summaryrefslogtreecommitdiffstats
path: root/drivers/input/mouse/maplemouse.c
blob: d196abfb68bcf258b318d7518e17f50bde52b13d (plain)
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
/*
 *	SEGA Dreamcast mouse driver
 *	Based on drivers/usb/usbmouse.c
 *
 *	Copyright Yaegashi Takeshi, 2001
 *	Adrian McMenamin, 2008
 */

#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>

MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");
MODULE_DESCRIPTION("SEGA Dreamcast mouse driver");
MODULE_LICENSE("GPL");

struct dc_mouse {
	struct input_dev *dev;
	struct maple_device *mdev;
};

static void dc_mouse_callback(struct mapleq *mq)
{
	int buttons, relx, rely, relz;
	struct maple_device *mapledev = mq->dev;
	struct dc_mouse *mse = maple_get_drvdata(mapledev);
	struct input_dev *dev = mse->dev;
	unsigned char *res = mq->recvbuf;

	buttons = ~res[8];
	relx = *(unsigned short *)(res + 12) - 512;
	rely = *(unsigned short *)(res + 14) - 512;
	relz = *(unsigned short *)(res + 16) - 512;

	input_report_key(dev, BTN_LEFT,   buttons & 4);
	input_report_key(dev, BTN_MIDDLE, buttons & 9);
	input_report_key(dev, BTN_RIGHT,  buttons & 2);
	input_report_rel(dev, REL_X,      relx);
	input_report_rel(dev, REL_Y,      rely);
	input_report_rel(dev, REL_WHEEL,  relz);
	input_sync(dev);
}

static int dc_mouse_open(struct input_dev *dev)
{
	struct dc_mouse *mse = dev->dev.platform_data;

	maple_getcond_callback(mse->mdev, dc_mouse_callback, HZ/50,
		MAPLE_FUNC_MOUSE);

	return 0;
}

static void dc_mouse_close(struct input_dev *dev)
{
	struct dc_mouse *mse = dev->dev.platform_data;

	maple_getcond_callback(mse->mdev, dc_mouse_callback, 0,
		MAPLE_FUNC_MOUSE);
}


static int __devinit probe_maple_mouse(struct device *dev)
{
	struct maple_device *mdev = to_maple_dev(dev);
	struct maple_driver *mdrv = to_maple_driver(dev->driver);
	struct input_dev *input_dev;
	struct dc_mouse *mse;
	int error;

	mse = kzalloc(sizeof(struct dc_mouse), GFP_KERNEL);
	input_dev = input_allocate_device();

	if (!mse || !input_dev) {
		error = -ENOMEM;
		goto fail;
	}

	mse->dev = input_dev;
	mse->mdev = mdev;

	input_set_drvdata(input_dev, mse);
	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
	input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
		BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
	input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) |
		BIT_MASK(REL_WHEEL);
	input_dev->name = mdev->product_name;
	input_dev->id.bustype = BUS_HOST;
	input_dev->open = dc_mouse_open;
	input_dev->close = dc_mouse_close;

	mdev->driver = mdrv;
	maple_set_drvdata(mdev, mse);

	error =	input_register_device(input_dev);
	if (error)
		goto fail;

	return 0;

fail:
	input_free_device(input_dev);
	maple_set_drvdata(mdev, NULL);
	kfree(mse);
	mdev->driver = NULL;
	return error;
}

static int __devexit remove_maple_mouse(struct device *dev)
{
	struct maple_device *mdev = to_maple_dev(dev);
	struct dc_mouse *mse = maple_get_drvdata(mdev);

	mdev->callback = NULL;
	input_unregister_device(mse->dev);
	maple_set_drvdata(mdev, NULL);
	kfree(mse);

	return 0;
}

static struct maple_driver dc_mouse_driver = {
	.function =	MAPLE_FUNC_MOUSE,
	.drv = {
		.name = "Dreamcast_mouse",
		.probe = probe_maple_mouse,
		.remove = __devexit_p(remove_maple_mouse),
	},
};

static int __init dc_mouse_init(void)
{
	return maple_driver_register(&dc_mouse_driver);
}

static void __exit dc_mouse_exit(void)
{
	maple_driver_unregister(&dc_mouse_driver);
}

module_init(dc_mouse_init);
module_exit(dc_mouse_exit);
OpenPOWER on IntegriCloud