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hid-twinhan.c
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1 /*
2  * HID driver for TwinHan IR remote control
3  *
4  * Based on hid-gyration.c
5  *
6  * Copyright (c) 2009 Bruno Prémont <[email protected]>
7  */
8 
9 /*
10  * This program is free software; you can redistribute it and/or modify it
11  * under the terms of the GNU General Public License as published by the Free
12  * Software Foundation; either version 2 of the License.
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 /* Remote control key layout + listing:
23  *
24  * Full Screen Power
25  * KEY_SCREEN KEY_POWER2
26  *
27  * 1 2 3
28  * KEY_NUMERIC_1 KEY_NUMERIC_2 KEY_NUMERIC_3
29  *
30  * 4 5 6
31  * KEY_NUMERIC_4 KEY_NUMERIC_5 KEY_NUMERIC_6
32  *
33  * 7 8 9
34  * KEY_NUMERIC_7 KEY_NUMERIC_8 KEY_NUMERIC_9
35  *
36  * REC 0 Favorite
37  * KEY_RECORD KEY_NUMERIC_0 KEY_FAVORITES
38  *
39  * Rewind Forward
40  * KEY_REWIND CH+ KEY_FORWARD
41  * KEY_CHANNELUP
42  *
43  * VOL- > VOL+
44  * KEY_VOLUMEDOWN KEY_PLAY KEY_VOLUMEUP
45  *
46  * CH-
47  * KEY_CHANNELDOWN
48  * Recall Stop
49  * KEY_RESTART KEY_STOP
50  *
51  * Timeshift/Pause Mute Cancel
52  * KEY_PAUSE KEY_MUTE KEY_CANCEL
53  *
54  * Capture Preview EPG
55  * KEY_PRINT KEY_PROGRAM KEY_EPG
56  *
57  * Record List Tab Teletext
58  * KEY_LIST KEY_TAB KEY_TEXT
59  */
60 
61 #define th_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
62  EV_KEY, (c))
63 static int twinhan_input_mapping(struct hid_device *hdev, struct hid_input *hi,
64  struct hid_field *field, struct hid_usage *usage,
65  unsigned long **bit, int *max)
66 {
67  if ((usage->hid & HID_USAGE_PAGE) != HID_UP_KEYBOARD)
68  return 0;
69 
70  switch (usage->hid & HID_USAGE) {
71  /* Map all keys from Twinhan Remote */
72  case 0x004: th_map_key_clear(KEY_TEXT); break;
73  case 0x006: th_map_key_clear(KEY_RESTART); break;
74  case 0x008: th_map_key_clear(KEY_EPG); break;
75  case 0x00c: th_map_key_clear(KEY_REWIND); break;
76  case 0x00e: th_map_key_clear(KEY_PROGRAM); break;
77  case 0x00f: th_map_key_clear(KEY_LIST); break;
78  case 0x010: th_map_key_clear(KEY_MUTE); break;
79  case 0x011: th_map_key_clear(KEY_FORWARD); break;
80  case 0x013: th_map_key_clear(KEY_PRINT); break;
81  case 0x017: th_map_key_clear(KEY_PAUSE); break;
82  case 0x019: th_map_key_clear(KEY_FAVORITES); break;
83  case 0x01d: th_map_key_clear(KEY_SCREEN); break;
84  case 0x01e: th_map_key_clear(KEY_NUMERIC_1); break;
85  case 0x01f: th_map_key_clear(KEY_NUMERIC_2); break;
86  case 0x020: th_map_key_clear(KEY_NUMERIC_3); break;
87  case 0x021: th_map_key_clear(KEY_NUMERIC_4); break;
88  case 0x022: th_map_key_clear(KEY_NUMERIC_5); break;
89  case 0x023: th_map_key_clear(KEY_NUMERIC_6); break;
90  case 0x024: th_map_key_clear(KEY_NUMERIC_7); break;
91  case 0x025: th_map_key_clear(KEY_NUMERIC_8); break;
92  case 0x026: th_map_key_clear(KEY_NUMERIC_9); break;
93  case 0x027: th_map_key_clear(KEY_NUMERIC_0); break;
94  case 0x028: th_map_key_clear(KEY_PLAY); break;
95  case 0x029: th_map_key_clear(KEY_CANCEL); break;
96  case 0x02b: th_map_key_clear(KEY_TAB); break;
97  /* Power = 0x0e0 + 0x0e1 + 0x0e2 + 0x03f */
98  case 0x03f: th_map_key_clear(KEY_POWER2); break;
99  case 0x04a: th_map_key_clear(KEY_RECORD); break;
100  case 0x04b: th_map_key_clear(KEY_CHANNELUP); break;
101  case 0x04d: th_map_key_clear(KEY_STOP); break;
102  case 0x04e: th_map_key_clear(KEY_CHANNELDOWN); break;
103  /* Volume down = 0x0e1 + 0x051 */
104  case 0x051: th_map_key_clear(KEY_VOLUMEDOWN); break;
105  /* Volume up = 0x0e1 + 0x052 */
106  case 0x052: th_map_key_clear(KEY_VOLUMEUP); break;
107  /* Kill the extra keys used for multi-key "power" and "volume" keys
108  * as well as continuously to release CTRL,ALT,META,... keys */
109  case 0x0e0:
110  case 0x0e1:
111  case 0x0e2:
112  case 0x0e3:
113  case 0x0e4:
114  case 0x0e5:
115  case 0x0e6:
116  case 0x0e7:
117  default:
118  return -1;
119  }
120  return 1;
121 }
122 
123 static const struct hid_device_id twinhan_devices[] = {
124  { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
125  { }
126 };
127 MODULE_DEVICE_TABLE(hid, twinhan_devices);
128 
129 static struct hid_driver twinhan_driver = {
130  .name = "twinhan",
131  .id_table = twinhan_devices,
132  .input_mapping = twinhan_input_mapping,
133 };
134 
135 static int __init twinhan_init(void)
136 {
137  return hid_register_driver(&twinhan_driver);
138 }
139 
140 static void __exit twinhan_exit(void)
141 {
142  hid_unregister_driver(&twinhan_driver);
143 }
144 
145 module_init(twinhan_init);
146 module_exit(twinhan_exit);
147 MODULE_LICENSE("GPL");
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