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19#include <linux/device.h>
20#include <linux/input.h>
21#include <linux/hid.h>
22#include <linux/module.h>
23
24#include "hid-ids.h"
25
26#define ez_map_rel(c) hid_map_usage(hi, usage, bit, max, EV_REL, (c))
27#define ez_map_key(c) hid_map_usage(hi, usage, bit, max, EV_KEY, (c))
28
29static int ez_input_mapping(struct hid_device *hdev, struct hid_input *hi,
30 struct hid_field *field, struct hid_usage *usage,
31 unsigned long **bit, int *max)
32{
33 if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
34 return 0;
35
36 switch (usage->hid & HID_USAGE) {
37 case 0x230: ez_map_key(BTN_MOUSE); break;
38 case 0x231: ez_map_rel(REL_WHEEL); break;
39
40
41
42
43
44 case 0x232: ez_map_rel(REL_HWHEEL); break;
45 default:
46 return 0;
47 }
48 return 1;
49}
50
51static int ez_event(struct hid_device *hdev, struct hid_field *field,
52 struct hid_usage *usage, __s32 value)
53{
54 if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
55 !usage->type)
56 return 0;
57
58
59 if (usage->type == EV_REL && usage->code == REL_HWHEEL) {
60 struct input_dev *input = field->hidinput->input;
61 input_event(input, usage->type, REL_WHEEL, -value);
62 return 1;
63 }
64
65 return 0;
66}
67
68static const struct hid_device_id ez_devices[] = {
69 { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
70 { }
71};
72MODULE_DEVICE_TABLE(hid, ez_devices);
73
74static struct hid_driver ez_driver = {
75 .name = "ezkey",
76 .id_table = ez_devices,
77 .input_mapping = ez_input_mapping,
78 .event = ez_event,
79};
80
81static int __init ez_init(void)
82{
83 return hid_register_driver(&ez_driver);
84}
85
86static void __exit ez_exit(void)
87{
88 hid_unregister_driver(&ez_driver);
89}
90
91module_init(ez_init);
92module_exit(ez_exit);
93MODULE_LICENSE("GPL");
94