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macio_sysfs.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);

      buf[len] = '\n';
      buf[len+1] = 0;

      return len+1;
}

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
};

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