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 19 static inline struct cfg802154_registered_device * 20 dev_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) \ 27 static 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 } \ 33 static DEVICE_ATTR_RO(name) 34 35 SHOW_FMT(index, "%d", wpan_phy_idx); 36 37 static 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 } 45 static DEVICE_ATTR_RO(name); 46 47 static 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 54 static struct attribute *pmib_attrs[] = { 55 &dev_attr_index.attr, 56 &dev_attr_name.attr, 57 NULL, 58 }; 59 ATTRIBUTE_GROUPS(pmib); 60 61 #ifdef CONFIG_PM_SLEEP 62 static 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 76 static 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 90 static 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 96 struct 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 }; 102 103 int wpan_phy_sysfs_init(void) 104 { 105 return class_register(&wpan_phy_class); 106 } 107 108 void wpan_phy_sysfs_exit(void) 109 { 110 class_unregister(&wpan_phy_class); 111 } 112