1/********************************************************************* 2 * 3 * Filename: old_belkin.c 4 * Version: 1.1 5 * Description: Driver for the Belkin (old) SmartBeam dongle 6 * Status: Experimental... 7 * Author: Jean Tourrilhes <jt@hpl.hp.com> 8 * Created at: 22/11/99 9 * Modified at: Fri Dec 17 09:13:32 1999 10 * Modified by: Dag Brattli <dagb@cs.uit.no> 11 * 12 * Copyright (c) 1999 Jean Tourrilhes, All Rights Reserved. 13 * 14 * This program is free software; you can redistribute it and/or 15 * modify it under the terms of the GNU General Public License as 16 * published by the Free Software Foundation; either version 2 of 17 * the License, or (at your option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 27 * MA 02111-1307 USA 28 * 29 ********************************************************************/ 30 31#include <linux/module.h> 32#include <linux/delay.h> 33#include <linux/init.h> 34 35#include <net/irda/irda.h> 36// #include <net/irda/irda_device.h> 37 38#include "sir-dev.h" 39 40/* 41 * Belkin is selling a dongle called the SmartBeam. 42 * In fact, there is two hardware version of this dongle, of course with 43 * the same name and looking the exactly same (grrr...). 44 * I guess that I've got the old one, because inside I don't have 45 * a jumper for IrDA/ASK... 46 * 47 * As far as I can make it from info on their web site, the old dongle 48 * support only 9600 b/s, which make our life much simpler as far as 49 * the driver is concerned, but you might not like it very much ;-) 50 * The new SmartBeam does 115 kb/s, and I've not tested it... 51 * 52 * Belkin claim that the correct driver for the old dongle (in Windows) 53 * is the generic Parallax 9500a driver, but the Linux LiteLink driver 54 * fails for me (probably because Linux-IrDA doesn't rate fallback), 55 * so I created this really dumb driver... 56 * 57 * In fact, this driver doesn't do much. The only thing it does is to 58 * prevent Linux-IrDA to use any other speed than 9600 b/s ;-) This 59 * driver is called "old_belkin" so that when the new SmartBeam is supported 60 * its driver can be called "belkin" instead of "new_belkin". 61 * 62 * Note : this driver was written without any info/help from Belkin, 63 * so a lot of info here might be totally wrong. Blame me ;-) 64 */ 65 66static int old_belkin_open(struct sir_dev *dev); 67static int old_belkin_close(struct sir_dev *dev); 68static int old_belkin_change_speed(struct sir_dev *dev, unsigned speed); 69static int old_belkin_reset(struct sir_dev *dev); 70 71static struct dongle_driver old_belkin = { 72 .owner = THIS_MODULE, 73 .driver_name = "Old Belkin SmartBeam", 74 .type = IRDA_OLD_BELKIN_DONGLE, 75 .open = old_belkin_open, 76 .close = old_belkin_close, 77 .reset = old_belkin_reset, 78 .set_speed = old_belkin_change_speed, 79}; 80 81static int __init old_belkin_sir_init(void) 82{ 83 return irda_register_dongle(&old_belkin); 84} 85 86static void __exit old_belkin_sir_cleanup(void) 87{ 88 irda_unregister_dongle(&old_belkin); 89} 90 91static int old_belkin_open(struct sir_dev *dev) 92{ 93 struct qos_info *qos = &dev->qos; 94 95 IRDA_DEBUG(2, "%s()\n", __func__); 96 97 /* Power on dongle */ 98 sirdev_set_dtr_rts(dev, TRUE, TRUE); 99 100 /* Not too fast, please... */ 101 qos->baud_rate.bits &= IR_9600; 102 /* Needs at least 10 ms (totally wild guess, can do probably better) */ 103 qos->min_turn_time.bits = 0x01; 104 irda_qos_bits_to_value(qos); 105 106 /* irda thread waits 50 msec for power settling */ 107 108 return 0; 109} 110 111static int old_belkin_close(struct sir_dev *dev) 112{ 113 IRDA_DEBUG(2, "%s()\n", __func__); 114 115 /* Power off dongle */ 116 sirdev_set_dtr_rts(dev, FALSE, FALSE); 117 118 return 0; 119} 120 121/* 122 * Function old_belkin_change_speed (task) 123 * 124 * With only one speed available, not much to do... 125 */ 126static int old_belkin_change_speed(struct sir_dev *dev, unsigned speed) 127{ 128 IRDA_DEBUG(2, "%s()\n", __func__); 129 130 dev->speed = 9600; 131 return (speed==dev->speed) ? 0 : -EINVAL; 132} 133 134/* 135 * Function old_belkin_reset (task) 136 * 137 * Reset the Old-Belkin type dongle. 138 * 139 */ 140static int old_belkin_reset(struct sir_dev *dev) 141{ 142 IRDA_DEBUG(2, "%s()\n", __func__); 143 144 /* This dongles speed "defaults" to 9600 bps ;-) */ 145 dev->speed = 9600; 146 147 return 0; 148} 149 150MODULE_AUTHOR("Jean Tourrilhes <jt@hpl.hp.com>"); 151MODULE_DESCRIPTION("Belkin (old) SmartBeam dongle driver"); 152MODULE_LICENSE("GPL"); 153MODULE_ALIAS("irda-dongle-7"); /* IRDA_OLD_BELKIN_DONGLE */ 154 155module_init(old_belkin_sir_init); 156module_exit(old_belkin_sir_cleanup); 157