LXR linux/net/ieee802154/sysfs.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *
   4 * Authors:
   5 * Alexander Aring <aar@pengutronix.de>
   6 *
   7 * Based on: net/wireless/sysfs.c
   8 */
   9
  10#include <linux/device.h>
  11#include <linux/rtnetlink.h>
  12
  13#include <net/cfg802154.h>
  14
  15#include "core.h"
  16#include "sysfs.h"
  17#include "rdev-ops.h"
  18
  19static inline struct cfg802154_registered_device *
  20dev_to_rdev(struct device *dev)
  21{
  22        return container_of(dev, struct cfg802154_registered_device,
  23                            wpan_phy.dev);
  24}
  25
  26#define SHOW_FMT(name, fmt, member)                                     \
  27static ssize_t name ## _show(struct device *dev,                        \
  28                             struct device_attribute *attr,             \
  29                             char *buf)                                 \
  30{                                                                       \
  31        return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member);        \
  32}                                                                       \
  33static DEVICE_ATTR_RO(name)
  34
  35SHOW_FMT(index, "%d", wpan_phy_idx);
  36
  37static ssize_t name_show(struct device *dev,
  38                         struct device_attribute *attr,
  39                         char *buf)
  40{
  41        struct wpan_phy *wpan_phy = &dev_to_rdev(dev)->wpan_phy;
  42
  43        return sprintf(buf, "%s\n", dev_name(&wpan_phy->dev));
  44}
  45static DEVICE_ATTR_RO(name);
  46
  47static void wpan_phy_release(struct device *dev)
  48{
  49        struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
  50
  51        cfg802154_dev_free(rdev);
  52}
  53
  54static struct attribute *pmib_attrs[] = {
  55        &dev_attr_index.attr,
  56        &dev_attr_name.attr,
  57        NULL,
  58};
  59ATTRIBUTE_GROUPS(pmib);
  60
  61#ifdef CONFIG_PM_SLEEP
  62static int wpan_phy_suspend(struct device *dev)
  63{
  64        struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
  65        int ret = 0;
  66
  67        if (rdev->ops->suspend) {
  68                rtnl_lock();
  69                ret = rdev_suspend(rdev);
  70                rtnl_unlock();
  71        }
  72
  73        return ret;
  74}
  75
  76static int wpan_phy_resume(struct device *dev)
  77{
  78        struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
  79        int ret = 0;
  80
  81        if (rdev->ops->resume) {
  82                rtnl_lock();
  83                ret = rdev_resume(rdev);
  84                rtnl_unlock();
  85        }
  86
  87        return ret;
  88}
  89
  90static SIMPLE_DEV_PM_OPS(wpan_phy_pm_ops, wpan_phy_suspend, wpan_phy_resume);
  91#define WPAN_PHY_PM_OPS (&wpan_phy_pm_ops)
  92#else
  93#define WPAN_PHY_PM_OPS NULL
  94#endif
  95
  96struct class wpan_phy_class = {
  97        .name = "ieee802154",
  98        .dev_release = wpan_phy_release,
  99        .dev_groups = pmib_groups,
 100        .pm = WPAN_PHY_PM_OPS,
 101};
 102
 103int wpan_phy_sysfs_init(void)
 104{
 105        return class_register(&wpan_phy_class);
 106}
 107
 108void wpan_phy_sysfs_exit(void)
 109{
 110        class_unregister(&wpan_phy_class);
 111}
 112