drivers/media/usb/pvrusb2/pvrusb2-main.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *
 *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
 *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
 */

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/videodev2.h>

#include "pvrusb2-hdw.h"
#include "pvrusb2-devattr.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_STD| \
			    PVR2_TRACE_TOLERANCE| \
			    PVR2_TRACE_TRAP| \
			    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 = NULL;
#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_DVB
	/* Create association with dvb layer */
	pvr2_dvb_create(pvr);
#endif
#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 = {
	.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");

	ret = pvr2_context_global_init();
	if (ret != 0) {
		pvr2_trace(PVR2_TRACE_INIT,"pvr_init failure code=%d",ret);
		return ret;
	}

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

	ret = usb_register(&pvr_driver);

	if (ret == 0)
		pr_info("pvrusb2: " DRIVER_VERSION ":"
		       DRIVER_DESC "\n");
	if (pvrusb2_debug)
		pr_info("pvrusb2: Debug mask is %d (0x%x)\n",
		       pvrusb2_debug,pvrusb2_debug);

	pvr2_trace(PVR2_TRACE_INIT,"pvr_init complete");

	return ret;
}

static void __exit pvr_exit(void)
{
	pvr2_trace(PVR2_TRACE_INIT,"pvr_exit");

	usb_deregister(&pvr_driver);

	pvr2_context_global_done();

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

	pvr2_trace(PVR2_TRACE_INIT,"pvr_exit complete");
}

module_init(pvr_init);
module_exit(pvr_exit);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_VERSION("0.9.1");