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Commit | Line | Data |
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03dd5e1b AM |
1 | /* |
2 | * SEGA Dreamcast mouse driver | |
3 | * Based on drivers/usb/usbmouse.c | |
4 | * | |
5 | * Copyright Yaegashi Takeshi, 2001 | |
6 | * Adrian McMenamin, 2008 | |
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; | |
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 = dev->dev.platform_data; | |
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 = dev->dev.platform_data; | |
61 | ||
62 | maple_getcond_callback(mse->mdev, dc_mouse_callback, 0, | |
63 | MAPLE_FUNC_MOUSE); | |
64 | } | |
65 | ||
66 | ||
67 | static int __devinit 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 | struct input_dev *input_dev; | |
72 | struct dc_mouse *mse; | |
73 | int error; | |
74 | ||
75 | mse = kzalloc(sizeof(struct dc_mouse), GFP_KERNEL); | |
76 | input_dev = input_allocate_device(); | |
77 | ||
78 | if (!mse || !input_dev) { | |
79 | error = -ENOMEM; | |
80 | goto fail; | |
81 | } | |
82 | ||
83 | mse->dev = input_dev; | |
84 | mse->mdev = mdev; | |
85 | ||
86 | input_set_drvdata(input_dev, mse); | |
87 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); | |
88 | input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | | |
89 | BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE); | |
90 | input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) | | |
91 | BIT_MASK(REL_WHEEL); | |
92 | input_dev->name = mdev->product_name; | |
93 | input_dev->id.bustype = BUS_HOST; | |
94 | input_dev->open = dc_mouse_open; | |
95 | input_dev->close = dc_mouse_close; | |
96 | ||
97 | mdev->driver = mdrv; | |
98 | maple_set_drvdata(mdev, mse); | |
99 | ||
100 | error = input_register_device(input_dev); | |
101 | if (error) | |
102 | goto fail; | |
103 | ||
104 | return 0; | |
105 | ||
106 | fail: | |
107 | input_free_device(input_dev); | |
108 | maple_set_drvdata(mdev, NULL); | |
109 | kfree(mse); | |
110 | mdev->driver = NULL; | |
111 | return error; | |
112 | } | |
113 | ||
114 | static int __devexit remove_maple_mouse(struct device *dev) | |
115 | { | |
116 | struct maple_device *mdev = to_maple_dev(dev); | |
117 | struct dc_mouse *mse = maple_get_drvdata(mdev); | |
118 | ||
119 | mdev->callback = NULL; | |
120 | input_unregister_device(mse->dev); | |
121 | maple_set_drvdata(mdev, NULL); | |
122 | kfree(mse); | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | static struct maple_driver dc_mouse_driver = { | |
128 | .function = MAPLE_FUNC_MOUSE, | |
129 | .drv = { | |
130 | .name = "Dreamcast_mouse", | |
131 | .probe = probe_maple_mouse, | |
132 | .remove = __devexit_p(remove_maple_mouse), | |
133 | }, | |
134 | }; | |
135 | ||
136 | static int __init dc_mouse_init(void) | |
137 | { | |
138 | return maple_driver_register(&dc_mouse_driver); | |
139 | } | |
140 | ||
141 | static void __exit dc_mouse_exit(void) | |
142 | { | |
143 | maple_driver_unregister(&dc_mouse_driver); | |
144 | } | |
145 | ||
146 | module_init(dc_mouse_init); | |
147 | module_exit(dc_mouse_exit); |