1 /*
2 * $Id: maplemouse.c,v 1.2 2004/03/22 01:18:15 lethal Exp $
3 * SEGA Dreamcast mouse driver
4 * Based on drivers/usb/usbmouse.c
5 */
6
7 #include <linux/kernel.h>
8 #include <linux/slab.h>
9 #include <linux/input.h>
10 #include <linux/module.h>
11 #include <linux/init.h>
12 #include <linux/timer.h>
13 #include <linux/maple.h>
14
15 MODULE_AUTHOR("YAEGASHI Takeshi <t@keshi.org>");
16 MODULE_DESCRIPTION("SEGA Dreamcast mouse driver");
17
18 struct dc_mouse {
19 struct input_dev dev;
20 int open;
21 };
22
23
24 static void dc_mouse_callback(struct mapleq *mq)
25 {
26 int buttons, relx, rely, relz;
27 struct maple_device *mapledev = mq->dev;
28 struct dc_mouse *mouse = mapledev->private_data;
29 struct input_dev *dev = &mouse->dev;
30 unsigned char *res = mq->recvbuf;
31
32 buttons = ~res[8];
33 relx=*(unsigned short *)(res+12)-512;
34 rely=*(unsigned short *)(res+14)-512;
35 relz=*(unsigned short *)(res+16)-512;
36
37 input_report_key(dev, BTN_LEFT, buttons&4);
38 input_report_key(dev, BTN_MIDDLE, buttons&9);
39 input_report_key(dev, BTN_RIGHT, buttons&2);
40 input_report_rel(dev, REL_X, relx);
41 input_report_rel(dev, REL_Y, rely);
42 input_report_rel(dev, REL_WHEEL, relz);
43 input_sync(dev);
44 }
45
46
47 static int dc_mouse_open(struct input_dev *dev)
48 {
49 struct dc_mouse *mouse = dev->private;
50 mouse->open++;
51 return 0;
52 }
53
54
55 static void dc_mouse_close(struct input_dev *dev)
56 {
57 struct dc_mouse *mouse = dev->private;
58 mouse->open--;
59 }
60
61
62 static int dc_mouse_connect(struct maple_device *dev)
63 {
64 unsigned long data = be32_to_cpu(dev->devinfo.function_data[0]);
65 struct dc_mouse *mouse;
66
67 if (!(mouse = kmalloc(sizeof(struct dc_mouse), GFP_KERNEL)))
68 return -1;
69 memset(mouse, 0, sizeof(struct dc_mouse));
70
71 dev->private_data = mouse;
72
73 mouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
74 mouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
75 mouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL);
76
77 init_input_dev(&mouse->dev);
78
79 mouse->dev.private = mouse;
80 mouse->dev.open = dc_mouse_open;
81 mouse->dev.close = dc_mouse_close;
82 mouse->dev.event = NULL;
83
84 mouse->dev.name = dev->product_name;
85 mouse->dev.id.bustype = BUS_MAPLE;
86
87 input_register_device(&mouse->dev);
88
89 maple_getcond_callback(dev, dc_mouse_callback, 1, MAPLE_FUNC_MOUSE);
90
91 printk(KERN_INFO "input: mouse(0x%lx): %s\n", data, mouse->dev.name);
92
93 return 0;
94 }
95
96
97 static void dc_mouse_disconnect(struct maple_device *dev)
98 {
99 struct dc_mouse *mouse = dev->private_data;
100
101 input_unregister_device(&mouse->dev);
102 kfree(mouse);
103 }
104
105
106 static struct maple_driver dc_mouse_driver = {
107 .function = MAPLE_FUNC_MOUSE,
108 .name = "Dreamcast mouse",
109 .connect = dc_mouse_connect,
110 .disconnect = dc_mouse_disconnect,
111 };
112
113
114 static int __init dc_mouse_init(void)
115 {
116 maple_register_driver(&dc_mouse_driver);
117 return 0;
118 }
119
120
121 static void __exit dc_mouse_exit(void)
122 {
123 maple_unregister_driver(&dc_mouse_driver);
124 }
125
126
127 module_init(dc_mouse_init);
128 module_exit(dc_mouse_exit);
129
130 /*
131 * Local variables:
132 * c-basic-offset: 8
133 * End:
134 */
135
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