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/*
* dvb-dibusb-remote.c is part of the driver for mobile USB Budget DVB-T devices
* based on reference design made by DiBcom (http://www.dibcom.fr/)
*
* Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
*
* see dvb-dibusb-core.c for more copyright details.
*
* This file contains functions for handling the event device on the software
* side and the remote control on the hardware side.
*/
#include "dvb-dibusb.h"
/* Table to map raw key codes to key events. This should not be hard-wired
into the kernel. */
static const struct { u8 c0, c1, c2; uint32_t key; } rc_keys [] =
{
/* Key codes for the little Artec T1/Twinhan/HAMA/ remote. */
{ 0x00, 0xff, 0x16, KEY_POWER },
{ 0x00, 0xff, 0x10, KEY_MUTE },
{ 0x00, 0xff, 0x03, KEY_1 },
{ 0x00, 0xff, 0x01, KEY_2 },
{ 0x00, 0xff, 0x06, KEY_3 },
{ 0x00, 0xff, 0x09, KEY_4 },
{ 0x00, 0xff, 0x1d, KEY_5 },
{ 0x00, 0xff, 0x1f, KEY_6 },
{ 0x00, 0xff, 0x0d, KEY_7 },
{ 0x00, 0xff, 0x19, KEY_8 },
{ 0x00, 0xff, 0x1b, KEY_9 },
{ 0x00, 0xff, 0x15, KEY_0 },
{ 0x00, 0xff, 0x05, KEY_CHANNELUP },
{ 0x00, 0xff, 0x02, KEY_CHANNELDOWN },
{ 0x00, 0xff, 0x1e, KEY_VOLUMEUP },
{ 0x00, 0xff, 0x0a, KEY_VOLUMEDOWN },
{ 0x00, 0xff, 0x11, KEY_RECORD },
{ 0x00, 0xff, 0x17, KEY_FAVORITES }, /* Heart symbol - Channel list. */
{ 0x00, 0xff, 0x14, KEY_PLAY },
{ 0x00, 0xff, 0x1a, KEY_STOP },
{ 0x00, 0xff, 0x40, KEY_REWIND },
{ 0x00, 0xff, 0x12, KEY_FASTFORWARD },
{ 0x00, 0xff, 0x0e, KEY_PREVIOUS }, /* Recall - Previous channel. */
{ 0x00, 0xff, 0x4c, KEY_PAUSE },
{ 0x00, 0xff, 0x4d, KEY_SCREEN }, /* Full screen mode. */
{ 0x00, 0xff, 0x54, KEY_AUDIO }, /* MTS - Switch to secondary audio. */
/* additional keys TwinHan VisionPlus, the Artec seemingly not have */
{ 0x00, 0xff, 0x0c, KEY_CANCEL }, /* Cancel */
{ 0x00, 0xff, 0x1c, KEY_EPG }, /* EPG */
{ 0x00, 0xff, 0x00, KEY_TAB }, /* Tab */
{ 0x00, 0xff, 0x48, KEY_INFO }, /* Preview */
{ 0x00, 0xff, 0x04, KEY_LIST }, /* RecordList */
{ 0x00, 0xff, 0x0f, KEY_TEXT }, /* Teletext */
/* Key codes for the KWorld/ADSTech/JetWay remote. */
{ 0x86, 0x6b, 0x12, KEY_POWER },
{ 0x86, 0x6b, 0x0f, KEY_SELECT }, /* source */
{ 0x86, 0x6b, 0x0c, KEY_UNKNOWN }, /* scan */
{ 0x86, 0x6b, 0x0b, KEY_EPG },
{ 0x86, 0x6b, 0x10, KEY_MUTE },
{ 0x86, 0x6b, 0x01, KEY_1 },
{ 0x86, 0x6b, 0x02, KEY_2 },
{ 0x86, 0x6b, 0x03, KEY_3 },
{ 0x86, 0x6b, 0x04, KEY_4 },
{ 0x86, 0x6b, 0x05, KEY_5 },
{ 0x86, 0x6b, 0x06, KEY_6 },
{ 0x86, 0x6b, 0x07, KEY_7 },
{ 0x86, 0x6b, 0x08, KEY_8 },
{ 0x86, 0x6b, 0x09, KEY_9 },
{ 0x86, 0x6b, 0x0a, KEY_0 },
{ 0x86, 0x6b, 0x18, KEY_ZOOM },
{ 0x86, 0x6b, 0x1c, KEY_UNKNOWN }, /* preview */
{ 0x86, 0x6b, 0x13, KEY_UNKNOWN }, /* snap */
{ 0x86, 0x6b, 0x00, KEY_UNDO },
{ 0x86, 0x6b, 0x1d, KEY_RECORD },
{ 0x86, 0x6b, 0x0d, KEY_STOP },
{ 0x86, 0x6b, 0x0e, KEY_PAUSE },
{ 0x86, 0x6b, 0x16, KEY_PLAY },
{ 0x86, 0x6b, 0x11, KEY_BACK },
{ 0x86, 0x6b, 0x19, KEY_FORWARD },
{ 0x86, 0x6b, 0x14, KEY_UNKNOWN }, /* pip */
{ 0x86, 0x6b, 0x15, KEY_ESC },
{ 0x86, 0x6b, 0x1a, KEY_UP },
{ 0x86, 0x6b, 0x1e, KEY_DOWN },
{ 0x86, 0x6b, 0x1f, KEY_LEFT },
{ 0x86, 0x6b, 0x1b, KEY_RIGHT },
};
/*
* Read the remote control and feed the appropriate event.
* NEC protocol is used for remote controls
*/
static int dibusb_read_remote_control(struct usb_dibusb *dib)
{
u8 b[1] = { DIBUSB_REQ_POLL_REMOTE }, rb[5];
int ret;
int i;
if ((ret = dibusb_readwrite_usb(dib,b,1,rb,5)))
return ret;
switch (rb[0]) {
case DIBUSB_RC_NEC_KEY_PRESSED:
/* rb[1-3] is the actual key, rb[4] is a checksum */
deb_rc("raw key code 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
rb[1], rb[2], rb[3], rb[4]);
if ((0xff - rb[3]) != rb[4]) {
deb_rc("remote control checksum failed.\n");
break;
}
/* See if we can match the raw key code. */
for (i = 0; i < sizeof(rc_keys)/sizeof(rc_keys[0]); i++) {
if (rc_keys[i].c0 == rb[1] &&
rc_keys[i].c1 == rb[2] &&
rc_keys[i].c2 == rb[3]) {
dib->rc_input_event = rc_keys[i].key;
deb_rc("Translated key 0x%04x\n", dib->rc_input_event);
/* Signal down and up events for this key. */
input_report_key(&dib->rc_input_dev, dib->rc_input_event, 1);
input_report_key(&dib->rc_input_dev, dib->rc_input_event, 0);
input_sync(&dib->rc_input_dev);
break;
}
}
break;
case DIBUSB_RC_NEC_EMPTY: /* No (more) remote control keys. */
break;
case DIBUSB_RC_NEC_KEY_REPEATED:
/* rb[1]..rb[4] are always zero.*/
/* Repeats often seem to occur so for the moment just ignore this. */
deb_rc("Key repeat\n");
break;
default:
break;
}
return 0;
}
/* Remote-control poll function - called every dib->rc_query_interval ms to see
whether the remote control has received anything. */
static void dibusb_remote_query(void *data)
{
struct usb_dibusb *dib = (struct usb_dibusb *) data;
/* TODO: need a lock here. We can simply skip checking for the remote control
if we're busy. */
dibusb_read_remote_control(dib);
schedule_delayed_work(&dib->rc_query_work,
msecs_to_jiffies(rc_query_interval));
}
int dibusb_remote_init(struct usb_dibusb *dib)
{
int i;
/* Initialise the remote-control structures.*/
init_input_dev(&dib->rc_input_dev);
dib->rc_input_dev.evbit[0] = BIT(EV_KEY);
dib->rc_input_dev.keycodesize = sizeof(unsigned char);
dib->rc_input_dev.keycodemax = KEY_MAX;
dib->rc_input_dev.name = DRIVER_DESC " remote control";
for (i=0; i<sizeof(rc_keys)/sizeof(rc_keys[0]); i++)
set_bit(rc_keys[i].key, dib->rc_input_dev.keybit);
input_register_device(&dib->rc_input_dev);
dib->rc_input_event = KEY_MAX;
INIT_WORK(&dib->rc_query_work, dibusb_remote_query, dib);
/* Start the remote-control polling. */
if (rc_query_interval < 40)
rc_query_interval = 100; /* default */
info("schedule remote query interval to %d msecs.",rc_query_interval);
schedule_delayed_work(&dib->rc_query_work,msecs_to_jiffies(rc_query_interval));
dib->init_state |= DIBUSB_STATE_REMOTE;
return 0;
}
int dibusb_remote_exit(struct usb_dibusb *dib)
{
if (dib->init_state & DIBUSB_STATE_REMOTE) {
cancel_delayed_work(&dib->rc_query_work);
flush_scheduled_work();
input_unregister_device(&dib->rc_input_dev);
}
dib->init_state &= ~DIBUSB_STATE_REMOTE;
return 0;
}
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