kernel/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
  18 #include <net/cfg802154.h>
  19
  20 #include "core.h"
  21 #include "sysfs.h"
  22
  23 static inline struct cfg802154_registered_device *
  24 dev_to_rdev(struct device *dev)
  25 {
  26         return container_of(dev, struct cfg802154_registered_device,
  27                             wpan_phy.dev);
  28 }
  29
  30 #define SHOW_FMT(name, fmt, member)                                     \
  31 static ssize_t name ## _show(struct device *dev,                        \
  32                              struct device_attribute *attr,             \
  33                              char *buf)                                 \
  34 {                                                                       \
  35         return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member);        \
  36 }                                                                       \
  37 static DEVICE_ATTR_RO(name)
  38
  39 SHOW_FMT(index, "%d", wpan_phy_idx);
  40
  41 static ssize_t name_show(struct device *dev,
  42                          struct device_attribute *attr,
  43                          char *buf)
  44 {
  45         struct wpan_phy *wpan_phy = &dev_to_rdev(dev)->wpan_phy;
  46
  47         return sprintf(buf, "%s\n", dev_name(&wpan_phy->dev));
  48 }
  49 static DEVICE_ATTR_RO(name);
  50
  51 static void wpan_phy_release(struct device *dev)
  52 {
  53         struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
  54
  55         cfg802154_dev_free(rdev);
  56 }
  57
  58 static struct attribute *pmib_attrs[] = {
  59         &dev_attr_index.attr,
  60         &dev_attr_name.attr,
  61         NULL,
  62 };
  63 ATTRIBUTE_GROUPS(pmib);
  64
  65 struct class wpan_phy_class = {
  66         .name = "ieee802154",
  67         .dev_release = wpan_phy_release,
  68         .dev_groups = pmib_groups,
  69 };
  70
  71 int wpan_phy_sysfs_init(void)
  72 {
  73         return class_register(&wpan_phy_class);
  74 }
  75
  76 void wpan_phy_sysfs_exit(void)
  77 {
  78         class_unregister(&wpan_phy_class);
  79 }