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 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 * see Documentation/dvb/REDME.dvb-usb for more information
28 int dvb_usb_af9005_remote_debug;
29 module_param_named(debug, dvb_usb_af9005_remote_debug, int, 0644);
30 MODULE_PARM_DESC(debug,
31 "enable (1) or disable (0) debug messages."
32 DVB_USB_DEBUG_STATUS);
34 #define deb_decode(args...) dprintk(dvb_usb_af9005_remote_debug,0x01,args)
36 struct dvb_usb_rc_key af9005_rc_keys[] = {
38 {0x01, 0xb7, KEY_POWER},
39 {0x01, 0xa7, KEY_VOLUMEUP},
40 {0x01, 0x87, KEY_CHANNELUP},
41 {0x01, 0x7f, KEY_MUTE},
42 {0x01, 0xbf, KEY_VOLUMEDOWN},
43 {0x01, 0x3f, KEY_CHANNELDOWN},
53 {0x01, 0xcf, KEY_ZOOM},
55 {0x01, 0x8f, KEY_GOTO}, /* marked jump on the remote */
57 {0x00, 0xbd, KEY_POWER},
58 {0x00, 0x7d, KEY_VOLUMEUP},
59 {0x00, 0xfd, KEY_CHANNELUP},
60 {0x00, 0x9d, KEY_MUTE},
61 {0x00, 0x5d, KEY_VOLUMEDOWN},
62 {0x00, 0xdd, KEY_CHANNELDOWN},
72 {0x00, 0x95, KEY_ZOOM},
74 {0x00, 0xd5, KEY_GOTO}, /* marked jump on the remote */
77 int af9005_rc_keys_size = ARRAY_SIZE(af9005_rc_keys);
79 static int repeatable_keys[] = {
86 int af9005_rc_decode(struct dvb_usb_device *d, u8 * data, int len, u32 * event,
95 mark = (u16) (data[0] << 8) + data[1];
96 space = (u16) (data[2] << 8) + data[3];
97 if (space * 3 < mark) {
98 for (i = 0; i < ARRAY_SIZE(repeatable_keys); i++) {
99 if (d->last_event == repeatable_keys[i]) {
100 *state = REMOTE_KEY_REPEAT;
101 *event = d->last_event;
102 deb_decode("repeat key, event %x\n",
107 deb_decode("repeated key ignored (non repeatable)\n");
109 } else if (len >= 33 * 4) { /*32 bits + start code */
111 for (i = 4; i < 4 + 32 * 4; i += 4) {
113 mark = (u16) (data[i] << 8) + data[i + 1];
115 space = (u16) (data[i + 2] << 8) + data[i + 3];
117 if (mark * 2 > space)
120 deb_decode("key pressed, raw value %x\n", result);
121 if ((result & 0xff000000) != 0xfe000000) {
123 ("doesn't start with 0xfe, ignored\n");
126 cust = (result >> 16) & 0xff;
127 dat = (result >> 8) & 0xff;
128 invdat = (~result) & 0xff;
130 deb_decode("code != inverted code\n");
133 for (i = 0; i < af9005_rc_keys_size; i++) {
134 if (af9005_rc_keys[i].custom == cust
135 && af9005_rc_keys[i].data == dat) {
136 *event = af9005_rc_keys[i].event;
137 *state = REMOTE_KEY_PRESSED;
139 ("key pressed, event %x\n", *event);
143 deb_decode("not found in table\n");
149 EXPORT_SYMBOL(af9005_rc_keys);
150 EXPORT_SYMBOL(af9005_rc_keys_size);
151 EXPORT_SYMBOL(af9005_rc_decode);
153 MODULE_AUTHOR("Luca Olivetti <luca@ventoso.org>");
155 ("Standard remote control decoder for Afatech 9005 DVB-T USB1.1 stick");
156 MODULE_VERSION("1.0");
157 MODULE_LICENSE("GPL");