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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/irda/old_belkin.c
Linux-2.6.12-rc2v2.6.12-rc2
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!
Diffstat (limited to 'drivers/net/irda/old_belkin.c')
-rw-r--r--drivers/net/irda/old_belkin.c164
1 files changed, 164 insertions, 0 deletions
diff --git a/drivers/net/irda/old_belkin.c b/drivers/net/irda/old_belkin.c
new file mode 100644
index 000000000000..26f81fd28371
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+++ b/drivers/net/irda/old_belkin.c
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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/tty.h>
34#include <linux/init.h>
35
36#include <net/irda/irda.h>
37#include <net/irda/irda_device.h>
38
39/*
40 * Belkin is selling a dongle called the SmartBeam.
41 * In fact, there is two hardware version of this dongle, of course with
42 * the same name and looking the exactly same (grrr...).
43 * I guess that I've got the old one, because inside I don't have
44 * a jumper for IrDA/ASK...
45 *
46 * As far as I can make it from info on their web site, the old dongle
47 * support only 9600 b/s, which make our life much simpler as far as
48 * the driver is concerned, but you might not like it very much ;-)
49 * The new SmartBeam does 115 kb/s, and I've not tested it...
50 *
51 * Belkin claim that the correct driver for the old dongle (in Windows)
52 * is the generic Parallax 9500a driver, but the Linux LiteLink driver
53 * fails for me (probably because Linux-IrDA doesn't rate fallback),
54 * so I created this really dumb driver...
55 *
56 * In fact, this driver doesn't do much. The only thing it does is to
57 * prevent Linux-IrDA to use any other speed than 9600 b/s ;-) This
58 * driver is called "old_belkin" so that when the new SmartBeam is supported
59 * its driver can be called "belkin" instead of "new_belkin".
60 *
61 * Note : this driver was written without any info/help from Belkin,
62 * so a lot of info here might be totally wrong. Blame me ;-)
63 */
64
65/* Let's guess */
66#define MIN_DELAY 25 /* 15 us, but wait a little more to be sure */
67
68static void old_belkin_open(dongle_t *self, struct qos_info *qos);
69static void old_belkin_close(dongle_t *self);
70static int old_belkin_change_speed(struct irda_task *task);
71static int old_belkin_reset(struct irda_task *task);
72
73/* These are the baudrates supported */
74/* static __u32 baud_rates[] = { 9600 }; */
75
76static struct dongle_reg dongle = {
77 .type = IRDA_OLD_BELKIN_DONGLE,
78 .open = old_belkin_open,
79 .close = old_belkin_close,
80 .reset = old_belkin_reset,
81 .change_speed = old_belkin_change_speed,
82 .owner = THIS_MODULE,
83};
84
85static int __init old_belkin_init(void)
86{
87 return irda_device_register_dongle(&dongle);
88}
89
90static void __exit old_belkin_cleanup(void)
91{
92 irda_device_unregister_dongle(&dongle);
93}
94
95static void old_belkin_open(dongle_t *self, struct qos_info *qos)
96{
97 /* Not too fast, please... */
98 qos->baud_rate.bits &= IR_9600;
99 /* Needs at least 10 ms (totally wild guess, can do probably better) */
100 qos->min_turn_time.bits = 0x01;
101}
102
103static void old_belkin_close(dongle_t *self)
104{
105 /* Power off dongle */
106 self->set_dtr_rts(self->dev, FALSE, FALSE);
107}
108
109/*
110 * Function old_belkin_change_speed (task)
111 *
112 * With only one speed available, not much to do...
113 */
114static int old_belkin_change_speed(struct irda_task *task)
115{
116 irda_task_next_state(task, IRDA_TASK_DONE);
117
118 return 0;
119}
120
121/*
122 * Function old_belkin_reset (task)
123 *
124 * Reset the Old-Belkin type dongle.
125 *
126 */
127static int old_belkin_reset(struct irda_task *task)
128{
129 dongle_t *self = (dongle_t *) task->instance;
130
131 /* Power on dongle */
132 self->set_dtr_rts(self->dev, TRUE, TRUE);
133
134 /* Sleep a minimum of 15 us */
135 udelay(MIN_DELAY);
136
137 /* This dongles speed "defaults" to 9600 bps ;-) */
138 self->speed = 9600;
139
140 irda_task_next_state(task, IRDA_TASK_DONE);
141
142 return 0;
143}
144
145MODULE_AUTHOR("Jean Tourrilhes <jt@hpl.hp.com>");
146MODULE_DESCRIPTION("Belkin (old) SmartBeam dongle driver");
147MODULE_LICENSE("GPL");
148MODULE_ALIAS("irda-dongle-7"); /* IRDA_OLD_BELKIN_DONGLE */
149
150/*
151 * Function init_module (void)
152 *
153 * Initialize Old-Belkin module
154 *
155 */
156module_init(old_belkin_init);
157
158/*
159 * Function cleanup_module (void)
160 *
161 * Cleanup Old-Belkin module
162 *
163 */
164module_exit(old_belkin_cleanup);