1/********************************************************************* 2 * 3 * Filename: esi.c 4 * Version: 1.6 5 * Description: Driver for the Extended Systems JetEye PC dongle 6 * Status: Experimental. 7 * Author: Dag Brattli <dagb@cs.uit.no> 8 * Created at: Sat Feb 21 18:54:38 1998 9 * Modified at: Sun Oct 27 22:01:04 2002 10 * Modified by: Martin Diehl <mad@mdiehl.de> 11 * 12 * Copyright (c) 1999 Dag Brattli, <dagb@cs.uit.no>, 13 * Copyright (c) 1998 Thomas Davis, <ratbert@radiks.net>, 14 * Copyright (c) 2002 Martin Diehl, <mad@mdiehl.de>, 15 * All Rights Reserved. 16 * 17 * This program is free software; you can redistribute it and/or 18 * modify it under the terms of the GNU General Public License as 19 * published by the Free Software Foundation; either version 2 of 20 * the License, or (at your option) any later version. 21 * 22 * This program is distributed in the hope that it will be useful, 23 * but WITHOUT ANY WARRANTY; without even the implied warranty of 24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 25 * GNU General Public License for more details. 26 * 27 * You should have received a copy of the GNU General Public License 28 * along with this program; if not, write to the Free Software 29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 30 * MA 02111-1307 USA 31 * 32 ********************************************************************/ 33 34#include <linux/module.h> 35#include <linux/delay.h> 36#include <linux/init.h> 37 38#include <net/irda/irda.h> 39 40#include "sir-dev.h" 41 42static int esi_open(struct sir_dev *); 43static int esi_close(struct sir_dev *); 44static int esi_change_speed(struct sir_dev *, unsigned); 45static int esi_reset(struct sir_dev *); 46 47static struct dongle_driver esi = { 48 .owner = THIS_MODULE, 49 .driver_name = "JetEye PC ESI-9680 PC", 50 .type = IRDA_ESI_DONGLE, 51 .open = esi_open, 52 .close = esi_close, 53 .reset = esi_reset, 54 .set_speed = esi_change_speed, 55}; 56 57static int __init esi_sir_init(void) 58{ 59 return irda_register_dongle(&esi); 60} 61 62static void __exit esi_sir_cleanup(void) 63{ 64 irda_unregister_dongle(&esi); 65} 66 67static int esi_open(struct sir_dev *dev) 68{ 69 struct qos_info *qos = &dev->qos; 70 71 /* Power up and set dongle to 9600 baud */ 72 sirdev_set_dtr_rts(dev, FALSE, TRUE); 73 74 qos->baud_rate.bits &= IR_9600|IR_19200|IR_115200; 75 qos->min_turn_time.bits = 0x01; /* Needs at least 10 ms */ 76 irda_qos_bits_to_value(qos); 77 78 /* irda thread waits 50 msec for power settling */ 79 80 return 0; 81} 82 83static int esi_close(struct sir_dev *dev) 84{ 85 /* Power off dongle */ 86 sirdev_set_dtr_rts(dev, FALSE, FALSE); 87 88 return 0; 89} 90 91/* 92 * Function esi_change_speed (task) 93 * 94 * Set the speed for the Extended Systems JetEye PC ESI-9680 type dongle 95 * Apparently (see old esi-driver) no delays are needed here... 96 * 97 */ 98static int esi_change_speed(struct sir_dev *dev, unsigned speed) 99{ 100 int ret = 0; 101 int dtr, rts; 102 103 switch (speed) { 104 case 19200: 105 dtr = TRUE; 106 rts = FALSE; 107 break; 108 case 115200: 109 dtr = rts = TRUE; 110 break; 111 default: 112 ret = -EINVAL; 113 speed = 9600; 114 /* fall through */ 115 case 9600: 116 dtr = FALSE; 117 rts = TRUE; 118 break; 119 } 120 121 /* Change speed of dongle */ 122 sirdev_set_dtr_rts(dev, dtr, rts); 123 dev->speed = speed; 124 125 return ret; 126} 127 128/* 129 * Function esi_reset (task) 130 * 131 * Reset dongle; 132 * 133 */ 134static int esi_reset(struct sir_dev *dev) 135{ 136 sirdev_set_dtr_rts(dev, FALSE, FALSE); 137 138 /* Hm, the old esi-driver left the dongle unpowered relying on 139 * the following speed change to repower. This might work for 140 * the esi because we only need the modem lines. However, now the 141 * general rule is reset must bring the dongle to some working 142 * well-known state because speed change might write to registers. 143 * The old esi-driver didn't any delay here - let's hope it' fine. 144 */ 145 146 sirdev_set_dtr_rts(dev, FALSE, TRUE); 147 dev->speed = 9600; 148 149 return 0; 150} 151 152MODULE_AUTHOR("Dag Brattli <dagb@cs.uit.no>"); 153MODULE_DESCRIPTION("Extended Systems JetEye PC dongle driver"); 154MODULE_LICENSE("GPL"); 155MODULE_ALIAS("irda-dongle-1"); /* IRDA_ESI_DONGLE */ 156 157module_init(esi_sir_init); 158module_exit(esi_sir_cleanup); 159 160