1/*********************************************************************
2 *
3 * Filename:      esi.c
4 * Version:       1.5
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:   Fri Dec 17 09:14:04 1999
10 * Modified by:   Dag Brattli <dagb@cs.uit.no>
11 *
12 *     Copyright (c) 1999 Dag Brattli, <dagb@cs.uit.no>,
13 *     Copyright (c) 1998 Thomas Davis, <ratbert@radiks.net>,
14 *     All Rights Reserved.
15 *
16 *     This program is free software; you can redistribute it and/or
17 *     modify it under the terms of the GNU General Public License as
18 *     published by the Free Software Foundation; either version 2 of
19 *     the License, or (at your option) any later version.
20 *
21 *     This program is distributed in the hope that it will be useful,
22 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
23 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 *     GNU General Public License for more details.
25 *
26 *     You should have received a copy of the GNU General Public License
27 *     along with this program; if not, write to the Free Software
28 *     Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 *     MA 02111-1307 USA
30 *
31 ********************************************************************/
32
33#include <linux/module.h>
34
35#include <linux/delay.h>
36#include <linux/tty.h>
37#include <linux/sched.h>
38#include <linux/init.h>
39
40#include <net/irda/irda.h>
41#include <net/irda/irmod.h>
42#include <net/irda/irda_device.h>
43
44static void esi_open(dongle_t *self, struct qos_info *qos);
45static void esi_close(dongle_t *self);
46static int  esi_change_speed(struct irda_task *task);
47static int  esi_reset(struct irda_task *task);
48
49static struct dongle_reg dongle = {
50	Q_NULL,
51	IRDA_ESI_DONGLE,
52	esi_open,
53	esi_close,
54	esi_reset,
55	esi_change_speed,
56};
57
58int __init esi_init(void)
59{
60	return irda_device_register_dongle(&dongle);
61}
62
63void esi_cleanup(void)
64{
65	irda_device_unregister_dongle(&dongle);
66}
67
68static void esi_open(dongle_t *self, struct qos_info *qos)
69{
70	qos->baud_rate.bits &= IR_9600|IR_19200|IR_115200;
71	qos->min_turn_time.bits = 0x01; /* Needs at least 10 ms */
72
73	MOD_INC_USE_COUNT;
74}
75
76static void esi_close(dongle_t *dongle)
77{
78	/* Power off dongle */
79	dongle->set_dtr_rts(dongle->dev, FALSE, FALSE);
80
81	MOD_DEC_USE_COUNT;
82}
83
84/*
85 * Function esi_change_speed (task)
86 *
87 *    Set the speed for the Extended Systems JetEye PC ESI-9680 type dongle
88 *
89 */
90static int esi_change_speed(struct irda_task *task)
91{
92	dongle_t *self = (dongle_t *) task->instance;
93	__u32 speed = (__u32) task->param;
94	int dtr, rts;
95
96	switch (speed) {
97	case 19200:
98		dtr = TRUE;
99		rts = FALSE;
100		break;
101	case 115200:
102		dtr = rts = TRUE;
103		break;
104	case 9600:
105	default:
106		dtr = FALSE;
107		rts = TRUE;
108		break;
109	}
110
111	/* Change speed of dongle */
112	self->set_dtr_rts(self->dev, dtr, rts);
113	self->speed = speed;
114
115	irda_task_next_state(task, IRDA_TASK_DONE);
116
117	return 0;
118}
119
120/*
121 * Function esi_reset (task)
122 *
123 *    Reset dongle;
124 *
125 */
126static int esi_reset(struct irda_task *task)
127{
128	dongle_t *self = (dongle_t *) task->instance;
129
130	self->set_dtr_rts(self->dev, FALSE, FALSE);
131	irda_task_next_state(task, IRDA_TASK_DONE);
132
133	return 0;
134}
135
136#ifdef MODULE
137MODULE_AUTHOR("Dag Brattli <dagb@cs.uit.no>");
138MODULE_DESCRIPTION("Extended Systems JetEye PC dongle driver");
139MODULE_LICENSE("GPL");
140
141/*
142 * Function init_module (void)
143 *
144 *    Initialize ESI module
145 *
146 */
147int init_module(void)
148{
149	return esi_init();
150}
151
152/*
153 * Function cleanup_module (void)
154 *
155 *    Cleanup ESI module
156 *
157 */
158void cleanup_module(void)
159{
160        esi_cleanup();
161}
162#endif /* MODULE */
163
164