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gerrit-public.fairphone.software / kernel / msm-4.19 / 40f4a6d522e68a0203ebefb57f3cbdac4a622169 / . / drivers / input / mouse / maplemouse.c
blob: d196abfb68bcf258b318d7518e17f50bde52b13d [file] [log] [blame]
Adrian McMenamin03dd5e12009-01-29 22:56:08 -0800[diff] [blame]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
17MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");
18MODULE_DESCRIPTION("SEGA Dreamcast mouse driver");
19MODULE_LICENSE("GPL");
20
21struct dc_mouse {
22 struct input_dev *dev;
23 struct maple_device *mdev;
24};
25
26static 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
48static 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
58static 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
67static 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
106fail:
107 input_free_device(input_dev);
108 maple_set_drvdata(mdev, NULL);
109 kfree(mse);
110 mdev->driver = NULL;
111 return error;
112}
113
114static 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
127static 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
136static int __init dc_mouse_init(void)
137{
138 return maple_driver_register(&dc_mouse_driver);
139}
140
141static void __exit dc_mouse_exit(void)
142{
143 maple_driver_unregister(&dc_mouse_driver);
144}
145
146module_init(dc_mouse_init);
147module_exit(dc_mouse_exit);