LXR linux/sound/aoa/soundbus/sysfs.c

   1#include <linux/kernel.h>
   2#include <linux/stat.h>
   3/* FIX UP */
   4#include "soundbus.h"
   5
   6#define soundbus_config_of_attr(field, format_string)                   \
   7static ssize_t                                                          \
   8field##_show (struct device *dev, struct device_attribute *attr,        \
   9              char *buf)                                                \
  10{                                                                       \
  11        struct soundbus_dev *mdev = to_soundbus_device (dev);           \
  12        return sprintf (buf, format_string, mdev->ofdev.node->field);   \
  13}
  14
  15static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
  16                             char *buf)
  17{
  18        struct soundbus_dev *sdev = to_soundbus_device(dev);
  19        struct of_device *of = &sdev->ofdev;
  20        int length;
  21
  22        if (*sdev->modalias) {
  23                strlcpy(buf, sdev->modalias, sizeof(sdev->modalias) + 1);
  24                strcat(buf, "\n");
  25                length = strlen(buf);
  26        } else {
  27                length = sprintf(buf, "of:N%sT%s\n",
  28                                 of->node->name, of->node->type);
  29        }
  30
  31        return length;
  32}
  33
  34soundbus_config_of_attr (name, "%s\n");
  35soundbus_config_of_attr (type, "%s\n");
  36
  37struct device_attribute soundbus_dev_attrs[] = {
  38        __ATTR_RO(name),
  39        __ATTR_RO(type),
  40        __ATTR_RO(modalias),
  41        __ATTR_NULL
  42};
  43