LXR linux/net/ieee802154/sysfs.c

   1/* This program is free software; you can redistribute it and/or modify
   2 * it under the terms of the GNU General Public License version 2
   3 * as published by the Free Software Foundation.
   4 *
   5 * This program is distributed in the hope that it will be useful,
   6 * but WITHOUT ANY WARRANTY; without even the implied warranty of
   7 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   8 * GNU General Public License for more details.
   9 *
  10 * Authors:
  11 * Alexander Aring <aar@pengutronix.de>
  12 *
  13 * Based on: net/wireless/sysfs.c
  14 */
  15
  16#include <linux/device.h>
  17#include <linux/rtnetlink.h>
  18
  19#include <net/cfg802154.h>
  20
  21#include "core.h"
  22#include "sysfs.h"
  23#include "rdev-ops.h"
  24
  25static inline struct cfg802154_registered_device *
  26dev_to_rdev(struct device *dev)
  27{
  28        return container_of(dev, struct cfg802154_registered_device,
  29                            wpan_phy.dev);
  30}
  31
  32#define SHOW_FMT(name, fmt, member)                                     \
  33static ssize_t name ## _show(struct device *dev,                        \
  34                             struct device_attribute *attr,             \
  35                             char *buf)                                 \
  36{                                                                       \
  37        return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member);        \
  38}                                                                       \
  39static DEVICE_ATTR_RO(name)
  40
  41SHOW_FMT(index, "%d", wpan_phy_idx);
  42
  43static ssize_t name_show(struct device *dev,
  44                         struct device_attribute *attr,
  45                         char *buf)
  46{
  47        struct wpan_phy *wpan_phy = &dev_to_rdev(dev)->wpan_phy;
  48
  49        return sprintf(buf, "%s\n", dev_name(&wpan_phy->dev));
  50}
  51static DEVICE_ATTR_RO(name);
  52
  53static void wpan_phy_release(struct device *dev)
  54{
  55        struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
  56
  57        cfg802154_dev_free(rdev);
  58}
  59
  60static struct attribute *pmib_attrs[] = {
  61        &dev_attr_index.attr,
  62        &dev_attr_name.attr,
  63        NULL,
  64};
  65ATTRIBUTE_GROUPS(pmib);
  66
  67#ifdef CONFIG_PM_SLEEP
  68static int wpan_phy_suspend(struct device *dev)
  69{
  70        struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
  71        int ret = 0;
  72
  73        if (rdev->ops->suspend) {
  74                rtnl_lock();
  75                ret = rdev_suspend(rdev);
  76                rtnl_unlock();
  77        }
  78
  79        return ret;
  80}
  81
  82static int wpan_phy_resume(struct device *dev)
  83{
  84        struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
  85        int ret = 0;
  86
  87        if (rdev->ops->resume) {
  88                rtnl_lock();
  89                ret = rdev_resume(rdev);
  90                rtnl_unlock();
  91        }
  92
  93        return ret;
  94}
  95
  96static SIMPLE_DEV_PM_OPS(wpan_phy_pm_ops, wpan_phy_suspend, wpan_phy_resume);
  97#define WPAN_PHY_PM_OPS (&wpan_phy_pm_ops)
  98#else
  99#define WPAN_PHY_PM_OPS NULL
 100#endif
 101
 102struct class wpan_phy_class = {
 103        .name = "ieee802154",
 104        .dev_release = wpan_phy_release,
 105        .dev_groups = pmib_groups,
 106        .pm = WPAN_PHY_PM_OPS,
 107};
 108
 109int wpan_phy_sysfs_init(void)
 110{
 111        return class_register(&wpan_phy_class);
 112}
 113
 114void wpan_phy_sysfs_exit(void)
 115{
 116        class_unregister(&wpan_phy_class);
 117}
 118