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

   1 /*
   2  *
   3  *
   4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   5  *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  */
  17
  18 #include <linux/kernel.h>
  19 #include <linux/errno.h>
  20 #include <linux/module.h>
  21 #include <linux/usb.h>
  22 #include <linux/videodev2.h>
  23
  24 #include "pvrusb2-hdw.h"
  25 #include "pvrusb2-devattr.h"
  26 #include "pvrusb2-context.h"
  27 #include "pvrusb2-debug.h"
  28 #include "pvrusb2-v4l2.h"
  29 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  30 #include "pvrusb2-sysfs.h"
  31 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  32
  33 #define DRIVER_AUTHOR "Mike Isely <isely@pobox.com>"
  34 #define DRIVER_DESC "Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner"
  35 #define DRIVER_VERSION "V4L in-tree version"
  36
  37 #define DEFAULT_DEBUG_MASK (PVR2_TRACE_ERROR_LEGS| \
  38                             PVR2_TRACE_INFO| \
  39                             PVR2_TRACE_STD| \
  40                             PVR2_TRACE_TOLERANCE| \
  41                             PVR2_TRACE_TRAP| \
  42                             0)
  43
  44 int pvrusb2_debug = DEFAULT_DEBUG_MASK;
  45
  46 module_param_named(debug,pvrusb2_debug,int,S_IRUGO|S_IWUSR);
  47 MODULE_PARM_DESC(debug, "Debug trace mask");
  48
  49 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  50 static struct pvr2_sysfs_class *class_ptr = NULL;
  51 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  52
  53 static void pvr_setup_attach(struct pvr2_context *pvr)
  54 {
  55         /* Create association with v4l layer */
  56         pvr2_v4l2_create(pvr);
  57 #ifdef CONFIG_VIDEO_PVRUSB2_DVB
  58         /* Create association with dvb layer */
  59         pvr2_dvb_create(pvr);
  60 #endif
  61 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  62         pvr2_sysfs_create(pvr,class_ptr);
  63 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  64 }
  65
  66 static int pvr_probe(struct usb_interface *intf,
  67                      const struct usb_device_id *devid)
  68 {
  69         struct pvr2_context *pvr;
  70
  71         /* Create underlying hardware interface */
  72         pvr = pvr2_context_create(intf,devid,pvr_setup_attach);
  73         if (!pvr) {
  74                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  75                            "Failed to create hdw handler");
  76                 return -ENOMEM;
  77         }
  78
  79         pvr2_trace(PVR2_TRACE_INIT,"pvr_probe(pvr=%p)",pvr);
  80
  81         usb_set_intfdata(intf, pvr);
  82
  83         return 0;
  84 }
  85
  86 /*
  87  * pvr_disconnect()
  88  *
  89  */
  90 static void pvr_disconnect(struct usb_interface *intf)
  91 {
  92         struct pvr2_context *pvr = usb_get_intfdata(intf);
  93
  94         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) BEGIN",pvr);
  95
  96         usb_set_intfdata (intf, NULL);
  97         pvr2_context_disconnect(pvr);
  98
  99         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) DONE",pvr);
 100
 101 }
 102
 103 static struct usb_driver pvr_driver = {
 104         .name =         "pvrusb2",
 105         .id_table =     pvr2_device_table,
 106         .probe =        pvr_probe,
 107         .disconnect =   pvr_disconnect
 108 };
 109
 110 /*
 111  * pvr_init() / pvr_exit()
 112  *
 113  * This code is run to initialize/exit the driver.
 114  *
 115  */
 116 static int __init pvr_init(void)
 117 {
 118         int ret;
 119
 120         pvr2_trace(PVR2_TRACE_INIT,"pvr_init");
 121
 122         ret = pvr2_context_global_init();
 123         if (ret != 0) {
 124                 pvr2_trace(PVR2_TRACE_INIT,"pvr_init failure code=%d",ret);
 125                 return ret;
 126         }
 127
 128 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
 129         class_ptr = pvr2_sysfs_class_create();
 130 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
 131
 132         ret = usb_register(&pvr_driver);
 133
 134         if (ret == 0)
 135                 printk(KERN_INFO "pvrusb2: " DRIVER_VERSION ":"
 136                        DRIVER_DESC "\n");
 137         if (pvrusb2_debug)
 138                 printk(KERN_INFO "pvrusb2: Debug mask is %d (0x%x)\n",
 139                        pvrusb2_debug,pvrusb2_debug);
 140
 141         pvr2_trace(PVR2_TRACE_INIT,"pvr_init complete");
 142
 143         return ret;
 144 }
 145
 146 static void __exit pvr_exit(void)
 147 {
 148         pvr2_trace(PVR2_TRACE_INIT,"pvr_exit");
 149
 150         usb_deregister(&pvr_driver);
 151
 152         pvr2_context_global_done();
 153
 154 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
 155         pvr2_sysfs_class_destroy(class_ptr);
 156 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
 157
 158         pvr2_trace(PVR2_TRACE_INIT,"pvr_exit complete");
 159 }
 160
 161 module_init(pvr_init);
 162 module_exit(pvr_exit);
 163
 164 MODULE_AUTHOR(DRIVER_AUTHOR);
 165 MODULE_DESCRIPTION(DRIVER_DESC);
 166 MODULE_LICENSE("GPL");
 167 MODULE_VERSION("0.9.1");