1 /* DVB USB compliant Linux driver for the Afatech 9005
2 * USB1.1 DVB-T receiver.
4 * Standard remote decode function
6 * Copyright (C) 2007 Luca Olivetti (luca@ventoso.org)
8 * Thanks to Afatech who kindly provided information.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * see Documentation/media/dvb-drivers/dvb-usb.rst for more information
24 static int dvb_usb_af9005_remote_debug;
25 module_param_named(debug, dvb_usb_af9005_remote_debug, int, 0644);
26 MODULE_PARM_DESC(debug,
27 "enable (1) or disable (0) debug messages."
28 DVB_USB_DEBUG_STATUS);
30 #define deb_decode(args...) dprintk(dvb_usb_af9005_remote_debug,0x01,args)
32 struct rc_map_table rc_map_af9005_table[] = {
35 {0x01a7, KEY_VOLUMEUP},
36 {0x0187, KEY_CHANNELUP},
38 {0x01bf, KEY_VOLUMEDOWN},
39 {0x013f, KEY_CHANNELDOWN},
51 {0x018f, KEY_GOTO}, /* marked jump on the remote */
54 {0x007d, KEY_VOLUMEUP},
55 {0x00fd, KEY_CHANNELUP},
57 {0x005d, KEY_VOLUMEDOWN},
58 {0x00dd, KEY_CHANNELDOWN},
70 {0x00d5, KEY_GOTO}, /* marked jump on the remote */
73 int rc_map_af9005_table_size = ARRAY_SIZE(rc_map_af9005_table);
75 static int repeatable_keys[] = {
82 int af9005_rc_decode(struct dvb_usb_device *d, u8 * data, int len, u32 * event,
91 mark = (u16) (data[0] << 8) + data[1];
92 space = (u16) (data[2] << 8) + data[3];
93 if (space * 3 < mark) {
94 for (i = 0; i < ARRAY_SIZE(repeatable_keys); i++) {
95 if (d->last_event == repeatable_keys[i]) {
96 *state = REMOTE_KEY_REPEAT;
97 *event = d->last_event;
98 deb_decode("repeat key, event %x\n",
103 deb_decode("repeated key ignored (non repeatable)\n");
105 } else if (len >= 33 * 4) { /*32 bits + start code */
107 for (i = 4; i < 4 + 32 * 4; i += 4) {
109 mark = (u16) (data[i] << 8) + data[i + 1];
111 space = (u16) (data[i + 2] << 8) + data[i + 3];
113 if (mark * 2 > space)
116 deb_decode("key pressed, raw value %x\n", result);
117 if ((result & 0xff000000) != 0xfe000000) {
119 ("doesn't start with 0xfe, ignored\n");
122 cust = (result >> 16) & 0xff;
123 dat = (result >> 8) & 0xff;
124 invdat = (~result) & 0xff;
126 deb_decode("code != inverted code\n");
129 for (i = 0; i < rc_map_af9005_table_size; i++) {
130 if (rc5_custom(&rc_map_af9005_table[i]) == cust
131 && rc5_data(&rc_map_af9005_table[i]) == dat) {
132 *event = rc_map_af9005_table[i].keycode;
133 *state = REMOTE_KEY_PRESSED;
135 ("key pressed, event %x\n", *event);
139 deb_decode("not found in table\n");
145 EXPORT_SYMBOL(rc_map_af9005_table);
146 EXPORT_SYMBOL(rc_map_af9005_table_size);
147 EXPORT_SYMBOL(af9005_rc_decode);
149 MODULE_AUTHOR("Luca Olivetti <luca@ventoso.org>");
151 ("Standard remote control decoder for Afatech 9005 DVB-T USB1.1 stick");
152 MODULE_VERSION("1.0");
153 MODULE_LICENSE("GPL");