1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * HID driver for TwinHan IR remote control
4 *
5 * Based on hid-gyration.c
6 *
7 * Copyright (c) 2009 Bruno Prémont <bonbons@linux-vserver.org>
8 */
9
10 /*
11 */
12
13 #include <linux/device.h>
14 #include <linux/input.h>
15 #include <linux/hid.h>
16 #include <linux/module.h>
17
18 #include "hid-ids.h"
19
20 /* Remote control key layout + listing:
21 *
22 * Full Screen Power
23 * KEY_SCREEN KEY_POWER2
24 *
25 * 1 2 3
26 * KEY_NUMERIC_1 KEY_NUMERIC_2 KEY_NUMERIC_3
27 *
28 * 4 5 6
29 * KEY_NUMERIC_4 KEY_NUMERIC_5 KEY_NUMERIC_6
30 *
31 * 7 8 9
32 * KEY_NUMERIC_7 KEY_NUMERIC_8 KEY_NUMERIC_9
33 *
34 * REC 0 Favorite
35 * KEY_RECORD KEY_NUMERIC_0 KEY_FAVORITES
36 *
37 * Rewind Forward
38 * KEY_REWIND CH+ KEY_FORWARD
39 * KEY_CHANNELUP
40 *
41 * VOL- > VOL+
42 * KEY_VOLUMEDOWN KEY_PLAY KEY_VOLUMEUP
43 *
44 * CH-
45 * KEY_CHANNELDOWN
46 * Recall Stop
47 * KEY_RESTART KEY_STOP
48 *
49 * Timeshift/Pause Mute Cancel
50 * KEY_PAUSE KEY_MUTE KEY_CANCEL
51 *
52 * Capture Preview EPG
53 * KEY_PRINT KEY_PROGRAM KEY_EPG
54 *
55 * Record List Tab Teletext
56 * KEY_LIST KEY_TAB KEY_TEXT
57 */
58
59 #define th_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
60 EV_KEY, (c))
twinhan_input_mapping(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)61 static int twinhan_input_mapping(struct hid_device *hdev, struct hid_input *hi,
62 struct hid_field *field, struct hid_usage *usage,
63 unsigned long **bit, int *max)
64 {
65 if ((usage->hid & HID_USAGE_PAGE) != HID_UP_KEYBOARD)
66 return 0;
67
68 switch (usage->hid & HID_USAGE) {
69 /* Map all keys from Twinhan Remote */
70 case 0x004: th_map_key_clear(KEY_TEXT); break;
71 case 0x006: th_map_key_clear(KEY_RESTART); break;
72 case 0x008: th_map_key_clear(KEY_EPG); break;
73 case 0x00c: th_map_key_clear(KEY_REWIND); break;
74 case 0x00e: th_map_key_clear(KEY_PROGRAM); break;
75 case 0x00f: th_map_key_clear(KEY_LIST); break;
76 case 0x010: th_map_key_clear(KEY_MUTE); break;
77 case 0x011: th_map_key_clear(KEY_FORWARD); break;
78 case 0x013: th_map_key_clear(KEY_PRINT); break;
79 case 0x017: th_map_key_clear(KEY_PAUSE); break;
80 case 0x019: th_map_key_clear(KEY_FAVORITES); break;
81 case 0x01d: th_map_key_clear(KEY_SCREEN); break;
82 case 0x01e: th_map_key_clear(KEY_NUMERIC_1); break;
83 case 0x01f: th_map_key_clear(KEY_NUMERIC_2); break;
84 case 0x020: th_map_key_clear(KEY_NUMERIC_3); break;
85 case 0x021: th_map_key_clear(KEY_NUMERIC_4); break;
86 case 0x022: th_map_key_clear(KEY_NUMERIC_5); break;
87 case 0x023: th_map_key_clear(KEY_NUMERIC_6); break;
88 case 0x024: th_map_key_clear(KEY_NUMERIC_7); break;
89 case 0x025: th_map_key_clear(KEY_NUMERIC_8); break;
90 case 0x026: th_map_key_clear(KEY_NUMERIC_9); break;
91 case 0x027: th_map_key_clear(KEY_NUMERIC_0); break;
92 case 0x028: th_map_key_clear(KEY_PLAY); break;
93 case 0x029: th_map_key_clear(KEY_CANCEL); break;
94 case 0x02b: th_map_key_clear(KEY_TAB); break;
95 /* Power = 0x0e0 + 0x0e1 + 0x0e2 + 0x03f */
96 case 0x03f: th_map_key_clear(KEY_POWER2); break;
97 case 0x04a: th_map_key_clear(KEY_RECORD); break;
98 case 0x04b: th_map_key_clear(KEY_CHANNELUP); break;
99 case 0x04d: th_map_key_clear(KEY_STOP); break;
100 case 0x04e: th_map_key_clear(KEY_CHANNELDOWN); break;
101 /* Volume down = 0x0e1 + 0x051 */
102 case 0x051: th_map_key_clear(KEY_VOLUMEDOWN); break;
103 /* Volume up = 0x0e1 + 0x052 */
104 case 0x052: th_map_key_clear(KEY_VOLUMEUP); break;
105 /* Kill the extra keys used for multi-key "power" and "volume" keys
106 * as well as continuously to release CTRL,ALT,META,... keys */
107 case 0x0e0:
108 case 0x0e1:
109 case 0x0e2:
110 case 0x0e3:
111 case 0x0e4:
112 case 0x0e5:
113 case 0x0e6:
114 case 0x0e7:
115 default:
116 return -1;
117 }
118 return 1;
119 }
120
121 static const struct hid_device_id twinhan_devices[] = {
122 { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
123 { }
124 };
125 MODULE_DEVICE_TABLE(hid, twinhan_devices);
126
127 static struct hid_driver twinhan_driver = {
128 .name = "twinhan",
129 .id_table = twinhan_devices,
130 .input_mapping = twinhan_input_mapping,
131 };
132 module_hid_driver(twinhan_driver);
133
134 MODULE_LICENSE("GPL");
135