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