1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  HID driver for some gyration "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) 2008 Jiri Slaby
9  *  Copyright (c) 2006-2008 Jiri Kosina
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 gy_map_key_clear(c)	hid_map_usage_clear(hi, usage, bit, max, \
23 					EV_KEY, (c))
gyration_input_mapping(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)24 static int gyration_input_mapping(struct hid_device *hdev, struct hid_input *hi,
25 		struct hid_field *field, struct hid_usage *usage,
26 		unsigned long **bit, int *max)
27 {
28 	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_LOGIVENDOR)
29 		return 0;
30 
31 	set_bit(EV_REP, hi->input->evbit);
32 	switch (usage->hid & HID_USAGE) {
33 	/* Reported on Gyration MCE Remote */
34 	case 0x00d: gy_map_key_clear(KEY_HOME);		break;
35 	case 0x024: gy_map_key_clear(KEY_DVD);		break;
36 	case 0x025: gy_map_key_clear(KEY_PVR);		break;
37 	case 0x046: gy_map_key_clear(KEY_MEDIA);	break;
38 	case 0x047: gy_map_key_clear(KEY_MP3);		break;
39 	case 0x048: gy_map_key_clear(KEY_MEDIA);	break;
40 	case 0x049: gy_map_key_clear(KEY_CAMERA);	break;
41 	case 0x04a: gy_map_key_clear(KEY_VIDEO);	break;
42 	case 0x05a: gy_map_key_clear(KEY_TEXT);		break;
43 	case 0x05b: gy_map_key_clear(KEY_RED);		break;
44 	case 0x05c: gy_map_key_clear(KEY_GREEN);	break;
45 	case 0x05d: gy_map_key_clear(KEY_YELLOW);	break;
46 	case 0x05e: gy_map_key_clear(KEY_BLUE);		break;
47 
48 	default:
49 		return 0;
50 	}
51 	return 1;
52 }
53 
gyration_event(struct hid_device * hdev,struct hid_field * field,struct hid_usage * usage,__s32 value)54 static int gyration_event(struct hid_device *hdev, struct hid_field *field,
55 		struct hid_usage *usage, __s32 value)
56 {
57 
58 	if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput)
59 		return 0;
60 
61 	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_GENDESK &&
62 			(usage->hid & 0xff) == 0x82) {
63 		struct input_dev *input = field->hidinput->input;
64 		input_event(input, usage->type, usage->code, 1);
65 		input_sync(input);
66 		input_event(input, usage->type, usage->code, 0);
67 		input_sync(input);
68 		return 1;
69 	}
70 
71 	return 0;
72 }
73 
74 static const struct hid_device_id gyration_devices[] = {
75 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
76 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
77 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
78 	{ }
79 };
80 MODULE_DEVICE_TABLE(hid, gyration_devices);
81 
82 static struct hid_driver gyration_driver = {
83 	.name = "gyration",
84 	.id_table = gyration_devices,
85 	.input_mapping = gyration_input_mapping,
86 	.event = gyration_event,
87 };
88 module_hid_driver(gyration_driver);
89 
90 MODULE_LICENSE("GPL");
91