Quelle  pvrusb2-main.c   Sprache: 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"
#include "pvrusb2-sysfs.h"

#define DRIVER_AUTHOR "Mike Isely "
#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");

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
 pvr2_sysfs_create(pvr);
}

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;
 }

 pvr2_sysfs_class_create();

 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();

 pvr2_sysfs_class_destroy();

 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");