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/config.h>
  24 #include <linux/kernel.h>
  25 #include <linux/errno.h>
  26 #include <linux/slab.h>
  27 #include <linux/module.h>
  28 #include <linux/moduleparam.h>
  29 #include <linux/smp_lock.h>
  30 #include <linux/usb.h>
  31 #include <linux/videodev2.h>
  32
  33 #include "pvrusb2-hdw.h"
  34 #include "pvrusb2-context.h"
  35 #include "pvrusb2-debug.h"
  36 #include "pvrusb2-v4l2.h"
  37 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  38 #include "pvrusb2-sysfs.h"
  39 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  40
  41 #define DRIVER_AUTHOR "Mike Isely <isely@pobox.com>"
  42 #define DRIVER_DESC "Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner"
  43 #define DRIVER_VERSION "V4L in-tree version"
  44
  45 #define DEFAULT_DEBUG_MASK (PVR2_TRACE_ERROR_LEGS| \
  46                             PVR2_TRACE_INFO| \
  47                             PVR2_TRACE_TOLERANCE| \
  48                             PVR2_TRACE_TRAP| \
  49                             0)
  50
  51 int pvrusb2_debug = DEFAULT_DEBUG_MASK;
  52
  53 module_param_named(debug,pvrusb2_debug,int,S_IRUGO|S_IWUSR);
  54 MODULE_PARM_DESC(debug, "Debug trace mask");
  55
  56 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  57 static struct pvr2_sysfs_class *class_ptr = NULL;
  58 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  59
  60 static void pvr_setup_attach(struct pvr2_context *pvr)
  61 {
  62         /* Create association with v4l layer */
  63         pvr2_v4l2_create(pvr);
  64 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  65         pvr2_sysfs_create(pvr,class_ptr);
  66 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  67 }
  68
  69 static int pvr_probe(struct usb_interface *intf,
  70                      const struct usb_device_id *devid)
  71 {
  72         struct pvr2_context *pvr;
  73
  74         /* Create underlying hardware interface */
  75         pvr = pvr2_context_create(intf,devid,pvr_setup_attach);
  76         if (!pvr) {
  77                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  78                            "Failed to create hdw handler");
  79                 return -ENOMEM;
  80         }
  81
  82         pvr2_trace(PVR2_TRACE_INIT,"pvr_probe(pvr=%p)",pvr);
  83
  84         usb_set_intfdata(intf, pvr);
  85
  86         return 0;
  87 }
  88
  89 /*
  90  * pvr_disconnect()
  91  *
  92  */
  93 static void pvr_disconnect(struct usb_interface *intf)
  94 {
  95         struct pvr2_context *pvr = usb_get_intfdata(intf);
  96
  97         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) BEGIN",pvr);
  98
  99         usb_set_intfdata (intf, NULL);
 100         pvr2_context_disconnect(pvr);
 101
 102         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) DONE",pvr);
 103
 104 }
 105
 106 static struct usb_driver pvr_driver = {
 107         .name =         "pvrusb2",
 108         .id_table =     pvr2_device_table,
 109         .probe =        pvr_probe,
 110         .disconnect =   pvr_disconnect
 111 };
 112
 113 /*
 114  * pvr_init() / pvr_exit()
 115  *
 116  * This code is run to initialize/exit the driver.
 117  *
 118  */
 119 static int __init pvr_init(void)
 120 {
 121         int ret;
 122
 123         pvr2_trace(PVR2_TRACE_INIT,"pvr_init");
 124
 125 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
 126         class_ptr = pvr2_sysfs_class_create();
 127 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
 128
 129         ret = usb_register(&pvr_driver);
 130
 131         if (ret == 0)
 132                 info(DRIVER_DESC " : " DRIVER_VERSION);
 133         if (pvrusb2_debug) info("Debug mask is %d (0x%x)",
 134                                 pvrusb2_debug,pvrusb2_debug);
 135
 136         return ret;
 137 }
 138
 139 static void __exit pvr_exit(void)
 140 {
 141
 142         pvr2_trace(PVR2_TRACE_INIT,"pvr_exit");
 143
 144 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
 145         pvr2_sysfs_class_destroy(class_ptr);
 146 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
 147
 148         usb_deregister(&pvr_driver);
 149 }
 150
 151 module_init(pvr_init);
 152 module_exit(pvr_exit);
 153
 154 /* Mike Isely <mcisely@pobox.com> 11-Mar-2006: See pvrusb2-hdw.c for
 155    MODULE_DEVICE_TABLE().  We have to declare that attribute there
 156    because that's where the device table actually is now and it seems
 157    that certain gcc configurations get angry if MODULE_DEVICE_TABLE()
 158    is used on what ends up being an external symbol. */
 159 MODULE_AUTHOR(DRIVER_AUTHOR);
 160 MODULE_DESCRIPTION(DRIVER_DESC);
 161 MODULE_LICENSE("GPL");
 162
 163
 164 /*
 165   Stuff for Emacs to see, in order to encourage consistent editing style:
 166   *** Local Variables: ***
 167   *** mode: c ***
 168   *** fill-column: 70 ***
 169   *** tab-width: 8 ***
 170   *** c-basic-offset: 8 ***
 171   *** End: ***
 172   */