forked from Minki/linux
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
160 lines
4.0 KiB
C
160 lines
4.0 KiB
C
/*********************************************************************
|
|
*
|
|
* Filename: esi.c
|
|
* Version: 1.6
|
|
* Description: Driver for the Extended Systems JetEye PC dongle
|
|
* Status: Experimental.
|
|
* Author: Dag Brattli <dagb@cs.uit.no>
|
|
* Created at: Sat Feb 21 18:54:38 1998
|
|
* Modified at: Sun Oct 27 22:01:04 2002
|
|
* Modified by: Martin Diehl <mad@mdiehl.de>
|
|
*
|
|
* Copyright (c) 1999 Dag Brattli, <dagb@cs.uit.no>,
|
|
* Copyright (c) 1998 Thomas Davis, <ratbert@radiks.net>,
|
|
* Copyright (c) 2002 Martin Diehl, <mad@mdiehl.de>,
|
|
* 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 "sir-dev.h"
|
|
|
|
static int esi_open(struct sir_dev *);
|
|
static int esi_close(struct sir_dev *);
|
|
static int esi_change_speed(struct sir_dev *, unsigned);
|
|
static int esi_reset(struct sir_dev *);
|
|
|
|
static struct dongle_driver esi = {
|
|
.owner = THIS_MODULE,
|
|
.driver_name = "JetEye PC ESI-9680 PC",
|
|
.type = IRDA_ESI_DONGLE,
|
|
.open = esi_open,
|
|
.close = esi_close,
|
|
.reset = esi_reset,
|
|
.set_speed = esi_change_speed,
|
|
};
|
|
|
|
static int __init esi_sir_init(void)
|
|
{
|
|
return irda_register_dongle(&esi);
|
|
}
|
|
|
|
static void __exit esi_sir_cleanup(void)
|
|
{
|
|
irda_unregister_dongle(&esi);
|
|
}
|
|
|
|
static int esi_open(struct sir_dev *dev)
|
|
{
|
|
struct qos_info *qos = &dev->qos;
|
|
|
|
/* Power up and set dongle to 9600 baud */
|
|
sirdev_set_dtr_rts(dev, FALSE, TRUE);
|
|
|
|
qos->baud_rate.bits &= IR_9600|IR_19200|IR_115200;
|
|
qos->min_turn_time.bits = 0x01; /* Needs at least 10 ms */
|
|
irda_qos_bits_to_value(qos);
|
|
|
|
/* irda thread waits 50 msec for power settling */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int esi_close(struct sir_dev *dev)
|
|
{
|
|
/* Power off dongle */
|
|
sirdev_set_dtr_rts(dev, FALSE, FALSE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Function esi_change_speed (task)
|
|
*
|
|
* Set the speed for the Extended Systems JetEye PC ESI-9680 type dongle
|
|
* Apparently (see old esi-driver) no delays are needed here...
|
|
*
|
|
*/
|
|
static int esi_change_speed(struct sir_dev *dev, unsigned speed)
|
|
{
|
|
int ret = 0;
|
|
int dtr, rts;
|
|
|
|
switch (speed) {
|
|
case 19200:
|
|
dtr = TRUE;
|
|
rts = FALSE;
|
|
break;
|
|
case 115200:
|
|
dtr = rts = TRUE;
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
speed = 9600;
|
|
/* fall through */
|
|
case 9600:
|
|
dtr = FALSE;
|
|
rts = TRUE;
|
|
break;
|
|
}
|
|
|
|
/* Change speed of dongle */
|
|
sirdev_set_dtr_rts(dev, dtr, rts);
|
|
dev->speed = speed;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Function esi_reset (task)
|
|
*
|
|
* Reset dongle;
|
|
*
|
|
*/
|
|
static int esi_reset(struct sir_dev *dev)
|
|
{
|
|
sirdev_set_dtr_rts(dev, FALSE, FALSE);
|
|
|
|
/* Hm, the old esi-driver left the dongle unpowered relying on
|
|
* the following speed change to repower. This might work for
|
|
* the esi because we only need the modem lines. However, now the
|
|
* general rule is reset must bring the dongle to some working
|
|
* well-known state because speed change might write to registers.
|
|
* The old esi-driver didn't any delay here - let's hope it' fine.
|
|
*/
|
|
|
|
sirdev_set_dtr_rts(dev, FALSE, TRUE);
|
|
dev->speed = 9600;
|
|
|
|
return 0;
|
|
}
|
|
|
|
MODULE_AUTHOR("Dag Brattli <dagb@cs.uit.no>");
|
|
MODULE_DESCRIPTION("Extended Systems JetEye PC dongle driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("irda-dongle-1"); /* IRDA_ESI_DONGLE */
|
|
|
|
module_init(esi_sir_init);
|
|
module_exit(esi_sir_cleanup);
|
|
|