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/version.h>
14#include <linux/init.h>
15#include "isdn_divert.h"
16
17MODULE_DESCRIPTION("ISDN4Linux: Call diversion support");
18MODULE_AUTHOR("Werner Cornelius");
19MODULE_LICENSE("GPL");
20
21/********************/
22/* needed externals */
23/********************/
24extern int printk(const char *fmt,...);
25
26/****************************************/
27/* structure containing interface to hl */
28/****************************************/
29isdn_divert_if divert_if =
30  { DIVERT_IF_MAGIC,  /* magic value */
31    DIVERT_CMD_REG,   /* register cmd */
32    ll_callback,      /* callback routine from ll */
33    NULL,             /* command still not specified */
34    NULL,             /* drv_to_name */
35    NULL,             /* name_to_drv */
36  };
37
38/*************************/
39/* Module interface code */
40/* no cmd line parms     */
41/*************************/
42static int __init divert_init(void)
43{ int i;
44
45  if (divert_dev_init())
46   { printk(KERN_WARNING "dss1_divert: cannot install device, not loaded\n");
47     return(-EIO);
48   }
49  if ((i = DIVERT_REG_NAME(&divert_if)) != DIVERT_NO_ERR)
50   { divert_dev_deinit();
51     printk(KERN_WARNING "dss1_divert: error %d registering module, not loaded\n",i);
52     return(-EIO);
53   }
54#if (LINUX_VERSION_CODE < 0x020111)
55  register_symtab(0);
56#endif
57  printk(KERN_INFO "dss1_divert module successfully installed\n");
58  return(0);
59}
60
61/**********************/
62/* Module deinit code */
63/**********************/
64static void __exit divert_exit(void)
65{ unsigned long flags;
66  int i;
67
68  save_flags(flags);
69  cli();
70  divert_if.cmd = DIVERT_CMD_REL; /* release */
71  if ((i = DIVERT_REG_NAME(&divert_if)) != DIVERT_NO_ERR)
72   { printk(KERN_WARNING "dss1_divert: error %d releasing module\n",i);
73     restore_flags(flags);
74     return;
75   }
76  if (divert_dev_deinit())
77   { printk(KERN_WARNING "dss1_divert: device busy, remove cancelled\n");
78     restore_flags(flags);
79     return;
80   }
81  restore_flags(flags);
82  deleterule(-1); /* delete all rules and free mem */
83  deleteprocs();
84  printk(KERN_INFO "dss1_divert module successfully removed \n");
85}
86
87module_init(divert_init);
88module_exit(divert_exit);
89
90