1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * atakbd.c |
4 | * |
5 | * Copyright (c) 2005 Michael Schmitz |
6 | * |
7 | * Based on amikbd.c, which is |
8 | * |
9 | * Copyright (c) 2000-2001 Vojtech Pavlik |
10 | * |
11 | * Based on the work of: |
12 | * Hamish Macdonald |
13 | */ |
14 | |
15 | /* |
16 | * Atari keyboard driver for Linux/m68k |
17 | * |
18 | * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c |
19 | * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard |
20 | * interrupt is shared with the MIDI ACIA so MIDI data also get handled there). |
21 | * This driver only deals with handing key events off to the input layer. |
22 | */ |
23 | |
24 | #include <linux/module.h> |
25 | #include <linux/init.h> |
26 | #include <linux/input.h> |
27 | #include <linux/delay.h> |
28 | #include <linux/interrupt.h> |
29 | |
30 | #include <asm/atariints.h> |
31 | #include <asm/atarihw.h> |
32 | #include <asm/atarikb.h> |
33 | #include <asm/irq.h> |
34 | |
35 | MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>" ); |
36 | MODULE_DESCRIPTION("Atari keyboard driver" ); |
37 | MODULE_LICENSE("GPL" ); |
38 | |
39 | /* |
40 | 0x47: KP_7 71 |
41 | 0x48: KP_8 72 |
42 | 0x49: KP_9 73 |
43 | 0x62: KP_/ 98 |
44 | 0x4b: KP_4 75 |
45 | 0x4c: KP_5 76 |
46 | 0x4d: KP_6 77 |
47 | 0x37: KP_* 55 |
48 | 0x4f: KP_1 79 |
49 | 0x50: KP_2 80 |
50 | 0x51: KP_3 81 |
51 | 0x4a: KP_- 74 |
52 | 0x52: KP_0 82 |
53 | 0x53: KP_. 83 |
54 | 0x4e: KP_+ 78 |
55 | |
56 | 0x67: Up 103 |
57 | 0x6c: Down 108 |
58 | 0x69: Left 105 |
59 | 0x6a: Right 106 |
60 | */ |
61 | |
62 | |
63 | static unsigned char atakbd_keycode[0x73] = { /* American layout */ |
64 | [1] = KEY_ESC, |
65 | [2] = KEY_1, |
66 | [3] = KEY_2, |
67 | [4] = KEY_3, |
68 | [5] = KEY_4, |
69 | [6] = KEY_5, |
70 | [7] = KEY_6, |
71 | [8] = KEY_7, |
72 | [9] = KEY_8, |
73 | [10] = KEY_9, |
74 | [11] = KEY_0, |
75 | [12] = KEY_MINUS, |
76 | [13] = KEY_EQUAL, |
77 | [14] = KEY_BACKSPACE, |
78 | [15] = KEY_TAB, |
79 | [16] = KEY_Q, |
80 | [17] = KEY_W, |
81 | [18] = KEY_E, |
82 | [19] = KEY_R, |
83 | [20] = KEY_T, |
84 | [21] = KEY_Y, |
85 | [22] = KEY_U, |
86 | [23] = KEY_I, |
87 | [24] = KEY_O, |
88 | [25] = KEY_P, |
89 | [26] = KEY_LEFTBRACE, |
90 | [27] = KEY_RIGHTBRACE, |
91 | [28] = KEY_ENTER, |
92 | [29] = KEY_LEFTCTRL, |
93 | [30] = KEY_A, |
94 | [31] = KEY_S, |
95 | [32] = KEY_D, |
96 | [33] = KEY_F, |
97 | [34] = KEY_G, |
98 | [35] = KEY_H, |
99 | [36] = KEY_J, |
100 | [37] = KEY_K, |
101 | [38] = KEY_L, |
102 | [39] = KEY_SEMICOLON, |
103 | [40] = KEY_APOSTROPHE, |
104 | [41] = KEY_GRAVE, |
105 | [42] = KEY_LEFTSHIFT, |
106 | [43] = KEY_BACKSLASH, |
107 | [44] = KEY_Z, |
108 | [45] = KEY_X, |
109 | [46] = KEY_C, |
110 | [47] = KEY_V, |
111 | [48] = KEY_B, |
112 | [49] = KEY_N, |
113 | [50] = KEY_M, |
114 | [51] = KEY_COMMA, |
115 | [52] = KEY_DOT, |
116 | [53] = KEY_SLASH, |
117 | [54] = KEY_RIGHTSHIFT, |
118 | [55] = KEY_KPASTERISK, |
119 | [56] = KEY_LEFTALT, |
120 | [57] = KEY_SPACE, |
121 | [58] = KEY_CAPSLOCK, |
122 | [59] = KEY_F1, |
123 | [60] = KEY_F2, |
124 | [61] = KEY_F3, |
125 | [62] = KEY_F4, |
126 | [63] = KEY_F5, |
127 | [64] = KEY_F6, |
128 | [65] = KEY_F7, |
129 | [66] = KEY_F8, |
130 | [67] = KEY_F9, |
131 | [68] = KEY_F10, |
132 | [71] = KEY_HOME, |
133 | [72] = KEY_UP, |
134 | [74] = KEY_KPMINUS, |
135 | [75] = KEY_LEFT, |
136 | [77] = KEY_RIGHT, |
137 | [78] = KEY_KPPLUS, |
138 | [80] = KEY_DOWN, |
139 | [82] = KEY_INSERT, |
140 | [83] = KEY_DELETE, |
141 | [96] = KEY_102ND, |
142 | [97] = KEY_UNDO, |
143 | [98] = KEY_HELP, |
144 | [99] = KEY_KPLEFTPAREN, |
145 | [100] = KEY_KPRIGHTPAREN, |
146 | [101] = KEY_KPSLASH, |
147 | [102] = KEY_KPASTERISK, |
148 | [103] = KEY_KP7, |
149 | [104] = KEY_KP8, |
150 | [105] = KEY_KP9, |
151 | [106] = KEY_KP4, |
152 | [107] = KEY_KP5, |
153 | [108] = KEY_KP6, |
154 | [109] = KEY_KP1, |
155 | [110] = KEY_KP2, |
156 | [111] = KEY_KP3, |
157 | [112] = KEY_KP0, |
158 | [113] = KEY_KPDOT, |
159 | [114] = KEY_KPENTER, |
160 | }; |
161 | |
162 | static struct input_dev *atakbd_dev; |
163 | |
164 | static void atakbd_interrupt(unsigned char scancode, char down) |
165 | { |
166 | |
167 | if (scancode < 0x73) { /* scancodes < 0xf3 are keys */ |
168 | |
169 | // report raw events here? |
170 | |
171 | scancode = atakbd_keycode[scancode]; |
172 | |
173 | input_report_key(dev: atakbd_dev, code: scancode, value: down); |
174 | input_sync(dev: atakbd_dev); |
175 | } else /* scancodes >= 0xf3 are mouse data, most likely */ |
176 | printk(KERN_INFO "atakbd: unhandled scancode %x\n" , scancode); |
177 | |
178 | return; |
179 | } |
180 | |
181 | static int __init atakbd_init(void) |
182 | { |
183 | int i, error; |
184 | |
185 | if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP)) |
186 | return -ENODEV; |
187 | |
188 | // need to init core driver if not already done so |
189 | error = atari_keyb_init(); |
190 | if (error) |
191 | return error; |
192 | |
193 | atakbd_dev = input_allocate_device(); |
194 | if (!atakbd_dev) |
195 | return -ENOMEM; |
196 | |
197 | atakbd_dev->name = "Atari Keyboard" ; |
198 | atakbd_dev->phys = "atakbd/input0" ; |
199 | atakbd_dev->id.bustype = BUS_HOST; |
200 | atakbd_dev->id.vendor = 0x0001; |
201 | atakbd_dev->id.product = 0x0001; |
202 | atakbd_dev->id.version = 0x0100; |
203 | |
204 | atakbd_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); |
205 | atakbd_dev->keycode = atakbd_keycode; |
206 | atakbd_dev->keycodesize = sizeof(unsigned char); |
207 | atakbd_dev->keycodemax = ARRAY_SIZE(atakbd_keycode); |
208 | |
209 | for (i = 1; i < 0x72; i++) { |
210 | set_bit(nr: atakbd_keycode[i], addr: atakbd_dev->keybit); |
211 | } |
212 | |
213 | /* error check */ |
214 | error = input_register_device(atakbd_dev); |
215 | if (error) { |
216 | input_free_device(dev: atakbd_dev); |
217 | return error; |
218 | } |
219 | |
220 | atari_input_keyboard_interrupt_hook = atakbd_interrupt; |
221 | |
222 | return 0; |
223 | } |
224 | |
225 | static void __exit atakbd_exit(void) |
226 | { |
227 | atari_input_keyboard_interrupt_hook = NULL; |
228 | input_unregister_device(atakbd_dev); |
229 | } |
230 | |
231 | module_init(atakbd_init); |
232 | module_exit(atakbd_exit); |
233 | |