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/*
* Stuff used by all variants of the driver
*
* Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de>,
* 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 usb_interface *intf = to_usb_interface(dev);
struct cardstate *cs = usb_get_intfdata(intf);
return sprintf(buf, "%d\n", atomic_read(&cs->cidmode));
}
static ssize_t set_cidmode(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_interface *intf = to_usb_interface(dev);
struct cardstate *cs = usb_get_intfdata(intf);
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 (down_interruptible(&cs->sem))
return -ERESTARTSYS; // FIXME -EINTR?
cs->waiting = 1;
if (!gigaset_add_event(cs, &cs->at_state, EV_PROC_CIDMODE,
NULL, value, NULL)) {
cs->waiting = 0;
up(&cs->sem);
return -ENOMEM;
}
gig_dbg(DEBUG_CMD, "scheduling PROC_CIDMODE");
gigaset_schedule_event(cs);
wait_event(cs->waitqueue, !cs->waiting);
up(&cs->sem);
return count;
}
static DEVICE_ATTR(cidmode, S_IRUGO|S_IWUSR, show_cidmode, set_cidmode);
/* free sysfs for device */
void gigaset_free_dev_sysfs(struct usb_interface *interface)
{
gig_dbg(DEBUG_INIT, "removing sysfs entries");
device_remove_file(&interface->dev, &dev_attr_cidmode);
}
EXPORT_SYMBOL_GPL(gigaset_free_dev_sysfs);
/* initialize sysfs for device */
void gigaset_init_dev_sysfs(struct usb_interface *interface)
{
gig_dbg(DEBUG_INIT, "setting up sysfs");
device_create_file(&interface->dev, &dev_attr_cidmode);
}
EXPORT_SYMBOL_GPL(gigaset_init_dev_sysfs);
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