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/* DVB USB compliant Linux driver for the Afatech 9005
* USB1.1 DVB-T receiver.
*
* Standard remote decode function
*
* Copyright (C) 2007 Luca Olivetti (luca@ventoso.org)
*
* Thanks to Afatech who kindly provided information.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* see Documentation/dvb/REDME.dvb-usb for more information
*/
#include "af9005.h"
/* debug */
static int dvb_usb_af9005_remote_debug;
module_param_named(debug, dvb_usb_af9005_remote_debug, int, 0644);
MODULE_PARM_DESC(debug,
"enable (1) or disable (0) debug messages."
DVB_USB_DEBUG_STATUS);
#define deb_decode(args...) dprintk(dvb_usb_af9005_remote_debug,0x01,args)
struct dvb_usb_rc_key af9005_rc_keys[] = {
{0x01, 0xb7, KEY_POWER},
{0x01, 0xa7, KEY_VOLUMEUP},
{0x01, 0x87, KEY_CHANNELUP},
{0x01, 0x7f, KEY_MUTE},
{0x01, 0xbf, KEY_VOLUMEDOWN},
{0x01, 0x3f, KEY_CHANNELDOWN},
{0x01, 0xdf, KEY_1},
{0x01, 0x5f, KEY_2},
{0x01, 0x9f, KEY_3},
{0x01, 0x1f, KEY_4},
{0x01, 0xef, KEY_5},
{0x01, 0x6f, KEY_6},
{0x01, 0xaf, KEY_7},
{0x01, 0x27, KEY_8},
{0x01, 0x07, KEY_9},
{0x01, 0xcf, KEY_ZOOM},
{0x01, 0x4f, KEY_0},
{0x01, 0x8f, KEY_GOTO}, /* marked jump on the remote */
{0x00, 0xbd, KEY_POWER},
{0x00, 0x7d, KEY_VOLUMEUP},
{0x00, 0xfd, KEY_CHANNELUP},
{0x00, 0x9d, KEY_MUTE},
{0x00, 0x5d, KEY_VOLUMEDOWN},
{0x00, 0xdd, KEY_CHANNELDOWN},
{0x00, 0xad, KEY_1},
{0x00, 0x6d, KEY_2},
{0x00, 0xed, KEY_3},
{0x00, 0x8d, KEY_4},
{0x00, 0x4d, KEY_5},
{0x00, 0xcd, KEY_6},
{0x00, 0xb5, KEY_7},
{0x00, 0x75, KEY_8},
{0x00, 0xf5, KEY_9},
{0x00, 0x95, KEY_ZOOM},
{0x00, 0x55, KEY_0},
{0x00, 0xd5, KEY_GOTO}, /* marked jump on the remote */
};
int af9005_rc_keys_size = ARRAY_SIZE(af9005_rc_keys);
static int repeatable_keys[] = {
KEY_VOLUMEUP,
KEY_VOLUMEDOWN,
KEY_CHANNELUP,
KEY_CHANNELDOWN
};
int af9005_rc_decode(struct dvb_usb_device *d, u8 * data, int len, u32 * event,
int *state)
{
u16 mark, space;
u32 result;
u8 cust, dat, invdat;
int i;
if (len >= 6) {
mark = (u16) (data[0] << 8) + data[1];
space = (u16) (data[2] << 8) + data[3];
if (space * 3 < mark) {
for (i = 0; i < ARRAY_SIZE(repeatable_keys); i++) {
if (d->last_event == repeatable_keys[i]) {
*state = REMOTE_KEY_REPEAT;
*event = d->last_event;
deb_decode("repeat key, event %x\n",
*event);
return 0;
}
}
deb_decode("repeated key ignored (non repeatable)\n");
return 0;
} else if (len >= 33 * 4) { /*32 bits + start code */
result = 0;
for (i = 4; i < 4 + 32 * 4; i += 4) {
result <<= 1;
mark = (u16) (data[i] << 8) + data[i + 1];
mark >>= 1;
space = (u16) (data[i + 2] << 8) + data[i + 3];
space >>= 1;
if (mark * 2 > space)
result += 1;
}
deb_decode("key pressed, raw value %x\n", result);
if ((result & 0xff000000) != 0xfe000000) {
deb_decode
("doesn't start with 0xfe, ignored\n");
return 0;
}
cust = (result >> 16) & 0xff;
dat = (result >> 8) & 0xff;
invdat = (~result) & 0xff;
if (dat != invdat) {
deb_decode("code != inverted code\n");
return 0;
}
for (i = 0; i < af9005_rc_keys_size; i++) {
if (af9005_rc_keys[i].custom == cust
&& af9005_rc_keys[i].data == dat) {
*event = af9005_rc_keys[i].event;
*state = REMOTE_KEY_PRESSED;
deb_decode
("key pressed, event %x\n", *event);
return 0;
}
}
deb_decode("not found in table\n");
}
}
return 0;
}
EXPORT_SYMBOL(af9005_rc_keys);
EXPORT_SYMBOL(af9005_rc_keys_size);
EXPORT_SYMBOL(af9005_rc_decode);
MODULE_AUTHOR("Luca Olivetti <luca@ventoso.org>");
MODULE_DESCRIPTION
("Standard remote control decoder for Afatech 9005 DVB-T USB1.1 stick");
MODULE_VERSION("1.0");
MODULE_LICENSE("GPL");
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