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1 | /* |
2 | * SEGA Dreamcast mouse driver |
3 | * Based on drivers/usb/usbmouse.c |
4 | * |
5 | * Copyright (c) Yaegashi Takeshi, 2001 |
6 | * Copyright (c) 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 mouse driver"); |
19 | MODULE_LICENSE("GPL"); |
20 | |
21 | struct dc_mouse { |
22 | struct input_dev *dev; |
23 | struct maple_device *mdev; |
24 | }; |
25 | |
26 | static void dc_mouse_callback(struct mapleq *mq) |
27 | { |
28 | int buttons, relx, rely, relz; |
29 | struct maple_device *mapledev = mq->dev; |
30 | struct dc_mouse *mse = maple_get_drvdata(mapledev); |
31 | struct input_dev *dev = mse->dev; |
32 | unsigned char *res = mq->recvbuf->buf; |
33 | |
34 | buttons = ~res[8]; |
35 | relx = *(unsigned short *)(res + 12) - 512; |
36 | rely = *(unsigned short *)(res + 14) - 512; |
37 | relz = *(unsigned short *)(res + 16) - 512; |
38 | |
39 | input_report_key(dev, BTN_LEFT, buttons & 4); |
40 | input_report_key(dev, BTN_MIDDLE, buttons & 9); |
41 | input_report_key(dev, BTN_RIGHT, buttons & 2); |
42 | input_report_rel(dev, REL_X, relx); |
43 | input_report_rel(dev, REL_Y, rely); |
44 | input_report_rel(dev, REL_WHEEL, relz); |
45 | input_sync(dev); |
46 | } |
47 | |
48 | static int dc_mouse_open(struct input_dev *dev) |
49 | { |
50 | struct dc_mouse *mse = maple_get_drvdata(to_maple_dev(&dev->dev)); |
51 | |
52 | maple_getcond_callback(mse->mdev, dc_mouse_callback, HZ/50, |
53 | MAPLE_FUNC_MOUSE); |
54 | |
55 | return 0; |
56 | } |
57 | |
58 | static void dc_mouse_close(struct input_dev *dev) |
59 | { |
60 | struct dc_mouse *mse = maple_get_drvdata(to_maple_dev(&dev->dev)); |
61 | |
62 | maple_getcond_callback(mse->mdev, dc_mouse_callback, 0, |
63 | MAPLE_FUNC_MOUSE); |
64 | } |
65 | |
66 | /* allow the mouse to be used */ |
67 | static int probe_maple_mouse(struct device *dev) |
68 | { |
69 | struct maple_device *mdev = to_maple_dev(dev); |
70 | struct maple_driver *mdrv = to_maple_driver(dev->driver); |
71 | int error; |
72 | struct input_dev *input_dev; |
73 | struct dc_mouse *mse; |
74 | |
75 | mse = kzalloc(sizeof(struct dc_mouse), GFP_KERNEL); |
76 | if (!mse) { |
77 | error = -ENOMEM; |
78 | goto fail; |
79 | } |
80 | |
81 | input_dev = input_allocate_device(); |
82 | if (!input_dev) { |
83 | error = -ENOMEM; |
84 | goto fail_nomem; |
85 | } |
86 | |
87 | mse->dev = input_dev; |
88 | mse->mdev = mdev; |
89 | |
90 | input_set_drvdata(input_dev, mse); |
91 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
92 | input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | |
93 | BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE); |
94 | input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) | |
95 | BIT_MASK(REL_WHEEL); |
96 | input_dev->open = dc_mouse_open; |
97 | input_dev->close = dc_mouse_close; |
98 | input_dev->name = mdev->product_name; |
99 | input_dev->id.bustype = BUS_HOST; |
100 | error = input_register_device(input_dev); |
101 | if (error) |
102 | goto fail_register; |
103 | |
104 | mdev->driver = mdrv; |
105 | maple_set_drvdata(mdev, mse); |
106 | |
107 | return error; |
108 | |
109 | fail_register: |
110 | input_free_device(input_dev); |
111 | fail_nomem: |
112 | kfree(mse); |
113 | fail: |
114 | return error; |
115 | } |
116 | |
117 | static int remove_maple_mouse(struct device *dev) |
118 | { |
119 | struct maple_device *mdev = to_maple_dev(dev); |
120 | struct dc_mouse *mse = maple_get_drvdata(mdev); |
121 | |
122 | mdev->callback = NULL; |
123 | input_unregister_device(mse->dev); |
124 | maple_set_drvdata(mdev, NULL); |
125 | kfree(mse); |
126 | |
127 | return 0; |
128 | } |
129 | |
130 | static struct maple_driver dc_mouse_driver = { |
131 | .function = MAPLE_FUNC_MOUSE, |
132 | .drv = { |
133 | .name = "Dreamcast_mouse", |
134 | .probe = probe_maple_mouse, |
135 | .remove = remove_maple_mouse, |
136 | }, |
137 | }; |
138 | |
139 | static int __init dc_mouse_init(void) |
140 | { |
141 | return maple_driver_register(&dc_mouse_driver); |
142 | } |
143 | |
144 | static void __exit dc_mouse_exit(void) |
145 | { |
146 | maple_driver_unregister(&dc_mouse_driver); |
147 | } |
148 | |
149 | module_init(dc_mouse_init); |
150 | module_exit(dc_mouse_exit); |
151 |
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