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1// SPDX-License-Identifier: GPL-2.0
2#include <linux/kernel.h>
3#include <linux/of.h>
4#include <linux/of_device.h>
5#include <linux/stat.h>
6#include <asm/macio.h>
7
8static ssize_t
9compatible_show (struct device *dev, struct device_attribute *attr, char *buf)
10{
11 struct platform_device *of;
12 const char *compat;
13 int cplen;
14 int length = 0;
15
16 of = &to_macio_device (dev)->ofdev;
17 compat = of_get_property(of->dev.of_node, "compatible", &cplen);
18 if (!compat) {
19 *buf = '\0';
20 return 0;
21 }
22 while (cplen > 0) {
23 int l;
24 length += sprintf (buf, "%s\n", compat);
25 buf += length;
26 l = strlen (compat) + 1;
27 compat += l;
28 cplen -= l;
29 }
30
31 return length;
32}
33static DEVICE_ATTR_RO(compatible);
34
35static ssize_t modalias_show (struct device *dev, struct device_attribute *attr,
36 char *buf)
37{
38 return of_device_modalias(dev, buf, PAGE_SIZE);
39}
40
41static ssize_t devspec_show(struct device *dev,
42 struct device_attribute *attr, char *buf)
43{
44 struct platform_device *ofdev;
45
46 ofdev = to_platform_device(dev);
47 return sprintf(buf, "%pOF\n", ofdev->dev.of_node);
48}
49static DEVICE_ATTR_RO(modalias);
50static DEVICE_ATTR_RO(devspec);
51
52static ssize_t name_show(struct device *dev,
53 struct device_attribute *attr, char *buf)
54{
55 return sprintf(buf, "%pOFn\n", dev->of_node);
56}
57static DEVICE_ATTR_RO(name);
58
59static ssize_t type_show(struct device *dev,
60 struct device_attribute *attr, char *buf)
61{
62 return sprintf(buf, "%s\n", of_node_get_device_type(dev->of_node));
63}
64static DEVICE_ATTR_RO(type);
65
66static struct attribute *macio_dev_attrs[] = {
67 &dev_attr_name.attr,
68 &dev_attr_type.attr,
69 &dev_attr_compatible.attr,
70 &dev_attr_modalias.attr,
71 &dev_attr_devspec.attr,
72 NULL,
73};
74
75static const struct attribute_group macio_dev_group = {
76 .attrs = macio_dev_attrs,
77};
78
79const struct attribute_group *macio_dev_groups[] = {
80 &macio_dev_group,
81 NULL,
82};