#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 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 ssize_t modalias_show (struct device *dev, struct device_attribute *attr,
  			      char *buf)
  {

  	int len = of_device_get_modalias(dev, buf, PAGE_SIZE - 2);

  	buf[len] = '
  ';
  	buf[len+1] = 0;
  
  	return len+1;

  }

  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, "%s
  ", ofdev->dev.of_node->full_name);

  }

  macio_config_of_attr (name, "%s
  ");
  macio_config_of_attr (type, "%s
  ");
  
  struct device_attribute macio_dev_attrs[] = {
  	__ATTR_RO(name),
  	__ATTR_RO(type),
  	__ATTR_RO(compatible),

  	__ATTR_RO(modalias),

  	__ATTR_RO(devspec),

  	__ATTR_NULL
  };