summaryrefslogtreecommitdiffstats
path: root/drivers/input/joystick/maplecontrol.c
blob: 8aa6e4c497da77c70df1827934b696c2bc4c0159 (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
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
/*
 *	SEGA Dreamcast controller driver
 *	Based on drivers/usb/iforce.c
 *
 *	Copyright Yaegashi Takeshi, 2001
 *	Adrian McMenamin, 2008 - 2009
 */

#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 controller driver");
MODULE_LICENSE("GPL");

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

static void dc_pad_callback(struct mapleq *mq)
{
	unsigned short buttons;
	struct maple_device *mapledev = mq->dev;
	struct dc_pad *pad = maple_get_drvdata(mapledev);
	struct input_dev *dev = pad->dev;
	unsigned char *res = mq->recvbuf->buf;

	buttons = ~le16_to_cpup((__le16 *)(res + 8));

	input_report_abs(dev, ABS_HAT0Y,
		(buttons & 0x0010 ? -1 : 0) + (buttons & 0x0020 ? 1 : 0));
	input_report_abs(dev, ABS_HAT0X,
		(buttons & 0x0040 ? -1 : 0) + (buttons & 0x0080 ? 1 : 0));
	input_report_abs(dev, ABS_HAT1Y,
		(buttons & 0x1000 ? -1 : 0) + (buttons & 0x2000 ? 1 : 0));
	input_report_abs(dev, ABS_HAT1X,
		(buttons & 0x4000 ? -1 : 0) + (buttons & 0x8000 ? 1 : 0));

	input_report_key(dev, BTN_C,      buttons & 0x0001);
	input_report_key(dev, BTN_B,      buttons & 0x0002);
	input_report_key(dev, BTN_A,      buttons & 0x0004);
	input_report_key(dev, BTN_START,  buttons & 0x0008);
	input_report_key(dev, BTN_Z,      buttons & 0x0100);
	input_report_key(dev, BTN_Y,      buttons & 0x0200);
	input_report_key(dev, BTN_X,      buttons & 0x0400);
	input_report_key(dev, BTN_SELECT, buttons & 0x0800);

	input_report_abs(dev, ABS_GAS,    res[10]);
	input_report_abs(dev, ABS_BRAKE,  res[11]);
	input_report_abs(dev, ABS_X,      res[12]);
	input_report_abs(dev, ABS_Y,      res[13]);
	input_report_abs(dev, ABS_RX,     res[14]);
	input_report_abs(dev, ABS_RY,     res[15]);
}

static int dc_pad_open(struct input_dev *dev)
{
	struct dc_pad *pad = dev_get_platdata(&dev->dev);

	maple_getcond_callback(pad->mdev, dc_pad_callback, HZ/20,
		MAPLE_FUNC_CONTROLLER);

	return 0;
}

static void dc_pad_close(struct input_dev *dev)
{
	struct dc_pad *pad = dev_get_platdata(&dev->dev);

	maple_getcond_callback(pad->mdev, dc_pad_callback, 0,
		MAPLE_FUNC_CONTROLLER);
}

/* allow the controller to be used */
static int probe_maple_controller(struct device *dev)
{
	static const short btn_bit[32] = {
		BTN_C, BTN_B, BTN_A, BTN_START, -1, -1, -1, -1,
		BTN_Z, BTN_Y, BTN_X, BTN_SELECT, -1, -1, -1, -1,
		-1, -1, -1, -1, -1, -1, -1, -1,
		-1, -1, -1, -1, -1, -1, -1, -1,
	};

	static const short abs_bit[32] = {
		-1, -1, -1, -1, ABS_HAT0Y, ABS_HAT0Y, ABS_HAT0X, ABS_HAT0X,
		-1, -1, -1, -1, ABS_HAT1Y, ABS_HAT1Y, ABS_HAT1X, ABS_HAT1X,
		ABS_GAS, ABS_BRAKE, ABS_X, ABS_Y, ABS_RX, ABS_RY, -1, -1,
		-1, -1, -1, -1, -1, -1, -1, -1,
	};

	struct maple_device *mdev = to_maple_dev(dev);
	struct maple_driver *mdrv = to_maple_driver(dev->driver);
	int i, error;
	struct dc_pad *pad;
	struct input_dev *idev;
	unsigned long data = be32_to_cpu(mdev->devinfo.function_data[0]);

	pad = kzalloc(sizeof(struct dc_pad), GFP_KERNEL);
	idev = input_allocate_device();
	if (!pad || !idev) {
		error = -ENOMEM;
		goto fail;
	}

	pad->dev = idev;
	pad->mdev = mdev;

	idev->open = dc_pad_open;
	idev->close = dc_pad_close;

	for (i = 0; i < 32; i++) {
		if (data & (1 << i)) {
			if (btn_bit[i] >= 0)
				__set_bit(btn_bit[i], idev->keybit);
			else if (abs_bit[i] >= 0)
				__set_bit(abs_bit[i], idev->absbit);
		}
	}

	if (idev->keybit[BIT_WORD(BTN_JOYSTICK)])
		idev->evbit[0] |= BIT_MASK(EV_KEY);

	if (idev->absbit[0])
		idev->evbit[0] |= BIT_MASK(EV_ABS);

	for (i = ABS_X; i <= ABS_BRAKE; i++)
		input_set_abs_params(idev, i, 0, 255, 0, 0);

	for (i = ABS_HAT0X; i <= ABS_HAT3Y; i++)
		input_set_abs_params(idev, i, 1, -1, 0, 0);

	idev->dev.platform_data = pad;
	idev->dev.parent = &mdev->dev;
	idev->name = mdev->product_name;
	idev->id.bustype = BUS_HOST;
	input_set_drvdata(idev, pad);

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

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

	return 0;

fail:
	input_free_device(idev);
	kfree(pad);
	maple_set_drvdata(mdev, NULL);
	return error;
}

static int remove_maple_controller(struct device *dev)
{
	struct maple_device *mdev = to_maple_dev(dev);
	struct dc_pad *pad = maple_get_drvdata(mdev);

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

	return 0;
}

static struct maple_driver dc_pad_driver = {
	.function =	MAPLE_FUNC_CONTROLLER,
	.drv = {
		.name	= "Dreamcast_controller",
		.probe	= probe_maple_controller,
		.remove	= remove_maple_controller,
	},
};

static int __init dc_pad_init(void)
{
	return maple_driver_register(&dc_pad_driver);
}

static void __exit dc_pad_exit(void)
{
	maple_driver_unregister(&dc_pad_driver);
}

module_init(dc_pad_init);
module_exit(dc_pad_exit);