release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/media/video/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  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include <linux/kernel.h>
  23 #include <linux/errno.h>
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/videodev2.h>
  27
  28 #include "pvrusb2-hdw.h"
  29 #include "pvrusb2-devattr.h"
  30 #include "pvrusb2-context.h"
  31 #include "pvrusb2-debug.h"
  32 #include "pvrusb2-v4l2.h"
  33 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  34 #include "pvrusb2-sysfs.h"
  35 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  36
  37 #define DRIVER_AUTHOR "Mike Isely <isely@pobox.com>"
  38 #define DRIVER_DESC "Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner"
  39 #define DRIVER_VERSION "V4L in-tree version"
  40
  41 #define DEFAULT_DEBUG_MASK (PVR2_TRACE_ERROR_LEGS| \
  42                             PVR2_TRACE_INFO| \
  43                             PVR2_TRACE_STD| \
  44                             PVR2_TRACE_TOLERANCE| \
  45                             PVR2_TRACE_TRAP| \
  46                             0)
  47
  48 int pvrusb2_debug = DEFAULT_DEBUG_MASK;
  49
  50 module_param_named(debug,pvrusb2_debug,int,S_IRUGO|S_IWUSR);
  51 MODULE_PARM_DESC(debug, "Debug trace mask");
  52
  53 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  54 static struct pvr2_sysfs_class *class_ptr = NULL;
  55 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  56
  57 static void pvr_setup_attach(struct pvr2_context *pvr)
  58 {
  59         /* Create association with v4l layer */
  60         pvr2_v4l2_create(pvr);
  61 #ifdef CONFIG_VIDEO_PVRUSB2_DVB
  62         /* Create association with dvb layer */
  63         pvr2_dvb_create(pvr);
  64 #endif
  65 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  66         pvr2_sysfs_create(pvr,class_ptr);
  67 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  68 }
  69
  70 static int pvr_probe(struct usb_interface *intf,
  71                      const struct usb_device_id *devid)
  72 {
  73         struct pvr2_context *pvr;
  74
  75         /* Create underlying hardware interface */
  76         pvr = pvr2_context_create(intf,devid,pvr_setup_attach);
  77         if (!pvr) {
  78                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  79                            "Failed to create hdw handler");
  80                 return -ENOMEM;
  81         }
  82
  83         pvr2_trace(PVR2_TRACE_INIT,"pvr_probe(pvr=%p)",pvr);
  84
  85         usb_set_intfdata(intf, pvr);
  86
  87         return 0;
  88 }
  89
  90 /*
  91  * pvr_disconnect()
  92  *
  93  */
  94 static void pvr_disconnect(struct usb_interface *intf)
  95 {
  96         struct pvr2_context *pvr = usb_get_intfdata(intf);
  97
  98         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) BEGIN",pvr);
  99
 100         usb_set_intfdata (intf, NULL);
 101         pvr2_context_disconnect(pvr);
 102
 103         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) DONE",pvr);
 104
 105 }
 106
 107 static struct usb_driver pvr_driver = {
 108         .name =         "pvrusb2",
 109         .id_table =     pvr2_device_table,
 110         .probe =        pvr_probe,
 111         .disconnect =   pvr_disconnect
 112 };
 113
 114 /*
 115  * pvr_init() / pvr_exit()
 116  *
 117  * This code is run to initialize/exit the driver.
 118  *
 119  */
 120 static int __init pvr_init(void)
 121 {
 122         int ret;
 123
 124         pvr2_trace(PVR2_TRACE_INIT,"pvr_init");
 125
 126         ret = pvr2_context_global_init();
 127         if (ret != 0) {
 128                 pvr2_trace(PVR2_TRACE_INIT,"pvr_init failure code=%d",ret);
 129                 return ret;
 130         }
 131
 132 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
 133         class_ptr = pvr2_sysfs_class_create();
 134 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
 135
 136         ret = usb_register(&pvr_driver);
 137
 138         if (ret == 0)
 139                 printk(KERN_INFO "pvrusb2: " DRIVER_VERSION ":"
 140                        DRIVER_DESC "\n");
 141         if (pvrusb2_debug)
 142                 printk(KERN_INFO "pvrusb2: Debug mask is %d (0x%x)\n",
 143                        pvrusb2_debug,pvrusb2_debug);
 144
 145         pvr2_trace(PVR2_TRACE_INIT,"pvr_init complete");
 146
 147         return ret;
 148 }
 149
 150 static void __exit pvr_exit(void)
 151 {
 152         pvr2_trace(PVR2_TRACE_INIT,"pvr_exit");
 153
 154         usb_deregister(&pvr_driver);
 155
 156         pvr2_context_global_done();
 157
 158 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
 159         pvr2_sysfs_class_destroy(class_ptr);
 160 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
 161
 162         pvr2_trace(PVR2_TRACE_INIT,"pvr_exit complete");
 163 }
 164
 165 module_init(pvr_init);
 166 module_exit(pvr_exit);
 167
 168 MODULE_AUTHOR(DRIVER_AUTHOR);
 169 MODULE_DESCRIPTION(DRIVER_DESC);
 170 MODULE_LICENSE("GPL");
 171
 172
 173 /*
 174   Stuff for Emacs to see, in order to encourage consistent editing style:
 175   *** Local Variables: ***
 176   *** mode: c ***
 177   *** fill-column: 70 ***
 178   *** tab-width: 8 ***
 179   *** c-basic-offset: 8 ***
 180   *** End: ***
 181   */