1/* $Id divert_init.c,v 1.5.6.2 2001/01/24 22:18:17 kai Exp $
2 *
3 * Module init for DSS1 diversion services for i4l.
4 *
5 * Copyright 1999       by Werner Cornelius (werner@isdn4linux.de)
6 *
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
9 *
10 */
11
12#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/kernel.h>
15
16#include "isdn_divert.h"
17
18MODULE_DESCRIPTION("ISDN4Linux: Call diversion support");
19MODULE_AUTHOR("Werner Cornelius");
20MODULE_LICENSE("GPL");
21
22/****************************************/
23/* structure containing interface to hl */
24/****************************************/
25isdn_divert_if divert_if =
26  { DIVERT_IF_MAGIC,  /* magic value */
27    DIVERT_CMD_REG,   /* register cmd */
28    ll_callback,      /* callback routine from ll */
29    NULL,             /* command still not specified */
30    NULL,             /* drv_to_name */
31    NULL,             /* name_to_drv */
32  };
33
34/*************************/
35/* Module interface code */
36/* no cmd line parms     */
37/*************************/
38static int __init divert_init(void)
39{ int i;
40
41  if (divert_dev_init())
42   { printk(KERN_WARNING "dss1_divert: cannot install device, not loaded\n");
43     return(-EIO);
44   }
45  if ((i = DIVERT_REG_NAME(&divert_if)) != DIVERT_NO_ERR)
46   { divert_dev_deinit();
47     printk(KERN_WARNING "dss1_divert: error %d registering module, not loaded\n",i);
48     return(-EIO);
49   }
50  printk(KERN_INFO "dss1_divert module successfully installed\n");
51  return(0);
52}
53
54/**********************/
55/* Module deinit code */
56/**********************/
57static void __exit divert_exit(void)
58{
59  unsigned long flags;
60  int i;
61
62  spin_lock_irqsave(&divert_lock, flags);
63  divert_if.cmd = DIVERT_CMD_REL; /* release */
64  if ((i = DIVERT_REG_NAME(&divert_if)) != DIVERT_NO_ERR)
65   { printk(KERN_WARNING "dss1_divert: error %d releasing module\n",i);
66     spin_unlock_irqrestore(&divert_lock, flags);
67     return;
68   }
69  if (divert_dev_deinit())
70   { printk(KERN_WARNING "dss1_divert: device busy, remove cancelled\n");
71     spin_unlock_irqrestore(&divert_lock, flags);
72     return;
73   }
74  spin_unlock_irqrestore(&divert_lock, flags);
75  deleterule(-1); /* delete all rules and free mem */
76  deleteprocs();
77  printk(KERN_INFO "dss1_divert module successfully removed \n");
78}
79
80module_init(divert_init);
81module_exit(divert_exit);
82