1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
/*
* SEGA Dreamcast keyboard driver
* Based on drivers/usb/usbkbd.c
* Copyright (c) YAEGASHI Takeshi, 2001
* Porting to 2.6 Copyright (c) Adrian McMenamin, 2007 - 2009
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see the file COPYING, or write
* to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/maple.h>
/* Very simple mutex to ensure proper cleanup */
static DEFINE_MUTEX(maple_keyb_mutex);
#define NR_SCANCODES 256
MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk");
MODULE_DESCRIPTION("SEGA Dreamcast keyboard driver");
MODULE_LICENSE("GPL");
struct dc_kbd {
struct input_dev *dev;
unsigned short keycode[NR_SCANCODES];
unsigned char new[8];
unsigned char old[8];
};
static const unsigned short dc_kbd_keycode[NR_SCANCODES] = {
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_A, KEY_B,
KEY_C, KEY_D, KEY_E, KEY_F, KEY_G, KEY_H, KEY_I, KEY_J, KEY_K, KEY_L,
KEY_M, KEY_N, KEY_O, KEY_P, KEY_Q, KEY_R, KEY_S, KEY_T, KEY_U, KEY_V,
KEY_W, KEY_X, KEY_Y, KEY_Z, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6,
KEY_7, KEY_8, KEY_9, KEY_0, KEY_ENTER, KEY_ESC, KEY_BACKSPACE,
KEY_TAB, KEY_SPACE, KEY_MINUS, KEY_EQUAL, KEY_LEFTBRACE,
KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_BACKSLASH, KEY_SEMICOLON,
KEY_APOSTROPHE, KEY_GRAVE, KEY_COMMA, KEY_DOT, KEY_SLASH,
KEY_CAPSLOCK, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6,
KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_F12, KEY_SYSRQ,
KEY_SCROLLLOCK, KEY_PAUSE, KEY_INSERT, KEY_HOME, KEY_PAGEUP,
KEY_DELETE, KEY_END, KEY_PAGEDOWN, KEY_RIGHT, KEY_LEFT, KEY_DOWN,
KEY_UP, KEY_NUMLOCK, KEY_KPSLASH, KEY_KPASTERISK, KEY_KPMINUS,
KEY_KPPLUS, KEY_KPENTER, KEY_KP1, KEY_KP2, KEY_KP3, KEY_KP4, KEY_KP5,
KEY_KP6, KEY_KP7, KEY_KP8, KEY_KP9, KEY_KP0, KEY_KPDOT, KEY_102ND,
KEY_COMPOSE, KEY_POWER, KEY_KPEQUAL, KEY_F13, KEY_F14, KEY_F15,
KEY_F16, KEY_F17, KEY_F18, KEY_F19, KEY_F20, KEY_F21, KEY_F22,
KEY_F23, KEY_F24, KEY_OPEN, KEY_HELP, KEY_PROPS, KEY_FRONT, KEY_STOP,
KEY_AGAIN, KEY_UNDO, KEY_CUT, KEY_COPY, KEY_PASTE, KEY_FIND, KEY_MUTE,
KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_KPCOMMA, KEY_RESERVED, KEY_RO, KEY_KATAKANAHIRAGANA , KEY_YEN,
KEY_HENKAN, KEY_MUHENKAN, KEY_KPJPCOMMA, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_HANGEUL, KEY_HANJA, KEY_KATAKANA, KEY_HIRAGANA,
KEY_ZENKAKUHANKAKU, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_LEFTCTRL, KEY_LEFTSHIFT, KEY_LEFTALT,
KEY_LEFTMETA, KEY_RIGHTCTRL, KEY_RIGHTSHIFT, KEY_RIGHTALT,
KEY_RIGHTMETA, KEY_PLAYPAUSE, KEY_STOPCD, KEY_PREVIOUSSONG,
KEY_NEXTSONG, KEY_EJECTCD, KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_MUTE,
KEY_WWW, KEY_BACK, KEY_FORWARD, KEY_STOP, KEY_FIND, KEY_SCROLLUP,
KEY_SCROLLDOWN, KEY_EDIT, KEY_SLEEP, KEY_SCREENLOCK, KEY_REFRESH,
KEY_CALC, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED
};
static void dc_scan_kbd(struct dc_kbd *kbd)
{
struct input_dev *dev = kbd->dev;
void *ptr;
int code, keycode;
int i;
for (i = 0; i < 8; i++) {
code = i + 224;
keycode = kbd->keycode[code];
input_event(dev, EV_MSC, MSC_SCAN, code);
input_report_key(dev, keycode, (kbd->new[0] >> i) & 1);
}
for (i = 2; i < 8; i++) {
ptr = memchr(kbd->new + 2, kbd->old[i], 6);
code = kbd->old[i];
if (code > 3 && ptr == NULL) {
keycode = kbd->keycode[code];
if (keycode) {
input_event(dev, EV_MSC, MSC_SCAN, code);
input_report_key(dev, keycode, 0);
} else
dev_dbg(&dev->dev,
"Unknown key (scancode %#x) released.",
code);
}
ptr = memchr(kbd->old + 2, kbd->new[i], 6);
code = kbd->new[i];
if (code > 3 && ptr) {
keycode = kbd->keycode[code];
if (keycode) {
input_event(dev, EV_MSC, MSC_SCAN, code);
input_report_key(dev, keycode, 1);
} else
dev_dbg(&dev->dev,
"Unknown key (scancode %#x) pressed.",
code);
}
}
input_sync(dev);
memcpy(kbd->old, kbd->new, 8);
}
static void dc_kbd_callback(struct mapleq *mq)
{
struct maple_device *mapledev = mq->dev;
struct dc_kbd *kbd = maple_get_drvdata(mapledev);
unsigned long *buf = (unsigned long *)(mq->recvbuf->buf);
/*
* We should always get the lock because the only
* time it may be locked is if the driver is in the cleanup phase.
*/
if (likely(mutex_trylock(&maple_keyb_mutex))) {
if (buf[1] == mapledev->function) {
memcpy(kbd->new, buf + 2, 8);
dc_scan_kbd(kbd);
}
mutex_unlock(&maple_keyb_mutex);
}
}
static int probe_maple_kbd(struct device *dev)
{
struct maple_device *mdev;
struct maple_driver *mdrv;
int i, error;
struct dc_kbd *kbd;
struct input_dev *idev;
mdev = to_maple_dev(dev);
mdrv = to_maple_driver(dev->driver);
kbd = kzalloc(sizeof(struct dc_kbd), GFP_KERNEL);
if (!kbd) {
error = -ENOMEM;
goto fail;
}
idev = input_allocate_device();
if (!idev) {
error = -ENOMEM;
goto fail_idev_alloc;
}
kbd->dev = idev;
memcpy(kbd->keycode, dc_kbd_keycode, sizeof(kbd->keycode));
idev->name = mdev->product_name;
idev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
idev->keycode = kbd->keycode;
idev->keycodesize = sizeof(unsigned short);
idev->keycodemax = ARRAY_SIZE(kbd->keycode);
idev->id.bustype = BUS_HOST;
idev->dev.parent = &mdev->dev;
for (i = 0; i < NR_SCANCODES; i++)
__set_bit(dc_kbd_keycode[i], idev->keybit);
__clear_bit(KEY_RESERVED, idev->keybit);
input_set_capability(idev, EV_MSC, MSC_SCAN);
error = input_register_device(idev);
if (error)
goto fail_register;
/* Maple polling is locked to VBLANK - which may be just 50/s */
maple_getcond_callback(mdev, dc_kbd_callback, HZ/50,
MAPLE_FUNC_KEYBOARD);
mdev->driver = mdrv;
maple_set_drvdata(mdev, kbd);
return error;
fail_register:
maple_set_drvdata(mdev, NULL);
input_free_device(idev);
fail_idev_alloc:
kfree(kbd);
fail:
return error;
}
static int remove_maple_kbd(struct device *dev)
{
struct maple_device *mdev = to_maple_dev(dev);
struct dc_kbd *kbd = maple_get_drvdata(mdev);
mutex_lock(&maple_keyb_mutex);
input_unregister_device(kbd->dev);
kfree(kbd);
maple_set_drvdata(mdev, NULL);
mutex_unlock(&maple_keyb_mutex);
return 0;
}
static struct maple_driver dc_kbd_driver = {
.function = MAPLE_FUNC_KEYBOARD,
.drv = {
.name = "Dreamcast_keyboard",
.probe = probe_maple_kbd,
.remove = remove_maple_kbd,
},
};
static int __init dc_kbd_init(void)
{
return maple_driver_register(&dc_kbd_driver);
}
static void __exit dc_kbd_exit(void)
{
maple_driver_unregister(&dc_kbd_driver);
}
module_init(dc_kbd_init);
module_exit(dc_kbd_exit);
|
