mirror of https://gitee.com/openkylin/linux.git
78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
#include <linux/kernel.h>
|
|
#include <linux/stat.h>
|
|
#include <asm/macio.h>
|
|
|
|
|
|
#define macio_config_of_attr(field, format_string) \
|
|
static ssize_t \
|
|
field##_show (struct device *dev, struct device_attribute *attr, \
|
|
char *buf) \
|
|
{ \
|
|
struct macio_dev *mdev = to_macio_device (dev); \
|
|
return sprintf (buf, format_string, mdev->ofdev.node->field); \
|
|
}
|
|
|
|
static ssize_t
|
|
compatible_show (struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct of_device *of;
|
|
const char *compat;
|
|
int cplen;
|
|
int length = 0;
|
|
|
|
of = &to_macio_device (dev)->ofdev;
|
|
compat = of_get_property(of->node, "compatible", &cplen);
|
|
if (!compat) {
|
|
*buf = '\0';
|
|
return 0;
|
|
}
|
|
while (cplen > 0) {
|
|
int l;
|
|
length += sprintf (buf, "%s\n", compat);
|
|
buf += length;
|
|
l = strlen (compat) + 1;
|
|
compat += l;
|
|
cplen -= l;
|
|
}
|
|
|
|
return length;
|
|
}
|
|
|
|
static ssize_t modalias_show (struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct of_device *of;
|
|
const char *compat;
|
|
int cplen;
|
|
int length;
|
|
|
|
of = &to_macio_device (dev)->ofdev;
|
|
compat = of_get_property(of->node, "compatible", &cplen);
|
|
if (!compat) compat = "", cplen = 1;
|
|
length = sprintf (buf, "of:N%sT%s", of->node->name, of->node->type);
|
|
buf += length;
|
|
while (cplen > 0) {
|
|
int l;
|
|
l = sprintf (buf, "C%s", compat);
|
|
length += l;
|
|
buf += l;
|
|
l = strlen (compat) + 1;
|
|
compat += l;
|
|
cplen -= l;
|
|
}
|
|
length += sprintf(buf, "\n");
|
|
|
|
return length;
|
|
}
|
|
|
|
macio_config_of_attr (name, "%s\n");
|
|
macio_config_of_attr (type, "%s\n");
|
|
|
|
struct device_attribute macio_dev_attrs[] = {
|
|
__ATTR_RO(name),
|
|
__ATTR_RO(type),
|
|
__ATTR_RO(compatible),
|
|
__ATTR_RO(modalias),
|
|
__ATTR_NULL
|
|
};
|