Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | /********************************************************************* * * 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); |