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-devattr.h"
  32 #include "pvrusb2-context.h"
  33 #include "pvrusb2-debug.h"
  34 #include "pvrusb2-v4l2.h"
  35 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  36 #include "pvrusb2-sysfs.h"
  37 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  38
  39 #define DRIVER_AUTHOR "Mike Isely <isely@pobox.com>"
  40 #define DRIVER_DESC "Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner"
  41 #define DRIVER_VERSION "V4L in-tree version"
  42
  43 #define DEFAULT_DEBUG_MASK (PVR2_TRACE_ERROR_LEGS| \
  44                             PVR2_TRACE_INFO| \
  45                             PVR2_TRACE_STD| \
  46                             PVR2_TRACE_TOLERANCE| \
  47                             PVR2_TRACE_TRAP| \
  48                             0)
  49
  50 int pvrusb2_debug = DEFAULT_DEBUG_MASK;
  51
  52 module_param_named(debug,pvrusb2_debug,int,S_IRUGO|S_IWUSR);
  53 MODULE_PARM_DESC(debug, "Debug trace mask");
  54
  55 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  56 static struct pvr2_sysfs_class *class_ptr = NULL;
  57 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  58
  59 static void pvr_setup_attach(struct pvr2_context *pvr)
  60 {
  61         /* Create association with v4l layer */
  62         pvr2_v4l2_create(pvr);
  63 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  64         pvr2_sysfs_create(pvr,class_ptr);
  65 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  66 }
  67
  68 static int pvr_probe(struct usb_interface *intf,
  69                      const struct usb_device_id *devid)
  70 {
  71         struct pvr2_context *pvr;
  72
  73         /* Create underlying hardware interface */
  74         pvr = pvr2_context_create(intf,devid,pvr_setup_attach);
  75         if (!pvr) {
  76                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  77                            "Failed to create hdw handler");
  78                 return -ENOMEM;
  79         }
  80
  81         pvr2_trace(PVR2_TRACE_INIT,"pvr_probe(pvr=%p)",pvr);
  82
  83         usb_set_intfdata(intf, pvr);
  84
  85         return 0;
  86 }
  87
  88 /*
  89  * pvr_disconnect()
  90  *
  91  */
  92 static void pvr_disconnect(struct usb_interface *intf)
  93 {
  94         struct pvr2_context *pvr = usb_get_intfdata(intf);
  95
  96         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) BEGIN",pvr);
  97
  98         usb_set_intfdata (intf, NULL);
  99         pvr2_context_disconnect(pvr);
 100
 101         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) DONE",pvr);
 102
 103 }
 104
 105 static struct usb_driver pvr_driver = {
 106         .name =         "pvrusb2",
 107         .id_table =     pvr2_device_table,
 108         .probe =        pvr_probe,
 109         .disconnect =   pvr_disconnect
 110 };
 111
 112 /*
 113  * pvr_init() / pvr_exit()
 114  *
 115  * This code is run to initialize/exit the driver.
 116  *
 117  */
 118 static int __init pvr_init(void)
 119 {
 120         int ret;
 121
 122         pvr2_trace(PVR2_TRACE_INIT,"pvr_init");
 123
 124 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
 125         class_ptr = pvr2_sysfs_class_create();
 126 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
 127
 128         ret = usb_register(&pvr_driver);
 129
 130         if (ret == 0)
 131                 info(DRIVER_DESC " : " DRIVER_VERSION);
 132         if (pvrusb2_debug) info("Debug mask is %d (0x%x)",
 133                                 pvrusb2_debug,pvrusb2_debug);
 134
 135         return ret;
 136 }
 137
 138 static void __exit pvr_exit(void)
 139 {
 140         pvr2_trace(PVR2_TRACE_INIT,"pvr_exit");
 141
 142         usb_deregister(&pvr_driver);
 143
 144 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
 145         pvr2_sysfs_class_destroy(class_ptr);
 146 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
 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   */