drivers/hid/hid-twinhan.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * HID driver for TwinHan IR remote control
0004  *
0005  * Based on hid-gyration.c
0006  *
0007  * Copyright (c) 2009 Bruno Prémont <bonbons@linux-vserver.org>
0008  */
0009
0010 /*
0011  */
0012
0013 #include <linux/device.h>
0014 #include <linux/input.h>
0015 #include <linux/hid.h>
0016 #include <linux/module.h>
0017
0018 #include "hid-ids.h"
0019
0020 /*  Remote control key layout + listing:
0021  *
0022  *  Full Screen                              Power
0023  *  KEY_SCREEN                          KEY_POWER2
0024  *
0025  *  1                     2                      3
0026  *  KEY_NUMERIC_1   KEY_NUMERIC_2    KEY_NUMERIC_3
0027  *
0028  *  4                     5                      6
0029  *  KEY_NUMERIC_4   KEY_NUMERIC_5    KEY_NUMERIC_6
0030  *
0031  *  7                     8                      9
0032  *  KEY_NUMERIC_7   KEY_NUMERIC_8    KEY_NUMERIC_9
0033  *
0034  *  REC                   0               Favorite
0035  *  KEY_RECORD      KEY_NUMERIC_0    KEY_FAVORITES
0036  *
0037  *  Rewind                                 Forward
0038  *  KEY_REWIND           CH+           KEY_FORWARD
0039  *                 KEY_CHANNELUP
0040  *
0041  *  VOL-                  >                   VOL+
0042  *  KEY_VOLUMEDOWN    KEY_PLAY        KEY_VOLUMEUP
0043  *
0044  *                       CH-
0045  *                KEY_CHANNELDOWN
0046  *  Recall                                    Stop
0047  *  KEY_RESTART                           KEY_STOP
0048  *
0049  *  Timeshift/Pause     Mute                Cancel
0050  *  KEY_PAUSE         KEY_MUTE          KEY_CANCEL
0051  *
0052  *  Capture            Preview                 EPG
0053  *  KEY_PRINT        KEY_PROGRAM           KEY_EPG
0054  *
0055  *  Record List          Tab              Teletext
0056  *  KEY_LIST            KEY_TAB           KEY_TEXT
0057  */
0058
0059 #define th_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
0060                     EV_KEY, (c))
0061 static int twinhan_input_mapping(struct hid_device *hdev, struct hid_input *hi,
0062         struct hid_field *field, struct hid_usage *usage,
0063         unsigned long **bit, int *max)
0064 {
0065     if ((usage->hid & HID_USAGE_PAGE) != HID_UP_KEYBOARD)
0066         return 0;
0067
0068     switch (usage->hid & HID_USAGE) {
0069     /* Map all keys from Twinhan Remote */
0070     case 0x004: th_map_key_clear(KEY_TEXT);         break;
0071     case 0x006: th_map_key_clear(KEY_RESTART);      break;
0072     case 0x008: th_map_key_clear(KEY_EPG);          break;
0073     case 0x00c: th_map_key_clear(KEY_REWIND);       break;
0074     case 0x00e: th_map_key_clear(KEY_PROGRAM);      break;
0075     case 0x00f: th_map_key_clear(KEY_LIST);         break;
0076     case 0x010: th_map_key_clear(KEY_MUTE);         break;
0077     case 0x011: th_map_key_clear(KEY_FORWARD);      break;
0078     case 0x013: th_map_key_clear(KEY_PRINT);        break;
0079     case 0x017: th_map_key_clear(KEY_PAUSE);        break;
0080     case 0x019: th_map_key_clear(KEY_FAVORITES);    break;
0081     case 0x01d: th_map_key_clear(KEY_SCREEN);       break;
0082     case 0x01e: th_map_key_clear(KEY_NUMERIC_1);    break;
0083     case 0x01f: th_map_key_clear(KEY_NUMERIC_2);    break;
0084     case 0x020: th_map_key_clear(KEY_NUMERIC_3);    break;
0085     case 0x021: th_map_key_clear(KEY_NUMERIC_4);    break;
0086     case 0x022: th_map_key_clear(KEY_NUMERIC_5);    break;
0087     case 0x023: th_map_key_clear(KEY_NUMERIC_6);    break;
0088     case 0x024: th_map_key_clear(KEY_NUMERIC_7);    break;
0089     case 0x025: th_map_key_clear(KEY_NUMERIC_8);    break;
0090     case 0x026: th_map_key_clear(KEY_NUMERIC_9);    break;
0091     case 0x027: th_map_key_clear(KEY_NUMERIC_0);    break;
0092     case 0x028: th_map_key_clear(KEY_PLAY);         break;
0093     case 0x029: th_map_key_clear(KEY_CANCEL);       break;
0094     case 0x02b: th_map_key_clear(KEY_TAB);          break;
0095     /* Power       = 0x0e0 + 0x0e1 + 0x0e2 + 0x03f */
0096     case 0x03f: th_map_key_clear(KEY_POWER2);       break;
0097     case 0x04a: th_map_key_clear(KEY_RECORD);       break;
0098     case 0x04b: th_map_key_clear(KEY_CHANNELUP);    break;
0099     case 0x04d: th_map_key_clear(KEY_STOP);         break;
0100     case 0x04e: th_map_key_clear(KEY_CHANNELDOWN);  break;
0101     /* Volume down = 0x0e1 + 0x051                 */
0102     case 0x051: th_map_key_clear(KEY_VOLUMEDOWN);   break;
0103     /* Volume up   = 0x0e1 + 0x052                 */
0104     case 0x052: th_map_key_clear(KEY_VOLUMEUP);     break;
0105     /* Kill the extra keys used for multi-key "power" and "volume" keys
0106      * as well as continuously to release CTRL,ALT,META,... keys */
0107     case 0x0e0:
0108     case 0x0e1:
0109     case 0x0e2:
0110     case 0x0e3:
0111     case 0x0e4:
0112     case 0x0e5:
0113     case 0x0e6:
0114     case 0x0e7:
0115     default:
0116         return -1;
0117     }
0118     return 1;
0119 }
0120
0121 static const struct hid_device_id twinhan_devices[] = {
0122     { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
0123     { }
0124 };
0125 MODULE_DEVICE_TABLE(hid, twinhan_devices);
0126
0127 static struct hid_driver twinhan_driver = {
0128     .name = "twinhan",
0129     .id_table = twinhan_devices,
0130     .input_mapping = twinhan_input_mapping,
0131 };
0132 module_hid_driver(twinhan_driver);
0133
0134 MODULE_LICENSE("GPL");