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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Copyright (c) 2000-2001 Vojtech Pavlik
3 *
4 * Based on the work of:
5 * Hamish Macdonald
6 */
7
8/*
9 * Amiga keyboard driver for Linux/m68k
10 */
11
12/*
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 *
27 * Should you need to contact me, the author, you can do so either by
28 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
29 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
30 */
31
32#include <linux/module.h>
33#include <linux/init.h>
34#include <linux/input.h>
35#include <linux/delay.h>
36#include <linux/interrupt.h>
Roman Zippel5fa28ea2006-06-23 02:04:56 -070037#include <linux/keyboard.h>
Geert Uytterhoeven5121c712009-04-05 13:10:56 +020038#include <linux/platform_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
40#include <asm/amigaints.h>
41#include <asm/amigahw.h>
42#include <asm/irq.h>
43
44MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
45MODULE_DESCRIPTION("Amiga keyboard driver");
46MODULE_LICENSE("GPL");
47
Roman Zippel5fa28ea2006-06-23 02:04:56 -070048static unsigned char amikbd_keycode[0x78] __initdata = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 [0] = KEY_GRAVE,
50 [1] = KEY_1,
51 [2] = KEY_2,
52 [3] = KEY_3,
53 [4] = KEY_4,
54 [5] = KEY_5,
55 [6] = KEY_6,
56 [7] = KEY_7,
57 [8] = KEY_8,
58 [9] = KEY_9,
59 [10] = KEY_0,
60 [11] = KEY_MINUS,
61 [12] = KEY_EQUAL,
62 [13] = KEY_BACKSLASH,
63 [15] = KEY_KP0,
64 [16] = KEY_Q,
65 [17] = KEY_W,
66 [18] = KEY_E,
67 [19] = KEY_R,
68 [20] = KEY_T,
69 [21] = KEY_Y,
70 [22] = KEY_U,
71 [23] = KEY_I,
72 [24] = KEY_O,
73 [25] = KEY_P,
74 [26] = KEY_LEFTBRACE,
75 [27] = KEY_RIGHTBRACE,
76 [29] = KEY_KP1,
77 [30] = KEY_KP2,
78 [31] = KEY_KP3,
79 [32] = KEY_A,
80 [33] = KEY_S,
81 [34] = KEY_D,
82 [35] = KEY_F,
83 [36] = KEY_G,
84 [37] = KEY_H,
85 [38] = KEY_J,
86 [39] = KEY_K,
87 [40] = KEY_L,
88 [41] = KEY_SEMICOLON,
89 [42] = KEY_APOSTROPHE,
90 [43] = KEY_BACKSLASH,
91 [45] = KEY_KP4,
92 [46] = KEY_KP5,
93 [47] = KEY_KP6,
94 [48] = KEY_102ND,
95 [49] = KEY_Z,
96 [50] = KEY_X,
97 [51] = KEY_C,
98 [52] = KEY_V,
99 [53] = KEY_B,
100 [54] = KEY_N,
101 [55] = KEY_M,
102 [56] = KEY_COMMA,
103 [57] = KEY_DOT,
104 [58] = KEY_SLASH,
105 [60] = KEY_KPDOT,
106 [61] = KEY_KP7,
107 [62] = KEY_KP8,
108 [63] = KEY_KP9,
109 [64] = KEY_SPACE,
110 [65] = KEY_BACKSPACE,
111 [66] = KEY_TAB,
112 [67] = KEY_KPENTER,
113 [68] = KEY_ENTER,
114 [69] = KEY_ESC,
115 [70] = KEY_DELETE,
116 [74] = KEY_KPMINUS,
117 [76] = KEY_UP,
118 [77] = KEY_DOWN,
119 [78] = KEY_RIGHT,
120 [79] = KEY_LEFT,
121 [80] = KEY_F1,
122 [81] = KEY_F2,
123 [82] = KEY_F3,
124 [83] = KEY_F4,
125 [84] = KEY_F5,
126 [85] = KEY_F6,
127 [86] = KEY_F7,
128 [87] = KEY_F8,
129 [88] = KEY_F9,
130 [89] = KEY_F10,
131 [90] = KEY_KPLEFTPAREN,
132 [91] = KEY_KPRIGHTPAREN,
133 [92] = KEY_KPSLASH,
134 [93] = KEY_KPASTERISK,
135 [94] = KEY_KPPLUS,
136 [95] = KEY_HELP,
137 [96] = KEY_LEFTSHIFT,
138 [97] = KEY_RIGHTSHIFT,
139 [98] = KEY_CAPSLOCK,
140 [99] = KEY_LEFTCTRL,
141 [100] = KEY_LEFTALT,
142 [101] = KEY_RIGHTALT,
143 [102] = KEY_LEFTMETA,
144 [103] = KEY_RIGHTMETA
145};
146
147static const char *amikbd_messages[8] = {
148 [0] = KERN_ALERT "amikbd: Ctrl-Amiga-Amiga reset warning!!\n",
149 [1] = KERN_WARNING "amikbd: keyboard lost sync\n",
150 [2] = KERN_WARNING "amikbd: keyboard buffer overflow\n",
151 [3] = KERN_WARNING "amikbd: keyboard controller failure\n",
152 [4] = KERN_ERR "amikbd: keyboard selftest failure\n",
153 [5] = KERN_INFO "amikbd: initiate power-up key stream\n",
154 [6] = KERN_INFO "amikbd: terminate power-up key stream\n",
155 [7] = KERN_WARNING "amikbd: keyboard interrupt\n"
156};
157
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200158static irqreturn_t amikbd_interrupt(int irq, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159{
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200160 struct input_dev *dev = data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 unsigned char scancode, down;
162
163 scancode = ~ciaa.sdr; /* get and invert scancode (keyboard is active low) */
164 ciaa.cra |= 0x40; /* switch SP pin to output for handshake */
165 udelay(85); /* wait until 85 us have expired */
166 ciaa.cra &= ~0x40; /* switch CIA serial port to input mode */
167
168 down = !(scancode & 1); /* lowest bit is release bit */
169 scancode >>= 1;
170
171 if (scancode < 0x78) { /* scancodes < 0x78 are keys */
Roman Zippel5fa28ea2006-06-23 02:04:56 -0700172 if (scancode == 98) { /* CapsLock is a toggle switch key on Amiga */
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200173 input_report_key(dev, scancode, 1);
174 input_report_key(dev, scancode, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 } else {
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200176 input_report_key(dev, scancode, down);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 }
Dmitry Torokhov3c42f0c2005-09-15 02:01:45 -0500178
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200179 input_sync(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 } else /* scancodes >= 0x78 are error codes */
181 printk(amikbd_messages[scancode - 0x78]);
182
183 return IRQ_HANDLED;
184}
185
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200186static int __init amikbd_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187{
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200188 struct input_dev *dev;
Al Viro2bb71b52006-12-14 15:00:15 +0000189 int i, j, err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200191 dev = input_allocate_device();
192 if (!dev) {
193 dev_err(&pdev->dev, "Not enough memory for input device\n");
194 return -ENOMEM;
Dmitry Torokhov3c42f0c2005-09-15 02:01:45 -0500195 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200197 dev->name = pdev->name;
198 dev->phys = "amikbd/input0";
199 dev->id.bustype = BUS_AMIGA;
200 dev->id.vendor = 0x0001;
201 dev->id.product = 0x0001;
202 dev->id.version = 0x0100;
203 dev->dev.parent = &pdev->dev;
Dmitry Torokhov3c42f0c2005-09-15 02:01:45 -0500204
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200205 dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206
207 for (i = 0; i < 0x78; i++)
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200208 set_bit(i, dev->keybit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209
Roman Zippel5fa28ea2006-06-23 02:04:56 -0700210 for (i = 0; i < MAX_NR_KEYMAPS; i++) {
211 static u_short temp_map[NR_KEYS] __initdata;
212 if (!key_maps[i])
213 continue;
214 memset(temp_map, 0, sizeof(temp_map));
215 for (j = 0; j < 0x78; j++) {
216 if (!amikbd_keycode[j])
217 continue;
218 temp_map[j] = key_maps[i][amikbd_keycode[j]];
219 }
220 for (j = 0; j < NR_KEYS; j++) {
221 if (!temp_map[j])
222 temp_map[j] = 0xf200;
223 }
224 memcpy(key_maps[i], temp_map, sizeof(temp_map));
225 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 ciaa.cra &= ~0x41; /* serial data in, turn off TA */
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200227 err = request_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt, 0, "amikbd",
228 dev);
229 if (err)
Dmitry Torokhov2b03b602006-11-05 22:39:56 -0500230 goto fail2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200232 err = input_register_device(dev);
Dmitry Torokhov2b03b602006-11-05 22:39:56 -0500233 if (err)
234 goto fail3;
235
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200236 platform_set_drvdata(pdev, dev);
237
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 return 0;
Dmitry Torokhov2b03b602006-11-05 22:39:56 -0500239
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200240 fail3: free_irq(IRQ_AMIGA_CIAA_SP, dev);
241 fail2: input_free_device(dev);
Dmitry Torokhov2b03b602006-11-05 22:39:56 -0500242 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243}
244
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200245static int __exit amikbd_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246{
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200247 struct input_dev *dev = platform_get_drvdata(pdev);
248
249 platform_set_drvdata(pdev, NULL);
250 free_irq(IRQ_AMIGA_CIAA_SP, dev);
251 input_unregister_device(dev);
252 return 0;
253}
254
255static struct platform_driver amikbd_driver = {
256 .remove = __exit_p(amikbd_remove),
257 .driver = {
258 .name = "amiga-keyboard",
259 .owner = THIS_MODULE,
260 },
261};
262
263static int __init amikbd_init(void)
264{
265 return platform_driver_probe(&amikbd_driver, amikbd_probe);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266}
267
268module_init(amikbd_init);
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200269
270static void __exit amikbd_exit(void)
271{
272 platform_driver_unregister(&amikbd_driver);
273}
274
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275module_exit(amikbd_exit);
Geert Uytterhoeven5121c712009-04-05 13:10:56 +0200276
277MODULE_ALIAS("platform:amiga-keyboard");