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 *
dev_to_rdev(struct device * dev)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
name_show(struct device * dev,struct device_attribute * attr,char * buf)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
wpan_phy_release(struct device * dev)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
wpan_phy_suspend(struct device * dev)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
wpan_phy_resume(struct device * dev)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
wpan_phy_sysfs_init(void)103 int wpan_phy_sysfs_init(void)
104 {
105 return class_register(&wpan_phy_class);
106 }
107
wpan_phy_sysfs_exit(void)108 void wpan_phy_sysfs_exit(void)
109 {
110 class_unregister(&wpan_phy_class);
111 }
112