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157 lines
4.0 KiB
157 lines
4.0 KiB
/********************************************************************* |
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* |
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* Filename: esi.c |
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* Version: 1.6 |
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* Description: Driver for the Extended Systems JetEye PC dongle |
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* Status: Experimental. |
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* Author: Dag Brattli <dagb@cs.uit.no> |
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* Created at: Sat Feb 21 18:54:38 1998 |
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* Modified at: Sun Oct 27 22:01:04 2002 |
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* Modified by: Martin Diehl <mad@mdiehl.de> |
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* |
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* Copyright (c) 1999 Dag Brattli, <dagb@cs.uit.no>, |
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* Copyright (c) 1998 Thomas Davis, <ratbert@radiks.net>, |
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* Copyright (c) 2002 Martin Diehl, <mad@mdiehl.de>, |
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* All Rights Reserved. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, see <http://www.gnu.org/licenses/>. |
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* |
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********************************************************************/ |
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#include <linux/module.h> |
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#include <linux/delay.h> |
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#include <linux/init.h> |
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#include <net/irda/irda.h> |
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#include "sir-dev.h" |
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static int esi_open(struct sir_dev *); |
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static int esi_close(struct sir_dev *); |
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static int esi_change_speed(struct sir_dev *, unsigned); |
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static int esi_reset(struct sir_dev *); |
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static struct dongle_driver esi = { |
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.owner = THIS_MODULE, |
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.driver_name = "JetEye PC ESI-9680 PC", |
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.type = IRDA_ESI_DONGLE, |
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.open = esi_open, |
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.close = esi_close, |
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.reset = esi_reset, |
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.set_speed = esi_change_speed, |
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}; |
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static int __init esi_sir_init(void) |
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{ |
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return irda_register_dongle(&esi); |
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} |
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static void __exit esi_sir_cleanup(void) |
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{ |
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irda_unregister_dongle(&esi); |
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} |
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static int esi_open(struct sir_dev *dev) |
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{ |
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struct qos_info *qos = &dev->qos; |
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/* Power up and set dongle to 9600 baud */ |
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sirdev_set_dtr_rts(dev, FALSE, TRUE); |
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qos->baud_rate.bits &= IR_9600|IR_19200|IR_115200; |
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qos->min_turn_time.bits = 0x01; /* Needs at least 10 ms */ |
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irda_qos_bits_to_value(qos); |
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/* irda thread waits 50 msec for power settling */ |
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return 0; |
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} |
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static int esi_close(struct sir_dev *dev) |
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{ |
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/* Power off dongle */ |
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sirdev_set_dtr_rts(dev, FALSE, FALSE); |
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return 0; |
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} |
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/* |
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* Function esi_change_speed (task) |
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* |
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* Set the speed for the Extended Systems JetEye PC ESI-9680 type dongle |
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* Apparently (see old esi-driver) no delays are needed here... |
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* |
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*/ |
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static int esi_change_speed(struct sir_dev *dev, unsigned speed) |
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{ |
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int ret = 0; |
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int dtr, rts; |
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switch (speed) { |
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case 19200: |
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dtr = TRUE; |
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rts = FALSE; |
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break; |
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case 115200: |
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dtr = rts = TRUE; |
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break; |
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default: |
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ret = -EINVAL; |
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speed = 9600; |
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/* fall through */ |
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case 9600: |
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dtr = FALSE; |
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rts = TRUE; |
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break; |
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} |
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/* Change speed of dongle */ |
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sirdev_set_dtr_rts(dev, dtr, rts); |
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dev->speed = speed; |
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return ret; |
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} |
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/* |
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* Function esi_reset (task) |
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* |
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* Reset dongle; |
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* |
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*/ |
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static int esi_reset(struct sir_dev *dev) |
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{ |
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sirdev_set_dtr_rts(dev, FALSE, FALSE); |
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/* Hm, the old esi-driver left the dongle unpowered relying on |
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* the following speed change to repower. This might work for |
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* the esi because we only need the modem lines. However, now the |
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* general rule is reset must bring the dongle to some working |
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* well-known state because speed change might write to registers. |
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* The old esi-driver didn't any delay here - let's hope it' fine. |
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*/ |
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sirdev_set_dtr_rts(dev, FALSE, TRUE); |
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dev->speed = 9600; |
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return 0; |
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} |
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MODULE_AUTHOR("Dag Brattli <dagb@cs.uit.no>"); |
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MODULE_DESCRIPTION("Extended Systems JetEye PC dongle driver"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("irda-dongle-1"); /* IRDA_ESI_DONGLE */ |
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module_init(esi_sir_init); |
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module_exit(esi_sir_cleanup); |
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