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/*
25 */
26
27#include <linux/module.h>
28#include <linux/init.h>
29#include <linux/input.h>
30#include <linux/delay.h>
31#include <linux/interrupt.h>
32
33#include <asm/atariints.h>
34#include <asm/atarihw.h>
35#include <asm/atarikb.h>
36#include <asm/irq.h>
37
38MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");
39MODULE_DESCRIPTION("Atari keyboard driver");
40MODULE_LICENSE("GPL");
41
42/*
43 0x47: KP_7     71
44 0x48: KP_8     72
45 0x49: KP_9     73
46 0x62: KP_/     98
47 0x4b: KP_4     75
48 0x4c: KP_5     76
49 0x4d: KP_6     77
50 0x37: KP_*     55
51 0x4f: KP_1     79
52 0x50: KP_2     80
53 0x51: KP_3     81
54 0x4a: KP_-     74
55 0x52: KP_0     82
56 0x53: KP_.     83
57 0x4e: KP_+     78
58
59 0x67: Up       103
60 0x6c: Down     108
61 0x69: Left     105
62 0x6a: Right    106
63 */
64
65
66static unsigned char atakbd_keycode[0x73] = {	/* American layout */
67	[1]	 = KEY_ESC,
68	[2]	 = KEY_1,
69	[3]	 = KEY_2,
70	[4]	 = KEY_3,
71	[5]	 = KEY_4,
72	[6]	 = KEY_5,
73	[7]	 = KEY_6,
74	[8]	 = KEY_7,
75	[9]	 = KEY_8,
76	[10]	 = KEY_9,
77	[11]	 = KEY_0,
78	[12]	 = KEY_MINUS,
79	[13]	 = KEY_EQUAL,
80	[14]	 = KEY_BACKSPACE,
81	[15]	 = KEY_TAB,
82	[16]	 = KEY_Q,
83	[17]	 = KEY_W,
84	[18]	 = KEY_E,
85	[19]	 = KEY_R,
86	[20]	 = KEY_T,
87	[21]	 = KEY_Y,
88	[22]	 = KEY_U,
89	[23]	 = KEY_I,
90	[24]	 = KEY_O,
91	[25]	 = KEY_P,
92	[26]	 = KEY_LEFTBRACE,
93	[27]	 = KEY_RIGHTBRACE,
94	[28]	 = KEY_ENTER,
95	[29]	 = KEY_LEFTCTRL,
96	[30]	 = KEY_A,
97	[31]	 = KEY_S,
98	[32]	 = KEY_D,
99	[33]	 = KEY_F,
100	[34]	 = KEY_G,
101	[35]	 = KEY_H,
102	[36]	 = KEY_J,
103	[37]	 = KEY_K,
104	[38]	 = KEY_L,
105	[39]	 = KEY_SEMICOLON,
106	[40]	 = KEY_APOSTROPHE,
107	[41]	 = KEY_GRAVE,
108	[42]	 = KEY_LEFTSHIFT,
109	[43]	 = KEY_BACKSLASH,
110	[44]	 = KEY_Z,
111	[45]	 = KEY_X,
112	[46]	 = KEY_C,
113	[47]	 = KEY_V,
114	[48]	 = KEY_B,
115	[49]	 = KEY_N,
116	[50]	 = KEY_M,
117	[51]	 = KEY_COMMA,
118	[52]	 = KEY_DOT,
119	[53]	 = KEY_SLASH,
120	[54]	 = KEY_RIGHTSHIFT,
121	[55]	 = KEY_KPASTERISK,
122	[56]	 = KEY_LEFTALT,
123	[57]	 = KEY_SPACE,
124	[58]	 = KEY_CAPSLOCK,
125	[59]	 = KEY_F1,
126	[60]	 = KEY_F2,
127	[61]	 = KEY_F3,
128	[62]	 = KEY_F4,
129	[63]	 = KEY_F5,
130	[64]	 = KEY_F6,
131	[65]	 = KEY_F7,
132	[66]	 = KEY_F8,
133	[67]	 = KEY_F9,
134	[68]	 = KEY_F10,
135	[71]	 = KEY_HOME,
136	[72]	 = KEY_UP,
137	[74]	 = KEY_KPMINUS,
138	[75]	 = KEY_LEFT,
139	[77]	 = KEY_RIGHT,
140	[78]	 = KEY_KPPLUS,
141	[80]	 = KEY_DOWN,
142	[82]	 = KEY_INSERT,
143	[83]	 = KEY_DELETE,
144	[96]	 = KEY_102ND,
145	[97]	 = KEY_UNDO,
146	[98]	 = KEY_HELP,
147	[99]	 = KEY_KPLEFTPAREN,
148	[100]	 = KEY_KPRIGHTPAREN,
149	[101]	 = KEY_KPSLASH,
150	[102]	 = KEY_KPASTERISK,
151	[103]	 = KEY_KP7,
152	[104]	 = KEY_KP8,
153	[105]	 = KEY_KP9,
154	[106]	 = KEY_KP4,
155	[107]	 = KEY_KP5,
156	[108]	 = KEY_KP6,
157	[109]	 = KEY_KP1,
158	[110]	 = KEY_KP2,
159	[111]	 = KEY_KP3,
160	[112]	 = KEY_KP0,
161	[113]	 = KEY_KPDOT,
162	[114]	 = KEY_KPENTER,
163};
164
165static struct input_dev *atakbd_dev;
166
167static void atakbd_interrupt(unsigned char scancode, char down)
168{
169
170	if (scancode < 0x73) {		/* scancodes < 0xf3 are keys */
171
172		// report raw events here?
173
174		scancode = atakbd_keycode[scancode];
175
176		input_report_key(atakbd_dev, scancode, down);
177		input_sync(atakbd_dev);
178	} else				/* scancodes >= 0xf3 are mouse data, most likely */
179		printk(KERN_INFO "atakbd: unhandled scancode %x\n", scancode);
180
181	return;
182}
183
184static int __init atakbd_init(void)
185{
186	int i, error;
187
188	if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP))
189		return -ENODEV;
190
191	// need to init core driver if not already done so
192	error = atari_keyb_init();
193	if (error)
194		return error;
195
196	atakbd_dev = input_allocate_device();
197	if (!atakbd_dev)
198		return -ENOMEM;
199
200	atakbd_dev->name = "Atari Keyboard";
201	atakbd_dev->phys = "atakbd/input0";
202	atakbd_dev->id.bustype = BUS_HOST;
203	atakbd_dev->id.vendor = 0x0001;
204	atakbd_dev->id.product = 0x0001;
205	atakbd_dev->id.version = 0x0100;
206
207	atakbd_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
208	atakbd_dev->keycode = atakbd_keycode;
209	atakbd_dev->keycodesize = sizeof(unsigned char);
210	atakbd_dev->keycodemax = ARRAY_SIZE(atakbd_keycode);
211
212	for (i = 1; i < 0x72; i++) {
213		set_bit(atakbd_keycode[i], atakbd_dev->keybit);
214	}
215
216	/* error check */
217	error = input_register_device(atakbd_dev);
218	if (error) {
219		input_free_device(atakbd_dev);
220		return error;
221	}
222
223	atari_input_keyboard_interrupt_hook = atakbd_interrupt;
224
225	return 0;
226}
227
228static void __exit atakbd_exit(void)
229{
230	atari_input_keyboard_interrupt_hook = NULL;
231	input_unregister_device(atakbd_dev);
232}
233
234module_init(atakbd_init);
235module_exit(atakbd_exit);
236