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

   1 /*
   2  *
   3  *  $Id$
   4  *
   5  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   6  *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  */
  22
  23 #include <linux/kernel.h>
  24 #include <linux/errno.h>
  25 #include <linux/slab.h>
  26 #include <linux/module.h>
  27 #include <linux/usb.h>
  28 #include <linux/videodev2.h>
  29
  30 #include "pvrusb2-hdw.h"
  31 #include "pvrusb2-context.h"
  32 #include "pvrusb2-debug.h"
  33 #include "pvrusb2-v4l2.h"
  34 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  35 #include "pvrusb2-sysfs.h"
  36 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  37
  38 #define DRIVER_AUTHOR "Mike Isely <isely@pobox.com>"
  39 #define DRIVER_DESC "Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner"
  40 #define DRIVER_VERSION "V4L in-tree version"
  41
  42 #define DEFAULT_DEBUG_MASK (PVR2_TRACE_ERROR_LEGS| \
  43                             PVR2_TRACE_INFO| \
  44                             PVR2_TRACE_STD| \
  45                             PVR2_TRACE_TOLERANCE| \
  46                             PVR2_TRACE_TRAP| \
  47                             0)
  48
  49 int pvrusb2_debug = DEFAULT_DEBUG_MASK;
  50
  51 module_param_named(debug,pvrusb2_debug,int,S_IRUGO|S_IWUSR);
  52 MODULE_PARM_DESC(debug, "Debug trace mask");
  53
  54 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  55 static struct pvr2_sysfs_class *class_ptr = NULL;
  56 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  57
  58 static void pvr_setup_attach(struct pvr2_context *pvr)
  59 {
  60         /* Create association with v4l layer */
  61         pvr2_v4l2_create(pvr);
  62 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  63         pvr2_sysfs_create(pvr,class_ptr);
  64 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  65 }
  66
  67 static int pvr_probe(struct usb_interface *intf,
  68                      const struct usb_device_id *devid)
  69 {
  70         struct pvr2_context *pvr;
  71
  72         /* Create underlying hardware interface */
  73         pvr = pvr2_context_create(intf,devid,pvr_setup_attach);
  74         if (!pvr) {
  75                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  76                            "Failed to create hdw handler");
  77                 return -ENOMEM;
  78         }
  79
  80         pvr2_trace(PVR2_TRACE_INIT,"pvr_probe(pvr=%p)",pvr);
  81
  82         usb_set_intfdata(intf, pvr);
  83
  84         return 0;
  85 }
  86
  87 /*
  88  * pvr_disconnect()
  89  *
  90  */
  91 static void pvr_disconnect(struct usb_interface *intf)
  92 {
  93         struct pvr2_context *pvr = usb_get_intfdata(intf);
  94
  95         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) BEGIN",pvr);
  96
  97         usb_set_intfdata (intf, NULL);
  98         pvr2_context_disconnect(pvr);
  99
 100         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) DONE",pvr);
 101
 102 }
 103
 104 static struct usb_driver pvr_driver = {
 105         .name =         "pvrusb2",
 106         .id_table =     pvr2_device_table,
 107         .probe =        pvr_probe,
 108         .disconnect =   pvr_disconnect
 109 };
 110
 111 /*
 112  * pvr_init() / pvr_exit()
 113  *
 114  * This code is run to initialize/exit the driver.
 115  *
 116  */
 117 static int __init pvr_init(void)
 118 {
 119         int ret;
 120
 121         pvr2_trace(PVR2_TRACE_INIT,"pvr_init");
 122
 123 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
 124         class_ptr = pvr2_sysfs_class_create();
 125 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
 126
 127         ret = usb_register(&pvr_driver);
 128
 129         if (ret == 0)
 130                 info(DRIVER_DESC " : " DRIVER_VERSION);
 131         if (pvrusb2_debug) info("Debug mask is %d (0x%x)",
 132                                 pvrusb2_debug,pvrusb2_debug);
 133
 134         return ret;
 135 }
 136
 137 static void __exit pvr_exit(void)
 138 {
 139
 140         pvr2_trace(PVR2_TRACE_INIT,"pvr_exit");
 141
 142 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
 143         pvr2_sysfs_class_destroy(class_ptr);
 144 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
 145
 146         usb_deregister(&pvr_driver);
 147 }
 148
 149 module_init(pvr_init);
 150 module_exit(pvr_exit);
 151
 152 /* Mike Isely <mcisely@pobox.com> 11-Mar-2006: See pvrusb2-hdw.c for
 153    MODULE_DEVICE_TABLE().  We have to declare that attribute there
 154    because that's where the device table actually is now and it seems
 155    that certain gcc configurations get angry if MODULE_DEVICE_TABLE()
 156    is used on what ends up being an external symbol. */
 157 MODULE_AUTHOR(DRIVER_AUTHOR);
 158 MODULE_DESCRIPTION(DRIVER_DESC);
 159 MODULE_LICENSE("GPL");
 160
 161
 162 /*
 163   Stuff for Emacs to see, in order to encourage consistent editing style:
 164   *** Local Variables: ***
 165   *** mode: c ***
 166   *** fill-column: 70 ***
 167   *** tab-width: 8 ***
 168   *** c-basic-offset: 8 ***
 169   *** End: ***
 170   */