sysfs.c (2224B)
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}