drivers/hid/hid-twinhan.c

   1 /*
   2  * HID driver for TwinHan IR remote control
   3  *
   4  * Based on hid-gyration.c
   5  *
   6  * Copyright (c) 2009 Bruno Prémont <bonbons@linux-vserver.org>
   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");