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// SPDX-License-Identifier: GPL-2.0-or-later
/* 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.
*
* see Documentation/driver-api/media/drivers/dvb-usb.rst 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 rc_map_table rc_map_af9005_table[] = {
{0x01b7, KEY_POWER},
{0x01a7, KEY_VOLUMEUP},
{0x0187, KEY_CHANNELUP},
{0x017f, KEY_MUTE},
{0x01bf, KEY_VOLUMEDOWN},
{0x013f, KEY_CHANNELDOWN},
{0x01df, KEY_1},
{0x015f, KEY_2},
{0x019f, KEY_3},
{0x011f, KEY_4},
{0x01ef, KEY_5},
{0x016f, KEY_6},
{0x01af, KEY_7},
{0x0127, KEY_8},
{0x0107, KEY_9},
{0x01cf, KEY_ZOOM},
{0x014f, KEY_0},
{0x018f, KEY_GOTO}, /* marked jump on the remote */
{0x00bd, KEY_POWER},
{0x007d, KEY_VOLUMEUP},
{0x00fd, KEY_CHANNELUP},
{0x009d, KEY_MUTE},
{0x005d, KEY_VOLUMEDOWN},
{0x00dd, KEY_CHANNELDOWN},
{0x00ad, KEY_1},
{0x006d, KEY_2},
{0x00ed, KEY_3},
{0x008d, KEY_4},
{0x004d, KEY_5},
{0x00cd, KEY_6},
{0x00b5, KEY_7},
{0x0075, KEY_8},
{0x00f5, KEY_9},
{0x0095, KEY_ZOOM},
{0x0055, KEY_0},
{0x00d5, KEY_GOTO}, /* marked jump on the remote */
};
int rc_map_af9005_table_size = ARRAY_SIZE(rc_map_af9005_table);
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 < rc_map_af9005_table_size; i++) {
if (rc5_custom(&rc_map_af9005_table[i]) == cust
&& rc5_data(&rc_map_af9005_table[i]) == dat) {
*event = rc_map_af9005_table[i].keycode;
*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(rc_map_af9005_table);
EXPORT_SYMBOL(rc_map_af9005_table_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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