Bill Pemberton | 0b52b74 | 2012-09-20 16:55:27 -0400 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright 1999-2003 Digi International (www.digi.com) |
| 4 | * Jeff Randall |
| 5 | * James Puzzo <jamesp at digi dot com> |
| 6 | * Scott Kilau <Scott_Kilau at digi dot com> |
| 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, or (at your option) |
| 11 | * any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the |
| 15 | * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
| 16 | * PURPOSE. See the GNU General Public License for more details. |
| 17 | * |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * Driver specific includes |
| 22 | */ |
| 23 | #include <linux/module.h> |
| 24 | #include <linux/slab.h> |
| 25 | #include <linux/tty.h> |
| 26 | #include <linux/init.h> |
| 27 | |
| 28 | /* |
| 29 | * PortServer includes |
| 30 | */ |
| 31 | #include "dgrp_common.h" |
| 32 | |
| 33 | |
| 34 | MODULE_LICENSE("GPL"); |
| 35 | MODULE_AUTHOR("Digi International, http://www.digi.com"); |
| 36 | MODULE_DESCRIPTION("RealPort driver for Digi's ethernet-based serial connectivity product line"); |
| 37 | MODULE_VERSION(DIGI_VERSION); |
| 38 | |
| 39 | struct list_head nd_struct_list; |
| 40 | struct dgrp_poll_data dgrp_poll_data; |
| 41 | |
| 42 | int dgrp_rawreadok = 1; /* Bypass flipbuf on input */ |
| 43 | int dgrp_register_cudevices = 1;/* Turn on/off registering legacy cu devices */ |
| 44 | int dgrp_register_prdevices = 1;/* Turn on/off registering transparent print */ |
| 45 | int dgrp_poll_tick = 20; /* Poll interval - in ms */ |
| 46 | |
| 47 | module_param_named(rawreadok, dgrp_rawreadok, int, 0644); |
| 48 | MODULE_PARM_DESC(rawreadok, "Bypass flip buffers on input"); |
| 49 | |
| 50 | module_param_named(register_cudevices, dgrp_register_cudevices, int, 0644); |
| 51 | MODULE_PARM_DESC(register_cudevices, "Turn on/off registering legacy cu devices"); |
| 52 | |
| 53 | module_param_named(register_prdevices, dgrp_register_prdevices, int, 0644); |
| 54 | MODULE_PARM_DESC(register_prdevices, "Turn on/off registering transparent print devices"); |
| 55 | |
| 56 | module_param_named(pollrate, dgrp_poll_tick, int, 0644); |
| 57 | MODULE_PARM_DESC(pollrate, "Poll interval in ms"); |
| 58 | |
| 59 | /* Driver load/unload functions */ |
| 60 | static int dgrp_init_module(void); |
| 61 | static void dgrp_cleanup_module(void); |
| 62 | |
| 63 | module_init(dgrp_init_module); |
| 64 | module_exit(dgrp_cleanup_module); |
| 65 | |
| 66 | /* |
| 67 | * init_module() |
| 68 | * |
| 69 | * Module load. This is where it all starts. |
| 70 | */ |
| 71 | static int dgrp_init_module(void) |
| 72 | { |
| 73 | INIT_LIST_HEAD(&nd_struct_list); |
| 74 | |
| 75 | spin_lock_init(&dgrp_poll_data.poll_lock); |
| 76 | init_timer(&dgrp_poll_data.timer); |
| 77 | dgrp_poll_data.poll_tick = dgrp_poll_tick; |
| 78 | dgrp_poll_data.timer.function = dgrp_poll_handler; |
| 79 | dgrp_poll_data.timer.data = (unsigned long) &dgrp_poll_data; |
| 80 | |
| 81 | dgrp_create_class_sysfs_files(); |
| 82 | |
| 83 | dgrp_register_proc(); |
| 84 | |
| 85 | return 0; |
| 86 | } |
| 87 | |
| 88 | |
| 89 | /* |
| 90 | * Module unload. This is where it all ends. |
| 91 | */ |
| 92 | static void dgrp_cleanup_module(void) |
| 93 | { |
| 94 | struct nd_struct *nd, *next; |
| 95 | |
| 96 | /* |
| 97 | * Attempting to free resources in backwards |
| 98 | * order of allocation, in case that helps |
| 99 | * memory pool fragmentation. |
| 100 | */ |
| 101 | dgrp_unregister_proc(); |
| 102 | |
| 103 | dgrp_remove_class_sysfs_files(); |
| 104 | |
| 105 | |
| 106 | list_for_each_entry_safe(nd, next, &nd_struct_list, list) { |
| 107 | dgrp_tty_uninit(nd); |
| 108 | kfree(nd); |
| 109 | } |
| 110 | } |