sysfs.c
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/* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Authors:
* Alexander Aring <aar@pengutronix.de>
*
* Based on: net/wireless/sysfs.c
*/
#include <linux/device.h>
#include <linux/rtnetlink.h>
#include <net/cfg802154.h>
#include "core.h"
#include "sysfs.h"
#include "rdev-ops.h"
static inline struct cfg802154_registered_device *
dev_to_rdev(struct device *dev)
{
return container_of(dev, struct cfg802154_registered_device,
wpan_phy.dev);
}
#define SHOW_FMT(name, fmt, member) \
static ssize_t name ## _show(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member); \
} \
static DEVICE_ATTR_RO(name)
SHOW_FMT(index, "%d", wpan_phy_idx);
static ssize_t name_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct wpan_phy *wpan_phy = &dev_to_rdev(dev)->wpan_phy;
return sprintf(buf, "%s\n", dev_name(&wpan_phy->dev));
}
static DEVICE_ATTR_RO(name);
static void wpan_phy_release(struct device *dev)
{
struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
cfg802154_dev_free(rdev);
}
static struct attribute *pmib_attrs[] = {
&dev_attr_index.attr,
&dev_attr_name.attr,
NULL,
};
ATTRIBUTE_GROUPS(pmib);
#ifdef CONFIG_PM_SLEEP
static int wpan_phy_suspend(struct device *dev)
{
struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
int ret = 0;
if (rdev->ops->suspend) {
rtnl_lock();
ret = rdev_suspend(rdev);
rtnl_unlock();
}
return ret;
}
static int wpan_phy_resume(struct device *dev)
{
struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
int ret = 0;
if (rdev->ops->resume) {
rtnl_lock();
ret = rdev_resume(rdev);
rtnl_unlock();
}
return ret;
}
static SIMPLE_DEV_PM_OPS(wpan_phy_pm_ops, wpan_phy_suspend, wpan_phy_resume);
#define WPAN_PHY_PM_OPS (&wpan_phy_pm_ops)
#else
#define WPAN_PHY_PM_OPS NULL
#endif
struct class wpan_phy_class = {
.name = "ieee802154",
.dev_release = wpan_phy_release,
.dev_groups = pmib_groups,
.pm = WPAN_PHY_PM_OPS,
};
int wpan_phy_sysfs_init(void)
{
return class_register(&wpan_phy_class);
}
void wpan_phy_sysfs_exit(void)
{
class_unregister(&wpan_phy_class);
}