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drivers/macintosh/macio_sysfs.c
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// SPDX-License-Identifier: GPL-2.0
#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.dev.of_node->field); \
} \
static DEVICE_ATTR_RO(field);
static ssize_t
compatible_show (struct device *dev, struct device_attribute *attr, char *buf)
{
struct platform_device *of;
const char *compat;
int cplen;
int length = 0;
of = &to_macio_device (dev)->ofdev;
compat = of_get_property(of->dev.of_node, "compatible", &cplen);
if (!compat) {
*buf = '\0';
return 0;
}
while (cplen > 0) {
int l;
length += sprintf (buf, "%s
", compat);
buf += length;
l = strlen (compat) + 1;
compat += l;
cplen -= l;
}
return length;
}
static DEVICE_ATTR_RO(compatible);
static ssize_t modalias_show (struct device *dev, struct device_attribute *attr,
char *buf)
{
return of_device_modalias(dev, buf, PAGE_SIZE);
}
static ssize_t devspec_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct platform_device *ofdev;
ofdev = to_platform_device(dev);
return sprintf(buf, "%pOF
", ofdev->dev.of_node);
}
static DEVICE_ATTR_RO(modalias);
static DEVICE_ATTR_RO(devspec);
macio_config_of_attr (name, "%s
");
macio_config_of_attr (type, "%s
");
static struct attribute *macio_dev_attrs[] = {
&dev_attr_name.attr,
&dev_attr_type.attr,
&dev_attr_compatible.attr,
&dev_attr_modalias.attr,
&dev_attr_devspec.attr,
NULL,
};
static const struct attribute_group macio_dev_group = {
.attrs = macio_dev_attrs,
};
const struct attribute_group *macio_dev_groups[] = {
&macio_dev_group,
NULL,
};
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