/*
 *
 *  $Id$
 *
 *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
 *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
 *
 *  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
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include "compat.h"
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/smp_lock.h>
#include <linux/usb.h>
#include <linux/videodev2.h>

#include "pvrusb2-hdw.h"
#include "pvrusb2-context.h"
#include "pvrusb2-debug.h"
#include "pvrusb2-v4l2.h"
#ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
#include "pvrusb2-sysfs.h"
#endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */

#define DRIVER_AUTHOR "Mike Isely <isely@pobox.com>"
#define DRIVER_DESC "Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner"
#define DRIVER_VERSION "V4L in-tree version"

#define DEFAULT_DEBUG_MASK (PVR2_TRACE_ERROR_LEGS| \
			    PVR2_TRACE_INFO| \
			    PVR2_TRACE_TOLERANCE| \
			    PVR2_TRACE_TRAP| \
			    PVR2_TRACE_FIRMWARE| \
			    PVR2_TRACE_EEPROM | \
			    PVR2_TRACE_INIT | \
			    PVR2_TRACE_I2C | \
			    PVR2_TRACE_CHIPS | \
			    PVR2_TRACE_START_STOP | \
			    PVR2_TRACE_CTL | \
			    PVR2_TRACE_DEBUGIFC | \
			    0)

int pvrusb2_debug = DEFAULT_DEBUG_MASK;

module_param_named(debug,pvrusb2_debug,int,S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(debug, "Debug trace mask");

#ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
static struct pvr2_sysfs_class *class_ptr = 0;
#endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */

static void pvr_setup_attach(struct pvr2_context *pvr)
{
	/* Create association with v4l layer */
	pvr2_v4l2_create(pvr);
#ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
	pvr2_sysfs_create(pvr,class_ptr);
#endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
}

static int pvr_probe(struct usb_interface *intf,
		     const struct usb_device_id *devid)
{
	struct pvr2_context *pvr;

	/* Create underlying hardware interface */
	pvr = pvr2_context_create(intf,devid,pvr_setup_attach);
	if (!pvr) {
		pvr2_trace(PVR2_TRACE_ERROR_LEGS,
			   "Failed to create hdw handler");
		return -ENOMEM;
	}

	pvr2_trace(PVR2_TRACE_INIT,"pvr_probe(pvr=%p)",pvr);

	usb_set_intfdata(intf, pvr);

	return 0;
}

/*
 * pvr_disconnect()
 *
 */
static void pvr_disconnect(struct usb_interface *intf)
{
	struct pvr2_context *pvr = usb_get_intfdata(intf);

	pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) BEGIN",pvr);

	usb_set_intfdata (intf, NULL);
	pvr2_context_disconnect(pvr);

	pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) DONE",pvr);

}

static struct usb_driver pvr_driver = {
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16)
	owner:   THIS_MODULE,
#endif
	name:           "pvrusb2",
	id_table:       pvr2_device_table,
	probe:          pvr_probe,
	disconnect:     pvr_disconnect
};

/*
 * pvr_init() / pvr_exit()
 *
 * This code is run to initialize/exit the driver.
 *
 */
static int __init pvr_init(void)
{
	int ret;

	pvr2_trace(PVR2_TRACE_INIT,"pvr_init");

#ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
	class_ptr = pvr2_sysfs_class_create();
#endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */

	ret = usb_register(&pvr_driver);

	if (ret == 0)
		info(DRIVER_DESC " : " DRIVER_VERSION);
	if (pvrusb2_debug) info("Debug mask is %d (0x%x)",
				pvrusb2_debug,pvrusb2_debug);

	return ret;
}

static void __exit pvr_exit(void)
{

	pvr2_trace(PVR2_TRACE_INIT,"pvr_exit");

#ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
	pvr2_sysfs_class_destroy(class_ptr);
#endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */

	usb_deregister(&pvr_driver);
}

module_init(pvr_init);
module_exit(pvr_exit);

/* Mike Isely <mcisely@pobox.com> 11-Mar-2006: See pvrusb2-hdw.c for
   MODULE_DEVICE_TABLE().  We have to declare that attribute there
   because that's where the device table actually is now and it seems
   that certain gcc configurations get angry if MODULE_DEVICE_TABLE()
   is used on what ends up being an external symbol. */
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");


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