tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#include <linux/kernel.h>
2#include <linux/stat.h>
3#include <asm/macio.h>
4
5
6#define macio_config_of_attr(field, format_string) \
7static ssize_t \
8field##_show (struct device *dev, struct device_attribute *attr, \
9 char *buf) \
10{ \
11 struct macio_dev *mdev = to_macio_device (dev); \
12 return sprintf (buf, format_string, mdev->ofdev.node->field); \
13}
14
15static ssize_t
16compatible_show (struct device *dev, struct device_attribute *attr, char *buf)
17{
18 struct of_device *of;
19 const char *compat;
20 int cplen;
21 int length = 0;
22
23 of = &to_macio_device (dev)->ofdev;
24 compat = get_property(of->node, "compatible", &cplen);
25 if (!compat) {
26 *buf = '\0';
27 return 0;
28 }
29 while (cplen > 0) {
30 int l;
31 length += sprintf (buf, "%s\n", compat);
32 buf += length;
33 l = strlen (compat) + 1;
34 compat += l;
35 cplen -= l;
36 }
37
38 return length;
39}
40
41static ssize_t modalias_show (struct device *dev, struct device_attribute *attr,
42 char *buf)
43{
44 struct of_device *of;
45 const char *compat;
46 int cplen;
47 int length;
48
49 of = &to_macio_device (dev)->ofdev;
50 compat = get_property(of->node, "compatible", &cplen);
51 if (!compat) compat = "", cplen = 1;
52 length = sprintf (buf, "of:N%sT%s", of->node->name, of->node->type);
53 buf += length;
54 while (cplen > 0) {
55 int l;
56 length += sprintf (buf, "C%s", compat);
57 buf += length;
58 l = strlen (compat) + 1;
59 compat += l;
60 cplen -= l;
61 }
62
63 return length;
64}
65
66macio_config_of_attr (name, "%s\n");
67macio_config_of_attr (type, "%s\n");
68
69struct device_attribute macio_dev_attrs[] = {
70 __ATTR_RO(name),
71 __ATTR_RO(type),
72 __ATTR_RO(compatible),
73 __ATTR_RO(modalias),
74 __ATTR_NULL
75};