140b932f8c
Create /sys/bus/of_platform/devices/*/modalias file to allow autoloading of modules. Modalias files are already present for many other bus types. This adds also a newline to the devspec files. Also create a devspec file for mac-io devices. They were created as a side effect. Use correct buffer size for mac-io modalias buffer. Tested on iBook1 and Efika. Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
74 lines
1.6 KiB
C
74 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 *ofdev = to_of_device(dev);
|
|
int len;
|
|
|
|
len = of_device_get_modalias(ofdev, buf, PAGE_SIZE - 2);
|
|
|
|
buf[len] = '\n';
|
|
buf[len+1] = 0;
|
|
|
|
return len+1;
|
|
}
|
|
|
|
static ssize_t devspec_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct of_device *ofdev;
|
|
|
|
ofdev = to_of_device(dev);
|
|
return sprintf(buf, "%s\n", ofdev->node->full_name);
|
|
}
|
|
|
|
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_RO(devspec),
|
|
__ATTR_NULL
|
|
};
|