err.no Git - linux-2.6/blob - 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                             PVR2_TRACE_FIRMWARE| \
  50                             PVR2_TRACE_EEPROM | \
  51                             PVR2_TRACE_INIT | \
  52                             PVR2_TRACE_I2C | \
  53                             PVR2_TRACE_CHIPS | \
  54                             PVR2_TRACE_START_STOP | \
  55                             PVR2_TRACE_CTL | \
  56                             PVR2_TRACE_DEBUGIFC | \
  57                             0)
  58
  59 int pvrusb2_debug = DEFAULT_DEBUG_MASK;
  60
  61 module_param_named(debug,pvrusb2_debug,int,S_IRUGO|S_IWUSR);
  62 MODULE_PARM_DESC(debug, "Debug trace mask");
  63
  64 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  65 static struct pvr2_sysfs_class *class_ptr = 0;
  66 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  67
  68 static void pvr_setup_attach(struct pvr2_context *pvr)
  69 {
  70         /* Create association with v4l layer */
  71         pvr2_v4l2_create(pvr);
  72 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
  73         pvr2_sysfs_create(pvr,class_ptr);
  74 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
  75 }
  76
  77 static int pvr_probe(struct usb_interface *intf,
  78                      const struct usb_device_id *devid)
  79 {
  80         struct pvr2_context *pvr;
  81
  82         /* Create underlying hardware interface */
  83         pvr = pvr2_context_create(intf,devid,pvr_setup_attach);
  84         if (!pvr) {
  85                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  86                            "Failed to create hdw handler");
  87                 return -ENOMEM;
  88         }
  89
  90         pvr2_trace(PVR2_TRACE_INIT,"pvr_probe(pvr=%p)",pvr);
  91
  92         usb_set_intfdata(intf, pvr);
  93
  94         return 0;
  95 }
  96
  97 /*
  98  * pvr_disconnect()
  99  *
 100  */
 101 static void pvr_disconnect(struct usb_interface *intf)
 102 {
 103         struct pvr2_context *pvr = usb_get_intfdata(intf);
 104
 105         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) BEGIN",pvr);
 106
 107         usb_set_intfdata (intf, NULL);
 108         pvr2_context_disconnect(pvr);
 109
 110         pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) DONE",pvr);
 111
 112 }
 113
 114 static struct usb_driver pvr_driver = {
 115         name:           "pvrusb2",
 116         id_table:       pvr2_device_table,
 117         probe:          pvr_probe,
 118         disconnect:     pvr_disconnect
 119 };
 120
 121 /*
 122  * pvr_init() / pvr_exit()
 123  *
 124  * This code is run to initialize/exit the driver.
 125  *
 126  */
 127 static int __init pvr_init(void)
 128 {
 129         int ret;
 130
 131         pvr2_trace(PVR2_TRACE_INIT,"pvr_init");
 132
 133 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
 134         class_ptr = pvr2_sysfs_class_create();
 135 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
 136
 137         ret = usb_register(&pvr_driver);
 138
 139         if (ret == 0)
 140                 info(DRIVER_DESC " : " DRIVER_VERSION);
 141         if (pvrusb2_debug) info("Debug mask is %d (0x%x)",
 142                                 pvrusb2_debug,pvrusb2_debug);
 143
 144         return ret;
 145 }
 146
 147 static void __exit pvr_exit(void)
 148 {
 149
 150         pvr2_trace(PVR2_TRACE_INIT,"pvr_exit");
 151
 152 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
 153         pvr2_sysfs_class_destroy(class_ptr);
 154 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
 155
 156         usb_deregister(&pvr_driver);
 157 }
 158
 159 module_init(pvr_init);
 160 module_exit(pvr_exit);
 161
 162 /* Mike Isely <mcisely@pobox.com> 11-Mar-2006: See pvrusb2-hdw.c for
 163    MODULE_DEVICE_TABLE().  We have to declare that attribute there
 164    because that's where the device table actually is now and it seems
 165    that certain gcc configurations get angry if MODULE_DEVICE_TABLE()
 166    is used on what ends up being an external symbol. */
 167 MODULE_AUTHOR(DRIVER_AUTHOR);
 168 MODULE_DESCRIPTION(DRIVER_DESC);
 169 MODULE_LICENSE("GPL");
 170
 171
 172 /*
 173   Stuff for Emacs to see, in order to encourage consistent editing style:
 174   *** Local Variables: ***
 175   *** mode: c ***
 176   *** fill-column: 70 ***
 177   *** tab-width: 8 ***
 178   *** c-basic-offset: 8 ***
 179   *** End: ***
 180   */