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/*********************************************************************
*
* 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, see <http://www.gnu.org/licenses/>.
*
********************************************************************/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <net/irda/irda.h>
// #include <net/irda/irda_device.h>
#include "sir-dev.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 ;-)
*/
static int old_belkin_open(struct sir_dev *dev);
static int old_belkin_close(struct sir_dev *dev);
static int old_belkin_change_speed(struct sir_dev *dev, unsigned speed);
static int old_belkin_reset(struct sir_dev *dev);
static struct dongle_driver old_belkin = {
.owner = THIS_MODULE,
.driver_name = "Old Belkin SmartBeam",
.type = IRDA_OLD_BELKIN_DONGLE,
.open = old_belkin_open,
.close = old_belkin_close,
.reset = old_belkin_reset,
.set_speed = old_belkin_change_speed,
};
static int __init old_belkin_sir_init(void)
{
return irda_register_dongle(&old_belkin);
}
static void __exit old_belkin_sir_cleanup(void)
{
irda_unregister_dongle(&old_belkin);
}
static int old_belkin_open(struct sir_dev *dev)
{
struct qos_info *qos = &dev->qos;
IRDA_DEBUG(2, "%s()\n", __func__);
/* Power on dongle */
sirdev_set_dtr_rts(dev, TRUE, TRUE);
/* 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;
irda_qos_bits_to_value(qos);
/* irda thread waits 50 msec for power settling */
return 0;
}
static int old_belkin_close(struct sir_dev *dev)
{
IRDA_DEBUG(2, "%s()\n", __func__);
/* Power off dongle */
sirdev_set_dtr_rts(dev, FALSE, FALSE);
return 0;
}
/*
* Function old_belkin_change_speed (task)
*
* With only one speed available, not much to do...
*/
static int old_belkin_change_speed(struct sir_dev *dev, unsigned speed)
{
IRDA_DEBUG(2, "%s()\n", __func__);
dev->speed = 9600;
return (speed==dev->speed) ? 0 : -EINVAL;
}
/*
* Function old_belkin_reset (task)
*
* Reset the Old-Belkin type dongle.
*
*/
static int old_belkin_reset(struct sir_dev *dev)
{
IRDA_DEBUG(2, "%s()\n", __func__);
/* This dongles speed "defaults" to 9600 bps ;-) */
dev->speed = 9600;
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 */
module_init(old_belkin_sir_init);
module_exit(old_belkin_sir_cleanup);
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