165 lines
4.9 KiB
C
165 lines
4.9 KiB
C
/*********************************************************************
|
|
*
|
|
* Filename: old_belkin.c
|
|
* Version: 1.1
|
|
* Description: Driver for the Belkin (old) SmartBeam dongle
|
|
* Status: Experimental...
|
|
* Author: Jean Tourrilhes <jt@hpl.hp.com>
|
|
* Created at: 22/11/99
|
|
* Modified at: Fri Dec 17 09:13:32 1999
|
|
* Modified by: Dag Brattli <dagb@cs.uit.no>
|
|
*
|
|
* Copyright (c) 1999 Jean Tourrilhes, All Rights Reserved.
|
|
*
|
|
* 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 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*
|
|
********************************************************************/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <net/irda/irda.h>
|
|
#include <net/irda/irda_device.h>
|
|
|
|
/*
|
|
* Belkin is selling a dongle called the SmartBeam.
|
|
* In fact, there is two hardware version of this dongle, of course with
|
|
* the same name and looking the exactly same (grrr...).
|
|
* I guess that I've got the old one, because inside I don't have
|
|
* a jumper for IrDA/ASK...
|
|
*
|
|
* As far as I can make it from info on their web site, the old dongle
|
|
* support only 9600 b/s, which make our life much simpler as far as
|
|
* the driver is concerned, but you might not like it very much ;-)
|
|
* The new SmartBeam does 115 kb/s, and I've not tested it...
|
|
*
|
|
* Belkin claim that the correct driver for the old dongle (in Windows)
|
|
* is the generic Parallax 9500a driver, but the Linux LiteLink driver
|
|
* fails for me (probably because Linux-IrDA doesn't rate fallback),
|
|
* so I created this really dumb driver...
|
|
*
|
|
* In fact, this driver doesn't do much. The only thing it does is to
|
|
* prevent Linux-IrDA to use any other speed than 9600 b/s ;-) This
|
|
* driver is called "old_belkin" so that when the new SmartBeam is supported
|
|
* its driver can be called "belkin" instead of "new_belkin".
|
|
*
|
|
* Note : this driver was written without any info/help from Belkin,
|
|
* so a lot of info here might be totally wrong. Blame me ;-)
|
|
*/
|
|
|
|
/* Let's guess */
|
|
#define MIN_DELAY 25 /* 15 us, but wait a little more to be sure */
|
|
|
|
static void old_belkin_open(dongle_t *self, struct qos_info *qos);
|
|
static void old_belkin_close(dongle_t *self);
|
|
static int old_belkin_change_speed(struct irda_task *task);
|
|
static int old_belkin_reset(struct irda_task *task);
|
|
|
|
/* These are the baudrates supported */
|
|
/* static __u32 baud_rates[] = { 9600 }; */
|
|
|
|
static struct dongle_reg dongle = {
|
|
.type = IRDA_OLD_BELKIN_DONGLE,
|
|
.open = old_belkin_open,
|
|
.close = old_belkin_close,
|
|
.reset = old_belkin_reset,
|
|
.change_speed = old_belkin_change_speed,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static int __init old_belkin_init(void)
|
|
{
|
|
return irda_device_register_dongle(&dongle);
|
|
}
|
|
|
|
static void __exit old_belkin_cleanup(void)
|
|
{
|
|
irda_device_unregister_dongle(&dongle);
|
|
}
|
|
|
|
static void old_belkin_open(dongle_t *self, struct qos_info *qos)
|
|
{
|
|
/* Not too fast, please... */
|
|
qos->baud_rate.bits &= IR_9600;
|
|
/* Needs at least 10 ms (totally wild guess, can do probably better) */
|
|
qos->min_turn_time.bits = 0x01;
|
|
}
|
|
|
|
static void old_belkin_close(dongle_t *self)
|
|
{
|
|
/* Power off dongle */
|
|
self->set_dtr_rts(self->dev, FALSE, FALSE);
|
|
}
|
|
|
|
/*
|
|
* Function old_belkin_change_speed (task)
|
|
*
|
|
* With only one speed available, not much to do...
|
|
*/
|
|
static int old_belkin_change_speed(struct irda_task *task)
|
|
{
|
|
irda_task_next_state(task, IRDA_TASK_DONE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Function old_belkin_reset (task)
|
|
*
|
|
* Reset the Old-Belkin type dongle.
|
|
*
|
|
*/
|
|
static int old_belkin_reset(struct irda_task *task)
|
|
{
|
|
dongle_t *self = (dongle_t *) task->instance;
|
|
|
|
/* Power on dongle */
|
|
self->set_dtr_rts(self->dev, TRUE, TRUE);
|
|
|
|
/* Sleep a minimum of 15 us */
|
|
udelay(MIN_DELAY);
|
|
|
|
/* This dongles speed "defaults" to 9600 bps ;-) */
|
|
self->speed = 9600;
|
|
|
|
irda_task_next_state(task, IRDA_TASK_DONE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
MODULE_AUTHOR("Jean Tourrilhes <jt@hpl.hp.com>");
|
|
MODULE_DESCRIPTION("Belkin (old) SmartBeam dongle driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("irda-dongle-7"); /* IRDA_OLD_BELKIN_DONGLE */
|
|
|
|
/*
|
|
* Function init_module (void)
|
|
*
|
|
* Initialize Old-Belkin module
|
|
*
|
|
*/
|
|
module_init(old_belkin_init);
|
|
|
|
/*
|
|
* Function cleanup_module (void)
|
|
*
|
|
* Cleanup Old-Belkin module
|
|
*
|
|
*/
|
|
module_exit(old_belkin_cleanup);
|