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, fmt: "%s\n" , dev_name(dev: &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(class: &wpan_phy_class); |
106 | } |
107 | |
108 | void wpan_phy_sysfs_exit(void) |
109 | { |
110 | class_unregister(class: &wpan_phy_class); |
111 | } |
112 | |