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Linux/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 module_hid_driver(twinhan_driver);
135 
136 MODULE_LICENSE("GPL");
137 

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