1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 *  HID driver for some ezkey "special" devices
 4 *
 5 *  Copyright (c) 1999 Andreas Gal
 6 *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
 7 *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
 8 *  Copyright (c) 2006-2007 Jiri Kosina
 
 9 *  Copyright (c) 2008 Jiri Slaby
10 */
11
12/*
 
 
 
 
13 */
14
15#include <linux/device.h>
16#include <linux/input.h>
17#include <linux/hid.h>
18#include <linux/module.h>
19
20#include "hid-ids.h"
21
22#define ez_map_rel(c)	hid_map_usage(hi, usage, bit, max, EV_REL, (c))
23#define ez_map_key(c)	hid_map_usage(hi, usage, bit, max, EV_KEY, (c))
24
25static int ez_input_mapping(struct hid_device *hdev, struct hid_input *hi,
26		struct hid_field *field, struct hid_usage *usage,
27		unsigned long **bit, int *max)
28{
29	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
30		return 0;
31
32	switch (usage->hid & HID_USAGE) {
33	case 0x230: ez_map_key(BTN_MOUSE);	break;
34	case 0x231: ez_map_rel(REL_WHEEL);	break;
35	/*
36	 * this keyboard has a scrollwheel implemented in
37	 * totally broken way. We map this usage temporarily
38	 * to HWHEEL and handle it in the event quirk handler
39	 */
40	case 0x232: ez_map_rel(REL_HWHEEL);	break;
41	default:
42		return 0;
43	}
44	return 1;
45}
46
47static int ez_event(struct hid_device *hdev, struct hid_field *field,
48		struct hid_usage *usage, __s32 value)
49{
50	if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
51			!usage->type)
52		return 0;
53
54	/* handle the temporary quirky mapping to HWHEEL */
55	if (usage->type == EV_REL && usage->code == REL_HWHEEL) {
56		struct input_dev *input = field->hidinput->input;
57		input_event(input, usage->type, REL_WHEEL, -value);
58		return 1;
59	}
60
61	return 0;
62}
63
64static const struct hid_device_id ez_devices[] = {
65	{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
66	{ }
67};
68MODULE_DEVICE_TABLE(hid, ez_devices);
69
70static struct hid_driver ez_driver = {
71	.name = "ezkey",
72	.id_table = ez_devices,
73	.input_mapping = ez_input_mapping,
74	.event = ez_event,
75};
76module_hid_driver(ez_driver);
77
 
 
 
 
 
 
 
 
 
 
 
 
78MODULE_LICENSE("GPL");

 
 1/*
 2 *  HID driver for some ezkey "special" devices
 3 *
 4 *  Copyright (c) 1999 Andreas Gal
 5 *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
 6 *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
 7 *  Copyright (c) 2006-2007 Jiri Kosina
 8 *  Copyright (c) 2007 Paul Walmsley
 9 *  Copyright (c) 2008 Jiri Slaby
10 */
11
12/*
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the Free
15 * Software Foundation; either version 2 of the License, or (at your option)
16 * any later version.
17 */
18
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	 * this keyboard has a scrollwheel implemented in
41	 * totally broken way. We map this usage temporarily
42	 * to HWHEEL and handle it in the event quirk handler
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	/* handle the temporary quirky mapping to HWHEEL */
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");