xref: /kernel/linux/linux-6.6/net/ieee802154/sysfs.c (revision 62306a36) 
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