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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, 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/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", __FUNCTION__);

        /* 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", __FUNCTION__);

        /* 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", __FUNCTION__);

        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", __FUNCTION__);

        /* 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);