diff options
Diffstat (limited to 'drivers/staging/dgrp/dgrp_driver.c')
| -rw-r--r-- | drivers/staging/dgrp/dgrp_driver.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/staging/dgrp/dgrp_driver.c b/drivers/staging/dgrp/dgrp_driver.c new file mode 100644 index 000000000000..6e4a0ebc0749 --- /dev/null +++ b/drivers/staging/dgrp/dgrp_driver.c @@ -0,0 +1,110 @@ +/* + * + * Copyright 1999-2003 Digi International (www.digi.com) + * Jeff Randall + * James Puzzo <jamesp at digi dot com> + * Scott Kilau <Scott_Kilau at digi dot com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the + * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR + * PURPOSE. See the GNU General Public License for more details. + * + */ + +/* + * Driver specific includes + */ +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/tty.h> +#include <linux/init.h> + +/* + * PortServer includes + */ +#include "dgrp_common.h" + + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Digi International, http://www.digi.com"); +MODULE_DESCRIPTION("RealPort driver for Digi's ethernet-based serial connectivity product line"); +MODULE_VERSION(DIGI_VERSION); + +struct list_head nd_struct_list; +struct dgrp_poll_data dgrp_poll_data; + +int dgrp_rawreadok = 1; /* Bypass flipbuf on input */ +int dgrp_register_cudevices = 1;/* Turn on/off registering legacy cu devices */ +int dgrp_register_prdevices = 1;/* Turn on/off registering transparent print */ +int dgrp_poll_tick = 20; /* Poll interval - in ms */ + +module_param_named(rawreadok, dgrp_rawreadok, int, 0644); +MODULE_PARM_DESC(rawreadok, "Bypass flip buffers on input"); + +module_param_named(register_cudevices, dgrp_register_cudevices, int, 0644); +MODULE_PARM_DESC(register_cudevices, "Turn on/off registering legacy cu devices"); + +module_param_named(register_prdevices, dgrp_register_prdevices, int, 0644); +MODULE_PARM_DESC(register_prdevices, "Turn on/off registering transparent print devices"); + +module_param_named(pollrate, dgrp_poll_tick, int, 0644); +MODULE_PARM_DESC(pollrate, "Poll interval in ms"); + +/* Driver load/unload functions */ +static int dgrp_init_module(void); +static void dgrp_cleanup_module(void); + +module_init(dgrp_init_module); +module_exit(dgrp_cleanup_module); + +/* + * init_module() + * + * Module load. This is where it all starts. + */ +static int dgrp_init_module(void) +{ + INIT_LIST_HEAD(&nd_struct_list); + + spin_lock_init(&dgrp_poll_data.poll_lock); + init_timer(&dgrp_poll_data.timer); + dgrp_poll_data.poll_tick = dgrp_poll_tick; + dgrp_poll_data.timer.function = dgrp_poll_handler; + dgrp_poll_data.timer.data = (unsigned long) &dgrp_poll_data; + + dgrp_create_class_sysfs_files(); + + dgrp_register_proc(); + + return 0; +} + + +/* + * Module unload. This is where it all ends. + */ +static void dgrp_cleanup_module(void) +{ + struct nd_struct *nd, *next; + + /* + * Attempting to free resources in backwards + * order of allocation, in case that helps + * memory pool fragmentation. + */ + dgrp_unregister_proc(); + + dgrp_remove_class_sysfs_files(); + + + list_for_each_entry_safe(nd, next, &nd_struct_list, list) { + dgrp_tty_uninit(nd); + kfree(nd); + } +} |