1 /*
2 * SEGA Dreamcast controller driver
3 * Based on drivers/usb/iforce.c
4 *
5 * Copyright Yaegashi Takeshi, 2001
6 * Adrian McMenamin, 2008 - 2009
7 */
8
9 #include <linux/kernel.h>
10 #include <linux/slab.h>
11 #include <linux/input.h>
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/timer.h>
15 #include <linux/maple.h>
16
17 MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");
18 MODULE_DESCRIPTION("SEGA Dreamcast controller driver");
19 MODULE_LICENSE("GPL");
20
21 struct dc_pad {
22 struct input_dev *dev;
23 struct maple_device *mdev;
24 };
25
26 static void dc_pad_callback(struct mapleq *mq)
27 {
28 unsigned short buttons;
29 struct maple_device *mapledev = mq->dev;
30 struct dc_pad *pad = maple_get_drvdata(mapledev);
31 struct input_dev *dev = pad->dev;
32 unsigned char *res = mq->recvbuf->buf;
33
34 buttons = ~le16_to_cpup((__le16 *)(res + 8));
35
36 input_report_abs(dev, ABS_HAT0Y,
37 (buttons & 0x0010 ? -1 : 0) + (buttons & 0x0020 ? 1 : 0));
38 input_report_abs(dev, ABS_HAT0X,
39 (buttons & 0x0040 ? -1 : 0) + (buttons & 0x0080 ? 1 : 0));
40 input_report_abs(dev, ABS_HAT1Y,
41 (buttons & 0x1000 ? -1 : 0) + (buttons & 0x2000 ? 1 : 0));
42 input_report_abs(dev, ABS_HAT1X,
43 (buttons & 0x4000 ? -1 : 0) + (buttons & 0x8000 ? 1 : 0));
44
45 input_report_key(dev, BTN_C, buttons & 0x0001);
46 input_report_key(dev, BTN_B, buttons & 0x0002);
47 input_report_key(dev, BTN_A, buttons & 0x0004);
48 input_report_key(dev, BTN_START, buttons & 0x0008);
49 input_report_key(dev, BTN_Z, buttons & 0x0100);
50 input_report_key(dev, BTN_Y, buttons & 0x0200);
51 input_report_key(dev, BTN_X, buttons & 0x0400);
52 input_report_key(dev, BTN_SELECT, buttons & 0x0800);
53
54 input_report_abs(dev, ABS_GAS, res[10]);
55 input_report_abs(dev, ABS_BRAKE, res[11]);
56 input_report_abs(dev, ABS_X, res[12]);
57 input_report_abs(dev, ABS_Y, res[13]);
58 input_report_abs(dev, ABS_RX, res[14]);
59 input_report_abs(dev, ABS_RY, res[15]);
60 }
61
62 static int dc_pad_open(struct input_dev *dev)
63 {
64 struct dc_pad *pad = dev->dev.platform_data;
65
66 maple_getcond_callback(pad->mdev, dc_pad_callback, HZ/20,
67 MAPLE_FUNC_CONTROLLER);
68
69 return 0;
70 }
71
72 static void dc_pad_close(struct input_dev *dev)
73 {
74 struct dc_pad *pad = dev->dev.platform_data;
75
76 maple_getcond_callback(pad->mdev, dc_pad_callback, 0,
77 MAPLE_FUNC_CONTROLLER);
78 }
79
80 /* allow the controller to be used */
81 static int __devinit probe_maple_controller(struct device *dev)
82 {
83 static const short btn_bit[32] = {
84 BTN_C, BTN_B, BTN_A, BTN_START, -1, -1, -1, -1,
85 BTN_Z, BTN_Y, BTN_X, BTN_SELECT, -1, -1, -1, -1,
86 -1, -1, -1, -1, -1, -1, -1, -1,
87 -1, -1, -1, -1, -1, -1, -1, -1,
88 };
89
90 static const short abs_bit[32] = {
91 -1, -1, -1, -1, ABS_HAT0Y, ABS_HAT0Y, ABS_HAT0X, ABS_HAT0X,
92 -1, -1, -1, -1, ABS_HAT1Y, ABS_HAT1Y, ABS_HAT1X, ABS_HAT1X,
93 ABS_GAS, ABS_BRAKE, ABS_X, ABS_Y, ABS_RX, ABS_RY, -1, -1,
94 -1, -1, -1, -1, -1, -1, -1, -1,
95 };
96
97 struct maple_device *mdev = to_maple_dev(dev);
98 struct maple_driver *mdrv = to_maple_driver(dev->driver);
99 int i, error;
100 struct dc_pad *pad;
101 struct input_dev *idev;
102 unsigned long data = be32_to_cpu(mdev->devinfo.function_data[0]);
103
104 pad = kzalloc(sizeof(struct dc_pad), GFP_KERNEL);
105 idev = input_allocate_device();
106 if (!pad || !idev) {
107 error = -ENOMEM;
108 goto fail;
109 }
110
111 pad->dev = idev;
112 pad->mdev = mdev;
113
114 idev->open = dc_pad_open;
115 idev->close = dc_pad_close;
116
117 for (i = 0; i < 32; i++) {
118 if (data & (1 << i)) {
119 if (btn_bit[i] >= 0)
120 __set_bit(btn_bit[i], idev->keybit);
121 else if (abs_bit[i] >= 0)
122 __set_bit(abs_bit[i], idev->absbit);
123 }
124 }
125
126 if (idev->keybit[BIT_WORD(BTN_JOYSTICK)])
127 idev->evbit[0] |= BIT_MASK(EV_KEY);
128
129 if (idev->absbit[0])
130 idev->evbit[0] |= BIT_MASK(EV_ABS);
131
132 for (i = ABS_X; i <= ABS_BRAKE; i++)
133 input_set_abs_params(idev, i, 0, 255, 0, 0);
134
135 for (i = ABS_HAT0X; i <= ABS_HAT3Y; i++)
136 input_set_abs_params(idev, i, 1, -1, 0, 0);
137
138 idev->dev.platform_data = pad;
139 idev->dev.parent = &mdev->dev;
140 idev->name = mdev->product_name;
141 idev->id.bustype = BUS_HOST;
142 input_set_drvdata(idev, pad);
143
144 error = input_register_device(idev);
145 if (error)
146 goto fail;
147
148 mdev->driver = mdrv;
149 maple_set_drvdata(mdev, pad);
150
151 return 0;
152
153 fail:
154 input_free_device(idev);
155 kfree(pad);
156 maple_set_drvdata(mdev, NULL);
157 return error;
158 }
159
160 static int __devexit remove_maple_controller(struct device *dev)
161 {
162 struct maple_device *mdev = to_maple_dev(dev);
163 struct dc_pad *pad = maple_get_drvdata(mdev);
164
165 mdev->callback = NULL;
166 input_unregister_device(pad->dev);
167 maple_set_drvdata(mdev, NULL);
168 kfree(pad);
169
170 return 0;
171 }
172
173 static struct maple_driver dc_pad_driver = {
174 .function = MAPLE_FUNC_CONTROLLER,
175 .drv = {
176 .name = "Dreamcast_controller",
177 .probe = probe_maple_controller,
178 .remove = __devexit_p(remove_maple_controller),
179 },
180 };
181
182 static int __init dc_pad_init(void)
183 {
184 return maple_driver_register(&dc_pad_driver);
185 }
186
187 static void __exit dc_pad_exit(void)
188 {
189 maple_driver_unregister(&dc_pad_driver);
190 }
191
192 module_init(dc_pad_init);
193 module_exit(dc_pad_exit);
194
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