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 
8 static ssize_t
9 compatible_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 }
33 static DEVICE_ATTR_RO(compatible);
34 
35 static 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 
41 static 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 }
49 static DEVICE_ATTR_RO(modalias);
50 static DEVICE_ATTR_RO(devspec);
51 
52 static 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 }
57 static DEVICE_ATTR_RO(name);
58 
59 static 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 }
64 static DEVICE_ATTR_RO(type);
65 
66 static 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 
75 static const struct attribute_group macio_dev_group = {
76 	.attrs = macio_dev_attrs,
77 };
78 
79 const struct attribute_group *macio_dev_groups[] = {
80 	&macio_dev_group,
81 	NULL,
82 };
83