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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *
   4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   5  *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
   6  */
   7
   8 #include <linux/kernel.h>
   9 #include <linux/errno.h>
  10 #include <linux/module.h>
  11 #include <linux/usb.h>
  12 #include <linux/videodev2.h>
  13
  14 #include "pvrusb2-hdw.h"
  15 #include "pvrusb2-devattr.h"
  16 #include "pvrusb2-context.h"
  17 #include "pvrusb2-debug.h"
  18 #include "pvrusb2-v4l2.h"
  19 #include "pvrusb2-sysfs.h"
  20
  21 #define DRIVER_AUTHOR "Mike Isely <isely@pobox.com>"
  22 #define DRIVER_DESC "Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner"
  23 #define DRIVER_VERSION "V4L in-tree version"
  24
  25 #define DEFAULT_DEBUG_MASK (PVR2_TRACE_ERROR_LEGS| \
  26                             PVR2_TRACE_INFO| \
  27                             PVR2_TRACE_STD| \
  28                             PVR2_TRACE_TOLERANCE| \
  29                             PVR2_TRACE_TRAP| \
  30                             0)
  31
  32 int pvrusb2_debug = DEFAULT_DEBUG_MASK;
  33
  34 module_param_named(debug,pvrusb2_debug,int,S_IRUGO|S_IWUSR);
  35 MODULE_PARM_DESC(debug, "Debug trace mask");
  36
  37 static void pvr_setup_attach(struct pvr2_context *pvr)
  38 {
  39         /* Create association with v4l layer */
  40         pvr2_v4l2_create(pvr);
  41 #ifdef CONFIG_VIDEO_PVRUSB2_DVB
  42         /* Create association with dvb layer */
  43         pvr2_dvb_create(pvr);
  44 #endif
  45         pvr2_sysfs_create(pvr);
  46 }
  47
  48 static int pvr_probe(struct usb_interface *intf,
  49                      const struct usb_device_id *devid)
  50 {
  51         struct pvr2_context *pvr;
  52
  53         /* Create underlying hardware interface */
  54         pvr = pvr2_context_create(intf,devid,pvr_setup_attach);
  55         if (!pvr) {
  56                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  57                            "Failed to create hdw handler");
  58                 return -ENOMEM;
  59         }
  60
  61         pvr2_trace(PVR2_TRACE_INIT,"pvr_probe(pvr=%p)",pvr);
  62
  63         usb_set_intfdata(intf, pvr);
  64
  65         return 0;
  66 }
  67
  68 /*
  69  * pvr_disconnect()
  70  *
  71  */
  72 static void pvr_disconnect(struct usb_interface *intf)
  73 {
  74         struct pvr2_context *pvr = usb_get_intfdata(intf);
  75
  76         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) BEGIN",pvr);
  77
  78         usb_set_intfdata (intf, NULL);
  79         pvr2_context_disconnect(pvr);
  80
  81         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) DONE",pvr);
  82
  83 }
  84
  85 static struct usb_driver pvr_driver = {
  86         .name =         "pvrusb2",
  87         .id_table =     pvr2_device_table,
  88         .probe =        pvr_probe,
  89         .disconnect =   pvr_disconnect
  90 };
  91
  92 /*
  93  * pvr_init() / pvr_exit()
  94  *
  95  * This code is run to initialize/exit the driver.
  96  *
  97  */
  98 static int __init pvr_init(void)
  99 {
 100         int ret;
 101
 102         pvr2_trace(PVR2_TRACE_INIT,"pvr_init");
 103
 104         ret = pvr2_context_global_init();
 105         if (ret != 0) {
 106                 pvr2_trace(PVR2_TRACE_INIT,"pvr_init failure code=%d",ret);
 107                 return ret;
 108         }
 109
 110         pvr2_sysfs_class_create();
 111
 112         ret = usb_register(&pvr_driver);
 113
 114         if (ret == 0)
 115                 pr_info("pvrusb2: " DRIVER_VERSION ":"
 116                        DRIVER_DESC "\n");
 117         if (pvrusb2_debug)
 118                 pr_info("pvrusb2: Debug mask is %d (0x%x)\n",
 119                        pvrusb2_debug,pvrusb2_debug);
 120
 121         pvr2_trace(PVR2_TRACE_INIT,"pvr_init complete");
 122
 123         return ret;
 124 }
 125
 126 static void __exit pvr_exit(void)
 127 {
 128         pvr2_trace(PVR2_TRACE_INIT,"pvr_exit");
 129
 130         usb_deregister(&pvr_driver);
 131
 132         pvr2_context_global_done();
 133
 134         pvr2_sysfs_class_destroy();
 135
 136         pvr2_trace(PVR2_TRACE_INIT,"pvr_exit complete");
 137 }
 138
 139 module_init(pvr_init);
 140 module_exit(pvr_exit);
 141
 142 MODULE_AUTHOR(DRIVER_AUTHOR);
 143 MODULE_DESCRIPTION(DRIVER_DESC);
 144 MODULE_LICENSE("GPL");
 145 MODULE_VERSION("0.9.1");