File: esi.c

package info (click to toggle)
kernel-source-sparc-2.2.1 2.2.1
  • links: PTS
  • area: main
  • in suites: slink
  • size: 62,800 kB
  • ctags: 188,320
  • sloc: ansic: 1,114,164; asm: 49,922; makefile: 8,272; sh: 1,831; perl: 1,584; tcl: 409; lisp: 218; cpp: 186; awk: 133; sed: 72
file content (194 lines) | stat: -rw-r--r-- 4,304 bytes parent folder | download | duplicates (2)
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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
/*********************************************************************
 *                
 * Filename:      esi.c
 * Version:       1.1
 * Description:   Driver for the Extended Systems JetEye PC
 * Status:        Experimental.
 * Author:        Thomas Davis, <ratbert@radiks.net>
 * Created at:    Sat Feb 21 18:54:38 1998
 * Modified at:   Mon Jan 18 11:30:32 1999
 * Modified by:   Dag Brattli <dagb@cs.uit.no>
 * Sources:	  esi.c
 *
 *     Copyright (c) 1998, Thomas Davis, <ratbert@radiks.net>,
 *     Copyright (c) 1998, Dag Brattli,  <dagb@cs.uit.no>
 *     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.
 *
 *     I, Thomas Davis, provide no warranty for any of this software.
 *     This material is provided "AS-IS" and at no charge.
 *
 ********************************************************************/

#include <linux/module.h>

#include <linux/delay.h>
#include <linux/tty.h>
#include <linux/sched.h>
#include <linux/init.h>

#include <asm/ioctls.h>
#include <asm/segment.h>
#include <asm/uaccess.h>

#include <net/irda/irda.h>
#include <net/irda/irmod.h>
#include <net/irda/irda_device.h>
#include <net/irda/irtty.h>
#include <net/irda/dongle.h>

static void esi_open( struct irda_device *idev, int type);
static void esi_close( struct irda_device *driver);
static void esi_change_speed( struct irda_device *idev, int baud);
static void esi_reset( struct irda_device *idev, int unused);
static void esi_qos_init( struct irda_device *idev, struct qos_info *qos);

static struct dongle dongle = {
	ESI_DONGLE,
	esi_open,
	esi_close,
	esi_reset,
	esi_change_speed,
	esi_qos_init,
};

__initfunc(void esi_init(void))
{
	irtty_register_dongle( &dongle);
}

void esi_cleanup(void)
{
	irtty_unregister_dongle( &dongle);
}

static void esi_open( struct irda_device *idev, int type)
{
	strcat( idev->description, " <-> esi");

	idev->io.dongle_id = type;

	MOD_INC_USE_COUNT;
}

static void esi_close( struct irda_device *driver)
{
	MOD_DEC_USE_COUNT;
}

/*
 * Function esi_change_speed (tty, baud)
 *
 *    Set the speed for the Extended Systems JetEye PC ESI-9680 type dongle
 *
 */
static void esi_change_speed( struct irda_device *idev, int baud)
{
	struct irtty_cb *self;
	struct tty_struct *tty;
	int arg = TIOCM_OUT2;
        struct termios old_termios;
	int cflag;
	mm_segment_t fs;
	
	ASSERT( idev != NULL, return;);
	ASSERT( idev->magic == IRDA_DEVICE_MAGIC, return;);
	
	self = (struct irtty_cb *) idev->priv;
	
	ASSERT( self != NULL, return;);
	ASSERT( self->magic == IRTTY_MAGIC, return;);

	if ( !self->tty)
		return;

	tty = self->tty;
	
	old_termios = *(tty->termios);
	cflag = tty->termios->c_cflag;

	cflag &= ~CBAUD;

	switch (baud) {
	case 19200:
		cflag |= B19200;
		arg |= TIOCM_DTR;
		break;
	case 115200:
		cflag |= B115200;
		arg |= TIOCM_RTS | TIOCM_DTR;
		break;
	case 9600:
	default:
		cflag |= B9600;
		arg |= TIOCM_RTS;
		break;
	}
		
	tty->termios->c_cflag = cflag;
	tty->driver.set_termios( tty, &old_termios);

	/*
	 *  The ioctl function, or actually set_modem_info in serial.c
	 *  expects a pointer to the argument in user space. To hack us
	 *  around this we use the set_fs function to fool the routines 
	 *  that check if they are called from user space. We also need 
	 *  to send a pointer to the argument so get_user() gets happy. 
	 *  DB.
	 */
	fs = get_fs();
	set_fs( get_ds());

	if ( tty->driver.ioctl( tty, NULL, TIOCMSET, (unsigned long) &arg)) { 
		DEBUG( 0, __FUNCTION__ "(), error setting ESI speed!\n");
	}
	set_fs(fs);
}

static void esi_reset( struct irda_device *idev, int unused)
{
	/* Empty */
}

/*
 * Function esi_qos_init (qos)
 *
 *    Init QoS capabilities for the dongle
 *
 */
static void esi_qos_init( struct irda_device *idev, struct qos_info *qos)
{
	qos->baud_rate.bits &= IR_9600|IR_19200|IR_115200;
}

#ifdef MODULE
		
/*
 * Function init_module (void)
 *
 *    Initialize ESI module
 *
 */
int init_module(void)
{
	esi_init();
	return(0);
}

/*
 * Function cleanup_module (void)
 *
 *    Cleanup ESI module
 *
 */
void cleanup_module(void)
{
        esi_cleanup();
}

#endif