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>
75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
#include <linux/kernel.h>
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#include <linux/stat.h>
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#include <asm/macio.h>
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#define macio_config_of_attr(field, format_string) \
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static ssize_t \
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field##_show (struct device *dev, struct device_attribute *attr, \
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char *buf) \
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{ \
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struct macio_dev *mdev = to_macio_device (dev); \
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return sprintf (buf, format_string, mdev->ofdev.node->field); \
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}
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static ssize_t
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compatible_show (struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct of_device *of;
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const char *compat;
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int cplen;
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int length = 0;
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of = &to_macio_device (dev)->ofdev;
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compat = of_get_property(of->node, "compatible", &cplen);
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if (!compat) {
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*buf = '\0';
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return 0;
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}
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while (cplen > 0) {
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int l;
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length += sprintf (buf, "%s\n", compat);
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buf += length;
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l = strlen (compat) + 1;
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compat += l;
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cplen -= l;
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}
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return length;
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}
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static ssize_t modalias_show (struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct of_device *ofdev = to_of_device(dev);
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int len;
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len = of_device_get_modalias(ofdev, buf, PAGE_SIZE - 2);
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buf[len] = '\n';
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buf[len+1] = 0;
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return len+1;
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}
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static ssize_t devspec_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct of_device *ofdev;
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ofdev = to_of_device(dev);
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return sprintf(buf, "%s\n", ofdev->node->full_name);
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}
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macio_config_of_attr (name, "%s\n");
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macio_config_of_attr (type, "%s\n");
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struct device_attribute macio_dev_attrs[] = {
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__ATTR_RO(name),
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__ATTR_RO(type),
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__ATTR_RO(compatible),
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__ATTR_RO(modalias),
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__ATTR_RO(devspec),
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__ATTR_NULL
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};
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