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
|
/*
* Stuff used by all variants of the driver
*
* Copyright (c) 2001 by Stefan Eilers,
* Hansjoerg Lipp <hjlipp@web.de>,
* Tilman Schmidt <tilman@imap.cc>.
*
* =====================================================================
* 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.
* =====================================================================
*/
#include "gigaset.h"
#include <linux/ctype.h>
static ssize_t show_cidmode(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct cardstate *cs = dev_get_drvdata(dev);
return sprintf(buf, "%u\n", cs->cidmode);
}
static ssize_t set_cidmode(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct cardstate *cs = dev_get_drvdata(dev);
long int value;
char *end;
value = simple_strtol(buf, &end, 0);
while (*end)
if (!isspace(*end++))
return -EINVAL;
if (value < 0 || value > 1)
return -EINVAL;
if (mutex_lock_interruptible(&cs->mutex))
return -ERESTARTSYS; // FIXME -EINTR?
cs->waiting = 1;
if (!gigaset_add_event(cs, &cs->at_state, EV_PROC_CIDMODE,
NULL, value, NULL)) {
cs->waiting = 0;
mutex_unlock(&cs->mutex);
return -ENOMEM;
}
gig_dbg(DEBUG_CMD, "scheduling PROC_CIDMODE");
gigaset_schedule_event(cs);
wait_event(cs->waitqueue, !cs->waiting);
mutex_unlock(&cs->mutex);
return count;
}
static DEVICE_ATTR(cidmode, S_IRUGO|S_IWUSR, show_cidmode, set_cidmode);
/* free sysfs for device */
void gigaset_free_dev_sysfs(struct cardstate *cs)
{
if (!cs->tty_dev)
return;
gig_dbg(DEBUG_INIT, "removing sysfs entries");
device_remove_file(cs->tty_dev, &dev_attr_cidmode);
}
/* initialize sysfs for device */
void gigaset_init_dev_sysfs(struct cardstate *cs)
{
if (!cs->tty_dev)
return;
gig_dbg(DEBUG_INIT, "setting up sysfs");
if (device_create_file(cs->tty_dev, &dev_attr_cidmode))
pr_err("could not create sysfs attribute\n");
}
|
