On Wednesday 10 August 2005 20:31, Meyland, Peter wrote:
> Hi all
> Is there anybody who has a working .lircrc file for mythtv?
> I'm using lirc with iMon driver and lircd.conf file created by Venky Raju
> for a iMON PAD remote control
> TIA
> Peter

i have one for a modified (by me) lirc_imon driver
this is for the integrated imon in a silverstone 10M case
files attached
the lirc_imon.c is modified from that provided by 
http://venky.ws/projects/imon/
it makes the pad modal so that it can either be up/down/left/right or a mouse

it probably could do with some more work -but i use it as-is

hope this helps
-- 
simon
/*
 *   lirc_imon.c:  LIRC plugin/VFD driver for Ahanix/Soundgraph IMON IR/VFD
 *
 *   $Id: lirc_imon.c,v 1.6 2005/04/16 18:10:02 venkyr Exp $
 *
 *   Version 0.3 
 *   		Supports newer iMON models that send decoded IR signals.
 *   			This includes the iMON PAD model.
 *   		Removed module option for vfd_proto_6p. This driver supports
 *   			multiple iMON devices so it is meaningless to have
 *   			a global option to set protocol variants.
 *
 *   Version 0.2 beta 2 [January 31, 2005]
 *		USB disconnect/reconnect no longer causes problems for lircd
 *   
 *   Version 0.2 beta 1 [January 29, 2005]
 *		Added support for original iMON receiver (ext USB)
 *   
 *   Version 0.2 alpha 2 [January 24, 2005]
 *   		Added support for VFDs with 6-packet protocol
 *
 *   Version 0.2 alpha 1 [January 23, 2005]
 *   		Added support for 2.6 kernels
 *   		Reworked disconnect handling
 *   		Incorporated Changwoo Ryu's algorithm
 *
 *   Version 0.1 alpha 1 [July 5, 2004]
 *
 *   Copyright (C) 2004  Venky Raju ([EMAIL PROTECTED])
 *   
 *   lirc_imon 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.
 *
 */
#include <linux/version.h>

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,22)
#error "*** Sorry, this driver requires kernel version 2.4.22 or higher"
#endif

#include <linux/config.h>

#include <linux/errno.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <asm/uaccess.h>
#include <linux/usb.h>
#include <linux/devfs_fs_kernel.h>

#include "drivers/lirc.h"
#include "drivers/kcompat.h"
#include "drivers/lirc_dev/lirc_dev.h"


#define MOD_AUTHOR	"Venky Raju <[EMAIL PROTECTED]>"
#define MOD_DESC	"Driver for Soundgraph iMON MultiMedian IR/VFD"
#define MOD_NAME	"lirc_imon"
#define MOD_VERSION	"0.3S"

#define VFD_MINOR_BASE	144	/* Same as LCD */
#define DEVFS_MODE	S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH
#define DEVFS_NAME	"usb/lcd%d"

#define BUF_CHUNK_SIZE	4
#define BUF_SIZE	128

#define BIT_DURATION	250 	/* each bit received is 250us */

#define SUCCESS		0
#define	TRUE		1
#define FALSE		0

#define CURSOR_LIMIT	2


/* ------------------------------------------------------------
 *                     P R O T O T Y P E S
 * ------------------------------------------------------------
 */

/* USB Callback prototypes */
#ifdef KERNEL_2_5
static int imon_probe (struct usb_interface *interface,
			const struct usb_device_id *id);
static void imon_disconnect (struct usb_interface *interface);
static void usb_rx_callback (struct urb *urb, struct pt_regs *regs);
static void usb_tx_callback (struct urb *urb, struct pt_regs *regs);
#else
static void * imon_probe (struct usb_device * dev, unsigned int intf,
				const struct usb_device_id *id);
static void imon_disconnect (struct usb_device *dev, void *data);
static void usb_rx_callback (struct urb *urb);
static void usb_tx_callback (struct urb *urb);
#endif

/* VFD file_operations function prototypes */
static int vfd_open (struct inode *inode, struct file *file);
static int vfd_close (struct inode *inode, struct file *file);
static ssize_t vfd_write (struct file *file, const char *buf,
				size_t n_bytes, loff_t *pos);

/* LIRC plugin function prototypes */
static int ir_open (void *data);
static void ir_close (void *data);

/* Driver init/exit prototypes */
static int __init imon_init (void);
static void __exit imon_exit (void);

/* ------------------------------------------------------------
 *                     G L O B A L S
 * ------------------------------------------------------------
 */

struct imon_context {

	struct usb_device *dev;
	int vfd_supported;		/* not all controllers do         */
	int vfd_isopen;			/* VFD port has been opened       */
#if !defined (KERNEL_2_5)
	int subminor;			/* index into minor_table         */
	devfs_handle_t devfs;
#endif
	int ir_isopen;			/* IR port has been opened        */
	int dev_present;		/* USB device presence            */
	struct semaphore sem;		/* to lock this object            */
	wait_queue_head_t remove_ok;	/* For unexpected USB disconnects */

	int vfd_proto_6p;		/* VFD requires 6th packet        */
	int ir_onboard_decode;		/* IR signals decoded onboard     */

	struct lirc_plugin *plugin;
	struct usb_endpoint_descriptor *rx_endpoint;
	struct usb_endpoint_descriptor *tx_endpoint;
	struct urb *rx_urb;
	struct urb *tx_urb;
	unsigned char usb_rx_buf [8];
	unsigned char usb_tx_buf [8];

	struct rx_data {
		int count;		/* length of 0 or 1 sequence      */
		int prev_bit;		/* logic level of sequence        */
		int initial_space;	/* initial space flag             */

	} rx;

	struct tx_t {
		unsigned char data_buf [35]; /* user data buffer          */
		struct completion finished;  /* wait for write to finish  */
		atomic_t busy;		     /* write in progress         */
		int status;		     /* status of tx completion   */
		
	} tx;

	int mousing;			/* keyboard/mouse mode            */
};

#define LOCK_CONTEXT	down (&context ->sem)
#define UNLOCK_CONTEXT	up (&context ->sem)

/* VFD file operations */
static struct file_operations vfd_fops = {

	.owner		= THIS_MODULE,
	.open		= &vfd_open,
	.write		= &vfd_write,
	.release	= &vfd_close
};

/* USB Device ID for IMON USB Control Board */
static struct usb_device_id imon_usb_id_table [] = {
	{ USB_DEVICE(0x0aa8, 0xffda) },		/* IR & VFD    */
	{ USB_DEVICE(0x0aa8, 0x8001) },		/* IR only     */
	{ USB_DEVICE(0x15c2, 0xffda) },		/* IR & VFD    */
	{ USB_DEVICE(0x15c2, 0xffdc) },		/* IR & VFD    */
	{ USB_DEVICE(0x04e8, 0xff30) },		/* ext IR only */
	{}
};

/* Some iMON VFD models requires a 6th packet */
static unsigned short vfd_proto_6p_vendor_list [] = {
			/* terminate this list with a 0 */
			0x15c2,
			0 };
static unsigned char vfd_packet6 [] = {
		0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF };

/* Newer iMON models decode the signal onboard */
static unsigned short ir_onboard_decode_product_list [] = {
			/* terminate this list with a 0 */
			0xffdc,
			0 };

/* USB Device data */
static struct usb_driver imon_driver = {
	.owner 		= THIS_MODULE,
	.name 		= MOD_NAME,
	.probe 		= imon_probe,
	.disconnect 	= imon_disconnect,
	.id_table 	= imon_usb_id_table,
#if !defined(KERNEL_2_5)
	.fops		= &vfd_fops,
	.minor		= VFD_MINOR_BASE,
#endif
};

#ifdef KERNEL_2_5
static struct usb_class_driver imon_class = {
	.name 		= DEVFS_NAME,
	.fops		= &vfd_fops,
	.mode		= DEVFS_MODE,
	.minor_base	= VFD_MINOR_BASE,
};
#endif

/* to prevent races between open() and disconnect() */
static DECLARE_MUTEX (disconnect_sem);

static int debug = 0;

#if !defined(KERNEL_2_5)

#define MAX_DEVICES	4	/* In case there's more than one iMON device */
static struct imon_context * minor_table [MAX_DEVICES];

/*
static DECLARE_MUTEX (minor_table_sem);
#define LOCK_MINOR_TABLE	down (&minor_table_sem)
#define UNLOCK_MINOR_TABLE	up (&minor_table_sem)
*/

/* the global usb devfs handle */
extern devfs_handle_t usb_devfs_handle;

#endif

/* ------------------------------------------------------------
 *                     M O D U L E   C O D E
 * ------------------------------------------------------------
 */

MODULE_AUTHOR (MOD_AUTHOR);
MODULE_DESCRIPTION (MOD_DESC);
MODULE_LICENSE ("GPL");
module_param (debug, int, 0);
MODULE_PARM_DESC (debug, "Debug messages: 0=no, 1=yes (default: no)");

static inline void delete_context (struct imon_context *context) {

	if (context ->vfd_supported)
		usb_free_urb (context ->tx_urb);
	usb_free_urb (context ->rx_urb);
	lirc_buffer_free (context ->plugin ->rbuf);
	kfree (context ->plugin ->rbuf);
	kfree (context ->plugin);
	kfree (context);

	if (debug) info ("%s: context deleted", __FUNCTION__);
}

static inline void deregister_from_lirc (struct imon_context *context) {

	int retval;
	int minor = context ->plugin ->minor;

	if ((retval = lirc_unregister_plugin (minor))) {

		err ("%s: unable to deregister from lirc (%d)", 
			__FUNCTION__, retval);
	}
	else
		info ("Deregistered iMON plugin (minor:%d)", minor);

}

/**
 * Called when the VFD device (e.g. /dev/usb/lcd)
 * is opened by the application.
 */
static int vfd_open (struct inode *inode, struct file *file)
{
#ifdef KERNEL_2_5
	struct usb_interface *interface;
#endif
	struct imon_context *context = NULL;
	int subminor;
	int retval = SUCCESS;

	/* prevent races with disconnect */
	down (&disconnect_sem);
	
#ifdef KERNEL_2_5
	subminor = iminor (inode);
	interface = usb_find_interface (&imon_driver, subminor);
	if (!interface) {
		err ("%s: could not find interface for minor %d", __FUNCTION__, subminor);
		retval = -ENODEV;
		goto exit;
	}
	context = usb_get_intfdata (interface);
#else
	subminor = MINOR (inode ->i_rdev) - VFD_MINOR_BASE;
	if (subminor < 0 || subminor >= MAX_DEVICES) {
		err ("%s: no record of minor %d", __FUNCTION__, subminor);
		retval = -ENODEV;
		goto exit;
	}
	context = minor_table [subminor];
#endif

	if (!context) {
		err ("%s: no context found for minor %d", 
					__FUNCTION__, subminor);
		retval = -ENODEV;
		goto exit;
	}

	LOCK_CONTEXT;

	if (!context ->vfd_supported) {
		err ("%s: VFD not supported by device", __FUNCTION__);
		retval = -ENODEV;
	}
	else if (context ->vfd_isopen) {
		
		err ("%s: VFD port is already open", __FUNCTION__);
		retval = -EBUSY;
	}
	else {
		MOD_INC_USE_COUNT;
		context ->vfd_isopen = TRUE;
		file ->private_data = context;
		info ("VFD port opened");
	}

	UNLOCK_CONTEXT;

exit:
	up (&disconnect_sem);
	return retval;
}

/**
 * Called when the VFD device (e.g. /dev/usb/lcd)
 * is closed by the application.
 */
static int vfd_close (struct inode *inode, struct file *file)
{
	struct imon_context *context = NULL;
	int retval = SUCCESS;

	context = (struct imon_context *) file ->private_data;

	if (!context) {
		err ("%s: no context for device", __FUNCTION__);
		return -ENODEV;
	}

	LOCK_CONTEXT;

	if (!context ->vfd_supported) {
		err ("%s: VFD not supported by device", __FUNCTION__);
		retval = -ENODEV;
	}
	else if (!context ->vfd_isopen) {
		err ("%s: VFD is not open", __FUNCTION__);
		retval = -EIO;
	}
	else {
		context ->vfd_isopen = FALSE;
		MOD_DEC_USE_COUNT;
		info ("VFD port closed");
		if (!context ->dev_present && !context ->ir_isopen) {

			/* Device disconnected before close and IR port is not open.  */
			/* If IR port is open, context will be deleted by ir_close.   */
			UNLOCK_CONTEXT;
			delete_context (context);
			return retval;
		}
	}

	UNLOCK_CONTEXT;
	return retval;
}

/**
 * Sends a packet to the VFD.
 */
static inline int send_packet (struct imon_context *context)
{
	unsigned int pipe;
	int interval = 0;
	int retval = SUCCESS;

	pipe = usb_sndintpipe (context ->dev,
			context-> tx_endpoint ->bEndpointAddress);
#ifdef KERNEL_2_5
	interval = context ->tx_endpoint ->bInterval;
#endif	/* Use 0 for 2.4 kernels */

	usb_fill_int_urb (context ->tx_urb, context ->dev, pipe,
		context ->usb_tx_buf, sizeof (context ->usb_tx_buf),
		usb_tx_callback, context, interval);

	context ->tx_urb ->actual_length = 0;

	init_completion (&context ->tx.finished);
	atomic_set (&(context ->tx.busy), 1);

#ifdef KERNEL_2_5
	retval =  usb_submit_urb (context ->tx_urb, GFP_KERNEL);
#else
	retval =  usb_submit_urb (context ->tx_urb);
#endif
	if (retval != SUCCESS) {
		atomic_set (&(context ->tx.busy), 0);
		err ("%s: error submitting urb (%d)", __FUNCTION__, retval);
	}
	else {
		/* Wait for tranmission to complete (or abort) */
		UNLOCK_CONTEXT;
		wait_for_completion (&context ->tx.finished);
		LOCK_CONTEXT;

		retval = context ->tx.status;
		if (retval != SUCCESS)
			err ("%s: packet tx failed (%d)", __FUNCTION__, retval);
	}

	return retval;
}

/**
 * Writes data to the VFD.  The IMON VFD is 2x16 characters
 * and requires data in 5 consecutive USB interrupt packets,
 * each packet but the last carrying 7 bytes.
 *
 * I don't know if the VFD board supports features such as
 * scrolling, clearing rows, blanking, etc. so at 
 * the caller must provide a full screen of data.  If fewer
 * than 32 bytes are provided spaces will be appended to
 * generate a full screen.
 */
static ssize_t vfd_write (struct file *file, const char *buf,
				size_t n_bytes, loff_t *pos)
{

	int i;
	int offset;
	int seq;
	int retval = SUCCESS;
	struct imon_context *context;

	context = (struct imon_context *) file ->private_data;
	if (!context) {
		err ("%s: no context for device", __FUNCTION__);
		return -ENODEV;
	}

	LOCK_CONTEXT;

	if (!context ->dev_present) {
		err ("%s: no iMON device present", __FUNCTION__);
		retval = -ENODEV;
		goto exit;
	}

	if (n_bytes <= 0 || n_bytes > 32) {
		err ("%s: invalid payload size", __FUNCTION__);
		retval = -EINVAL;
		goto exit;
	}

	copy_from_user (context ->tx.data_buf, buf, n_bytes);

	/* Pad with spaces */
	for (i=n_bytes; i < 32; ++i)
		context ->tx.data_buf [i] = ' ';
	
	for (i=32; i < 35; ++i)
		context ->tx.data_buf [i] = 0xFF;

	offset = seq = 0;

	do {
		memcpy (context ->usb_tx_buf, context ->tx.data_buf + offset, 7);
		context ->usb_tx_buf [7] = (unsigned char) seq;

		if ((retval = send_packet (context)) != SUCCESS) {

			err ("%s: send packet failed for packet #%d", 
					__FUNCTION__, seq/2);
			goto exit;
		}
		else {
			seq += 2;
			offset += 7;
		}

	} while (offset < 35);

	if (context ->vfd_proto_6p) {

		/* Send packet #6 */
		memcpy (context ->usb_tx_buf, vfd_packet6, 7);
		context ->usb_tx_buf [7] = (unsigned char) seq;
		if ((retval = send_packet (context)) != SUCCESS)
			err ("%s: send packet failed for packet #%d",
					__FUNCTION__, seq/2);
	}

exit:
	UNLOCK_CONTEXT;

	return (retval == SUCCESS) ? n_bytes : retval;
}

/**
 * Callback function for USB core API: transmit data
 */
#ifdef KERNEL_2_5
static void usb_tx_callback (struct urb *urb, struct pt_regs *regs)
#else
static void usb_tx_callback (struct urb *urb)
#endif
{
	struct imon_context *context;

	if (!urb || !(context = (struct imon_context *) urb->context))
		return;

	context ->tx.status = urb ->status;

	/* notify waiters that write has finished */
	atomic_set (&context ->tx.busy, 0);
	complete (&context ->tx.finished);

	return;
}

/**
 * Called by lirc_dev when the application opens /dev/lirc
 */
static int ir_open (void *data)
{
	int retval = SUCCESS;
	struct imon_context *context;

	/* prevent races with disconnect */
	down (&disconnect_sem);

	context = (struct imon_context *) data;

	LOCK_CONTEXT;

	if (context ->ir_isopen) {
		err ("%s: IR port is already open", __FUNCTION__);
		retval = -EBUSY;
		goto exit;
	}

	/* initial IR protocol decode variables */
	context ->rx.count = 0;
	context ->rx.initial_space = 1;
	context ->rx.prev_bit = 0;

	context ->mousing = 0;				/* init keyboard mode		*/

	usb_fill_int_urb (context ->rx_urb, context ->dev,
		usb_rcvintpipe (context ->dev,
				context ->rx_endpoint-> bEndpointAddress),
		context ->usb_rx_buf, sizeof (context ->usb_rx_buf),
		usb_rx_callback, context, context ->rx_endpoint ->bInterval);

#ifdef KERNEL_2_5
	retval = usb_submit_urb (context ->rx_urb, GFP_KERNEL);
#else
	retval = usb_submit_urb (context ->rx_urb);
#endif

	if (retval) {
		err ("%s: usb_submit_urb failed for ir_open (%d)", __FUNCTION__, retval);
	}
	else {
		MOD_INC_USE_COUNT;
		context ->ir_isopen = TRUE;
		info ("IR port opened");
	}

exit:
	UNLOCK_CONTEXT;

	up (&disconnect_sem);
	return SUCCESS;
}

/**
 * Called by lirc_dev when the application closes /dev/lirc
 */
static void ir_close (void *data)
{
	struct imon_context *context;

	context = (struct imon_context *)data;
	if (!context) {
		err ("%s: no context for device", __FUNCTION__);
		return;
	}

	LOCK_CONTEXT;

	usb_kill_urb (context ->rx_urb);
	context ->ir_isopen = FALSE;
	MOD_DEC_USE_COUNT;
	info ("IR port closed");

	if (!context ->dev_present) {

		/* 
		 * Device disconnected while IR port was 
		 * still open. Plugin was not deregistered 
		 * at disconnect time, so do it now.
		 */
		deregister_from_lirc (context);

		if (!context ->vfd_isopen) {

			UNLOCK_CONTEXT;
			delete_context (context);
			return;
		}
		/* If VFD port is open, context will be deleted by vfd_close */
	}

	UNLOCK_CONTEXT;
	return;
}

/**
 * Convert bit count to time duration (in us) and submit
 * the value to lirc_dev.
 */
static inline void submit_data (struct imon_context *context)
{
	unsigned char buf [4];
	int value = context ->rx.count;
	int i;

	if (debug) info ("submitting data to LIRC");
	
	value *= BIT_DURATION;
	value &= PULSE_MASK;
	if (context ->rx.prev_bit)
		value |= PULSE_BIT;

	for (i=0; i < 4; ++i)
		buf [i] = value >> (i*8);

	lirc_buffer_write_1 (context ->plugin ->rbuf, buf);
	wake_up (&context ->plugin ->rbuf ->wait_poll);
	return;
}

/**
 * Process the incoming packet
 */
static inline void incoming_packet (struct imon_context *context, struct urb *urb)
{
	int len = urb ->actual_length;
	unsigned char *buf = urb ->transfer_buffer;
	int octet, bit;
	unsigned char mask;
	int chunk_num;


	if (len != 8) {
		warn ("%s: invalid incoming packet size (%d)", __FUNCTION__, len);
		return;
	}

	chunk_num = buf [7];
	
	if (chunk_num == 0xFF)
		return;		/* filler frame, no data here */

#ifdef DEBUG	
	{
		int i;
		for (i=0; i < 8; ++i)
			printk ("%02x ", buf [i]);
		printk ("\n");
	}
#endif

	if (context ->ir_onboard_decode) {

		/* The signals have been decoded onboard the iMON controller */

		 if(buf[0] & 0x40) {
			 int rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 | (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6;
			 int rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 | (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6;

			 if(buf[0] & 0x02) rel_x |= ~0x10+1;
			 if(buf[0] & 0x01) rel_y |= ~0x10+1;
	
			 /*
			  * keyboard direction key emulation
			  */
			if(buf[1] & 0x01 || buf[1] >> 2 & 0x01) {
#ifdef DEBUG	
				printk("mouse pressed\n");
#endif
				if (! context->mousing) buf[0] &= ~0x40; 
			} else if (((buf[0] & 0x3f) == 0x28) && (buf[1] == 0x82) && (buf[2] == 0x81)) { 
#ifdef DEBUG	
				printk("mouse released\n");
#endif
			} else if(abs(rel_y) > abs(rel_x)) { 
				if(rel_y > CURSOR_LIMIT) { /* mouse s */ 
					buf[0] = (context->mousing) ? 0x68 : 0x28; 
					buf[1] = 0x82; 
					buf[2] = 0x91; 
				} else if(rel_y < -CURSOR_LIMIT) { /* mouse n */ 
					buf[0] = (context->mousing) ? 0x69 : 0x29; 
					buf[1] = 0x02; 
					buf[2] = 0x81; 
				} else { 
					return; /* discard those key codes */ 
				} 
			} else { 
				if(rel_x > CURSOR_LIMIT) { /* mouse e */ 
					buf[0] = (context->mousing) ? 0x68 : 0x28; 
					buf[1] = 0x8A; 
					buf[2] = 0x81; 
				} else if(rel_x < -CURSOR_LIMIT) { /* mouse w */ 
					buf[0] = (context->mousing) ? 0x6A : 0x2A; 
					buf[1] = 0x82; 
					buf[2] = 0x81; 
				} else { 
					return; /* discard those key codes */ 
				} 
			} 
		}

		/*
		 * mouse/kbd button
		 * 29 91 15 b7
		 */
		if((buf[0] == 0x29) && (buf[1] == 0x91) && (buf[2] == 0x15) && (buf[3] == 0xb7)) {
#ifdef DEBUG
			printk ("toggle mousing mode: %d -> %d\n", context->mousing, !context->mousing);
#endif
			context->mousing = !context->mousing;
		}

		lirc_buffer_write_1 (context ->plugin ->rbuf, buf);
		wake_up (&context ->plugin ->rbuf ->wait_poll);
		return;
	}
	
	/*
	 * Translate received data to pulse and space lengths.
	 * Received data is active low, i.e. pulses are 0 and
	 * spaces are 1.
	 *
	 * My original algorithm was essentially similar to
	 * Changwoo Ryu's with the exception that he switched
	 * the incoming bits to active high and also fed an
	 * initial space to LIRC at the start of a new sequence
	 * if the previous bit was a pulse.
	 *
	 * I've decided to adopt his algorithm.
	 */

	if (chunk_num == 1 && context ->rx.initial_space) {

		/* LIRC requires a leading space */
		context ->rx.prev_bit = 0;
		context ->rx.count = 4;
		submit_data (context);
		context ->rx.count = 0;
	}

	for (octet=0; octet < 5; ++octet) {

		mask = 0x80;
		for (bit=0; bit < 8; ++bit) {

			int curr_bit = !(buf [octet] & mask);
			if (curr_bit != context ->rx.prev_bit) {

				if (context ->rx.count) {

					submit_data (context);
					context ->rx.count = 0;
				}
				context ->rx.prev_bit = curr_bit;
			}
			++context ->rx.count; 
			mask >>= 1;
		}
	}

	if (chunk_num == 10) {

		if (context ->rx.count) {
			submit_data (context);
			context ->rx.count = 0;
		}
		context ->rx.initial_space = context ->rx.prev_bit;
	}
}

/**
 * Callback function for USB core API: receive data
 */
#ifdef KERNEL_2_5
static void usb_rx_callback (struct urb *urb, struct pt_regs *regs)
#else
static void usb_rx_callback (struct urb *urb)
#endif
{
	struct imon_context *context;

	if (!urb || !(context = (struct imon_context *) urb->context))
		return;

	switch (urb ->status) {

		case -ENOENT: 		/* usbcore unlink successful! */ 
			return;

		case SUCCESS:
			if (context ->ir_isopen)
				incoming_packet (context, urb);
		       	break;

		default	:
			warn ("%s: status (%d): ignored",
				 __FUNCTION__, urb ->status);
			break;
	}

#ifdef KERNEL_2_5
	usb_submit_urb (context ->rx_urb, GFP_KERNEL);
#endif
	return;
}



/**
 * Callback function for USB core API: Probe
 */
#ifdef KERNEL_2_5
static int imon_probe (struct usb_interface *interface,
			const struct usb_device_id *id)
#else
static void * imon_probe (struct usb_device * dev, unsigned int intf,
			const struct usb_device_id *id)
#endif
{
#ifdef KERNEL_2_5
	struct usb_device *dev = NULL;
	struct usb_host_interface *iface_desc = NULL;
#else
	struct usb_interface *interface = NULL;
	struct usb_interface_descriptor *iface_desc = NULL;
	char name [10];
	int subminor = 0;
#endif
	struct usb_endpoint_descriptor *rx_endpoint = NULL;
	struct usb_endpoint_descriptor *tx_endpoint = NULL;
	struct urb *rx_urb = NULL;
	struct urb *tx_urb = NULL;
	struct lirc_plugin *plugin = NULL;
	struct lirc_buffer *rbuf = NULL;
	int lirc_minor = 0;
	int num_endpoints;
	int retval = SUCCESS;
	int vfd_ep_found;
	int ir_ep_found;
	int alloc_status;
	int vfd_proto_6p = FALSE;
	int ir_onboard_decode = FALSE;
	struct imon_context *context = NULL;
	int i;

	info ("%s: found IMON device", __FUNCTION__);

#if !defined(KERNEL_2_5)
	for (subminor = 0; subminor < MAX_DEVICES; ++subminor) {
		if (minor_table [subminor] == NULL)
			break;
	}
	if (subminor == MAX_DEVICES) {
	
		err ("%s: allowed number of devices already present", __FUNCTION__);
		retval = -ENOMEM;
		goto exit;
	}
#endif

#ifdef KERNEL_2_5
	dev = usb_get_dev (interface_to_usbdev (interface));
	iface_desc = interface ->cur_altsetting;
	num_endpoints = iface_desc ->desc.bNumEndpoints;
#else
	interface = &dev ->actconfig ->interface [intf];
	iface_desc = &interface ->altsetting [interface ->act_altsetting];
	num_endpoints = iface_desc ->bNumEndpoints;
#endif

	/*
	 * Scan the endpoint list and set:
	 * 	first input endpoint = IR endpoint
	 * 	first output endpoint = VFD endpoint
	 */

	ir_ep_found = vfd_ep_found = FALSE;

	for (i=0; i < num_endpoints && !(ir_ep_found && vfd_ep_found); ++i) {

		struct usb_endpoint_descriptor *ep;
		int ep_dir;
		int ep_type;
#ifdef KERNEL_2_5
		ep = &iface_desc ->endpoint [i].desc;
#else
		ep = &iface_desc ->endpoint [i];
#endif
		ep_dir = ep ->bEndpointAddress & USB_ENDPOINT_DIR_MASK;
		ep_type = ep ->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;

		if (!ir_ep_found && 
			ep_dir == USB_DIR_IN && 
			ep_type == USB_ENDPOINT_XFER_INT) {

			rx_endpoint = ep;
			ir_ep_found = TRUE;
			if (debug) 
				info ("%s: found IR endpoint", __FUNCTION__);

		}
		else if (!vfd_ep_found &&
			ep_dir == USB_DIR_OUT && 
			ep_type == USB_ENDPOINT_XFER_INT) {

			tx_endpoint = ep;
			vfd_ep_found = TRUE;
			if (debug) 
				info ("%s: found VFD endpoint", __FUNCTION__);
		}
		else
			;

	}

	/* Input endpoint is mandatory */
	if (!ir_ep_found) {

		err ("%s: no valid input (IR) endpoint found.", __FUNCTION__);
		retval = -ENODEV;
		goto exit;
	}
	else {

		/* Determine if the IR signals are decoded onboard */

		unsigned short product_id;
		unsigned short *id_list_item;

		product_id = dev ->descriptor.idProduct;
		id_list_item = ir_onboard_decode_product_list;
		while (*id_list_item) {
			if (*id_list_item++ == product_id) {
				ir_onboard_decode = TRUE;
				break;
			}
		}

		if (debug) info ("ir_onboard_decode: %d", ir_onboard_decode);
	}

	/* Determine if VFD requires 6 packets */
	if (vfd_ep_found) {

		unsigned short vendor_id;
		unsigned short *id_list_item;

		vendor_id = dev ->descriptor.idVendor;
		id_list_item = vfd_proto_6p_vendor_list;
		while (*id_list_item) {
			if (*id_list_item++ == vendor_id) {
				vfd_proto_6p = TRUE;
				break;
			}
		}

		if (debug) info ("vfd_proto_6p: %d", vfd_proto_6p);
	}


	/* Allocate memory */

	alloc_status = SUCCESS;

	if (!(context = kmalloc (sizeof(struct imon_context), GFP_KERNEL))) {
		err ("%s: kmalloc failed for context", __FUNCTION__);
		alloc_status = 1;
	}
	else if (!(plugin = kmalloc (sizeof(struct lirc_plugin), GFP_KERNEL))) {
		err ("%s: kmalloc failed for lirc_plugin", __FUNCTION__);
		alloc_status = 2;
	}
	else if (!(rbuf = kmalloc (sizeof(struct lirc_buffer), GFP_KERNEL))) {
		err ("%s: kmalloc failed for lirc_buffer", __FUNCTION__);
		alloc_status = 3;
	}
	else if (lirc_buffer_init (rbuf, BUF_CHUNK_SIZE, BUF_SIZE)) {
		err ("%s: lirc_buffer_init failed", __FUNCTION__);
		alloc_status = 4;
	}
#ifdef KERNEL_2_5
	else if (!(rx_urb = usb_alloc_urb (0, GFP_KERNEL))) {
#else
	else if (!(rx_urb = usb_alloc_urb (0))) {
#endif
		err ("%s: usb_alloc_urb failed for IR urb", __FUNCTION__);
		alloc_status = 5;
	}
#ifdef KERNEL_2_5
	else if (vfd_ep_found && !(tx_urb = usb_alloc_urb (0, GFP_KERNEL))) {
#else
	else if (vfd_ep_found && !(tx_urb = usb_alloc_urb (0))) {
#endif
		err ("%s: usb_alloc_urb failed for VFD urb", __FUNCTION__);
		alloc_status = 6;
	}
	else {

		/* clear all members of imon_context and lirc_plugin */
		memset (context, 0, sizeof (struct imon_context));
		init_MUTEX (&context ->sem);
		context ->vfd_proto_6p = vfd_proto_6p;
		context ->ir_onboard_decode = ir_onboard_decode;

		memset (plugin, 0, sizeof (struct lirc_plugin));

		strcpy (plugin ->name, MOD_NAME);
		plugin ->minor = -1;
		plugin ->code_length = (ir_onboard_decode) ?
			32 : sizeof (lirc_t) * 8;
		plugin ->sample_rate = 0;
		plugin ->features = (ir_onboard_decode) ?
			LIRC_CAN_REC_LIRCCODE : LIRC_CAN_REC_MODE2;
		plugin ->data = context;
		plugin ->rbuf = rbuf;
		plugin ->set_use_inc = ir_open;
		plugin ->set_use_dec = ir_close;
		plugin->owner = THIS_MODULE;

		LOCK_CONTEXT;

		if ((lirc_minor = lirc_register_plugin (plugin)) < 0) {
			err ("%s: lirc_register_plugin failed", __FUNCTION__);
			alloc_status = 7;
			UNLOCK_CONTEXT;
		}
		else
			info ("%s: Registered iMON plugin (minor:%d)", 
				__FUNCTION__, lirc_minor);
	}

	switch (alloc_status) {

		case 7:		if (vfd_ep_found)
					usb_free_urb (tx_urb);
		case 6:		usb_free_urb (rx_urb);
		case 5:		lirc_buffer_free (rbuf);
		case 4:		kfree (rbuf);
		case 3:		kfree (plugin);
		case 2:		kfree (context);
				context = NULL;
		case 1:		retval = -ENOMEM;
				goto exit;
	}

	// Needed while unregistering!
	plugin ->minor = lirc_minor;

	context ->dev = dev;
	context ->dev_present = TRUE;
	context ->rx_endpoint = rx_endpoint;
	context ->rx_urb = rx_urb;
	if (vfd_ep_found) {
		
		context ->vfd_supported = TRUE;
		context ->tx_endpoint = tx_endpoint;
		context ->tx_urb = tx_urb;
	}
	context ->plugin = plugin;

#ifdef KERNEL_2_5
	usb_set_intfdata (interface, context);
#else
	minor_table [subminor] = context;
	context ->subminor = subminor;
#endif

	if (vfd_ep_found) {

		if (debug) info ("Registering VFD with devfs");
#ifdef KERNEL_2_5
		if (usb_register_dev (interface, &imon_class)) {

			// Not a fatal error, so ignore
			info ("%s: could not get a minor number for VFD", 
				__FUNCTION__);
		}
#else
		sprintf (name, DEVFS_NAME, subminor);
		if (!(context ->devfs = devfs_register (usb_devfs_handle, name, 
					DEVFS_FL_DEFAULT,
					USB_MAJOR, VFD_MINOR_BASE + subminor,
					DEVFS_MODE, &vfd_fops, NULL))) {

			// not a fatal error so ignore
			info ("%s: devfs register failed for VFD",
					__FUNCTION__);
		}
#endif
	}

	info ("%s: iMON device on usb<%d:%d> initialized",
			__FUNCTION__, dev ->bus ->busnum, dev ->devnum);

	UNLOCK_CONTEXT;
exit:
#ifdef KERNEL_2_5
	return retval;
#else
	return (retval == SUCCESS) ? context : NULL;
#endif
}

/**
 * Callback function for USB core API: disonnect
 */
#ifdef KERNEL_2_5
static void imon_disconnect (struct usb_interface *interface)
#else
static void imon_disconnect (struct usb_device *dev, void *data)
#endif
{
	struct imon_context *context;

	/* prevent races with ir_open()/vfd_open() */
	down (&disconnect_sem);

#ifdef KERNEL_2_5
	context = usb_get_intfdata (interface);
#else
	context = (struct imon_context *)data;
#endif
	LOCK_CONTEXT;

	info ("%s: iMON device disconnected", __FUNCTION__);

#ifdef KERNEL_2_5
	usb_set_intfdata (interface, NULL);
#else
	minor_table [context ->subminor] = NULL;
#endif
	context ->dev_present = FALSE;

	/* Stop reception */
	usb_kill_urb (context ->rx_urb);

	/* Abort ongoing write */
	if (atomic_read (&context ->tx.busy)) {

		usb_kill_urb (context ->tx_urb);
		wait_for_completion (&context ->tx.finished);
	}

	/* De-register from lirc_dev if IR port is not open */
	if (!context ->ir_isopen)
		deregister_from_lirc (context);

	if (context ->vfd_supported) {
#ifdef KERNEL_2_5
		usb_deregister_dev (interface, &imon_class);
#else
		if (context ->devfs)
			devfs_unregister (context ->devfs);
#endif
	}

	UNLOCK_CONTEXT;

	if (!context ->ir_isopen && !context ->vfd_isopen)
		delete_context (context);
	
	up (&disconnect_sem);
}

static int __init imon_init (void)
{
	int rc;

	info (MOD_DESC ", v" MOD_VERSION);
	info (MOD_AUTHOR);

	if ((rc = usb_register (&imon_driver)) < 0) {
		err ("%s: usb register failed (%d)", __FUNCTION__, rc);
		return -ENODEV;
	}
	return SUCCESS;
}

static void __exit imon_exit (void)
{
	usb_deregister (&imon_driver);
	info ("module removed. Goodbye!");
}


module_init (imon_init);
module_exit (imon_exit);

#if !defined(KERNEL_2_5)
EXPORT_NO_SYMBOLS;
#endif
# 
# lircmd config file
# 
PROTOCOL IntelliMouse

MOVE_N * Mouse_N
MOVE_E * Mouse_E
MOVE_S * Mouse_S
MOVE_W * Mouse_W

BUTTON1_CLICK * MouseLeftClick
BUTTON3_CLICK * MouseRightClick
# Please make this file available to others
# by sending it to <[EMAIL PROTECTED]>
#
# this config file was automatically generated
# using lirc-0.7.1pre2(imon) on Tue Mar  1 23:15:44 2005
#
# contributed by Venky Raju
#
# brand:                       iMON-New
# model no. of remote control: iMON-PAD
# devices being controlled by this remote:
#

begin remote

  name     iMON-PAD
  bits           32
  eps            30
  aeps          100

  one             0     0
  zero            0     0
  gap          235965
  min_repeat      1
  toggle_bit      0


      begin codes
          AppExit                  0x288195B7
          Record                   0x298115B7
          Play                     0x2A8115B7
          SlowMotion               0x29B195B7
          Rewind                   0x2A8195B7
          Pause                    0x2A9115B7
          FastForward              0x2B8115B7
          PrevChapter              0x2B9115B7
          Stop                     0x2B9715B7
          NextChapter              0x298195B7
          Esc                      0x2BB715B7
          Eject                    0x299395B7
          AppLauncher              0x29B715B7
          MultiMon                 0x2AB195B7
          TaskSwitcher             0x2A9395B7
          Mute                     0x2B9595B7
          Vol+                     0x28A395B7
          Vol-                     0x28A595B7
          Ch+                      0x289395B7
          Ch-                      0x288795B7
          Timer                    0x2B8395B7
          1                        0x28B595B7
          2                        0x2BB195B7
          3                        0x28B195B7
          4                        0x2A8595B7
          5                        0x299595B7
          6                        0x2AA595B7
          7                        0x2B9395B7
          8                        0x2A8515B7
          9                        0x2AA115B7
          0                        0x2BA595B7
          ShiftTab                 0x28B515B7
          Tab                      0x29A115B7
          MyMovie                  0x2B8515B7
          MyMusic                  0x299195B7
          MyPhoto                  0x2BA115B7
          MyTV                     0x28A515B7
          Bookmark                 0x288515B7
          Thumbnail                0x2AB715B7
          AspectRatio              0x29A595B7
          FullScreen               0x2AA395B7
          MyDVD                    0x29A295B7
          Menu                     0x2BA385B7
          Caption                  0x298595B7
          Language                 0x2B8595B7
          MouseKeyboard            0x299115B7
          SelectSpace              0x2A9315B7
          MouseMenu                0x28B715B7
          MouseRightClick          0x688481B7
          Enter                    0x28A195B7
          MouseLeftClick           0x688301B7
          WindowsKey               0x2B8195B7
          Backspace                0x28A115B7

          Up                       0x290281B7
          Down                     0x288291B7
          Left                     0x2A8281B7
          Right                    0x288A81B7
          KbdLeftClick             0x288301B7
          KbdRightClick            0x288481B7
          Mouse_N                  0x690281B7
          Mouse_S                  0x688291B7
          Mouse_W                  0x6A8281B7
          Mouse_E                  0x688A81B7
          MouseLeftClick           0x688301B7
          MouseRightClick          0x688481B7
      end codes

end remote 
#
# the following keys are unused:
#       sleep
#       freeze
#       guide
#       enter
#       plus100
#
begin
        prog = mythtv
        button = Esc
        config = Esc
end
begin
        prog = mythtv
        button = 1
        config = 1  
end
begin
        prog = mythtv
        button = 2
        config = 2  
end
begin
        prog = mythtv
        button = 3
        config = 3  
end
begin
        prog = mythtv
        button = 4
        config = 4  
end
begin
        prog = mythtv
        button = 5
        config = 5  
end
begin
        prog = mythtv
        button = 6
        config = 6  
end
begin
        prog = mythtv
        button = 7
        config = 7  
end
begin
        prog = mythtv
        button = 8
        config = 8  
end
begin
        prog = mythtv
        button = 9
        config = 9  
end
begin
        prog = mythtv
        button = 0
        config = 0  
end
begin
        prog = mythtv
        button = Menu
        config = M  
end
begin
        prog = mythtv
        button = Caption
        config = I  
end
begin
        prog = mythtv
        button = Vol-
        repeat = 5
        config = [  
end
begin
        prog = mythtv
        button = Vol+
        repeat = 5
        config = ]  
end
begin
        prog = mythtv
        button = Ch+
        repeat = 5
        delay = 5
        config = Up
end
begin
        prog = mythtv
        button = Ch-
        repeat = 5
        delay = 5
        config = Down
end
begin
        prog = mythtv
        button = Up
        repeat = 5
        delay = 5
        config = Up
end
begin
        prog = mythtv
        button = Down
        repeat = 5
        delay = 5
        config = Down
end
begin
        prog = mythtv
        button = Left
        repeat = 5
        delay = 5
        config = Left
end
begin
        prog = mythtv
        button = Right
        repeat = 5
        delay = 5
        config = Right
end
begin
        prog = mythtv
        button = Enter
        config = Return
end
begin
        prog = mythtv
        button = Mute
        config = |
end
begin
        prog = mythtv
        button = Thumbnail
        config = V  
end
begin
        prog = mythtv
        button = Play
        config = P  
end
begin
        prog = mythtv
        button = Record
        config = R  
end
begin
        prog = mythtv
        button = Stop
        config = T  
end
begin
        prog = mythtv
        button = Pause
        config = P  
end
begin
        prog = mythtv
        button = Rewind
        config = Q  
end
begin
        prog = mythtv
        button = FastForward
        config = Z  
end
begin
        prog = mythtv
        button = AspectRatio
        config = W
end




#begin
#       prog = mythtv
#       button = AppExit
#       config = ?
#end
#begin
#       prog = mythtv
#       button = SlowMotion
#       config = ?
#end
#begin
#       prog = mythtv
#       button = PrevChapter
#       config = ?
#end
#begin
#       prog = mythtv
#       button = NextChapter
#       config = ?
#end
#begin
#       prog = mythtv
#       button = Eject
#       config = ?
#end
#begin
#       prog = mythtv
#       button = AppLauncher
#       config = ?
#end
#begin
#       prog = mythtv
#       button = MultiMon
#       config = ?
#end
#begin
#       prog = mythtv
#       button = TaskSwitcher
#       config = ?
#end
#begin
#       prog = mythtv
#       button = Timer
#       config = ?
#end
#begin
#       prog = mythtv
#       button = MyMovie
#       config = ?
#end
#begin
#       prog = mythtv
#       button = MyMusic
#       config = ?
#end
#begin
#       prog = mythtv
#       button = MyPhoto
#       config = ?
#end
#begin
#       prog = mythtv
#       button = MyTV
#       config = ?
#end
#begin
#       prog = mythtv
#       button = Bookmark
#       config = ?
#end
#begin
#       prog = mythtv
#       button = FullScreen
#       config = ?
#end
#begin
#       prog = mythtv
#       button = MyDVD
#       config = ?
#end
#begin
#       prog = mythtv
#       button = Language
#       config = ?
#end
#begin
#       prog = mythtv
#       button = MouseKeyboard
#       config = ?
#end
#begin
#       prog = mythtv
#       button = SelectSpace
#       config = ?
#end
#begin
#       prog = mythtv
#       button = MouseMenu
#       config = ?
#end
#begin
#       prog = mythtv
#       button = MouseRightClick
#       config = ?
#end
#begin
#       prog = mythtv
#       button = Enter
#       config = ?
#end
#begin
#       prog = mythtv
#       button = MouseLeftClick
#       config = ?
#end
#begin
#       prog = mythtv
#       button = WindowsKey
#       config = ?
#end
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