drivers/macintosh/macio_sysfs.c

   1 #include <linux/kernel.h>
   2 #include <linux/stat.h>
   3 #include <asm/macio.h>
   4
   5
   6 #define macio_config_of_attr(field, format_string)                      \
   7 static ssize_t                                                          \
   8 field##_show (struct device *dev, struct device_attribute *attr,        \
   9               char *buf)                                                \
  10 {                                                                       \
  11         struct macio_dev *mdev = to_macio_device (dev);                 \
  12         return sprintf (buf, format_string, mdev->ofdev.node->field);   \
  13 }
  14
  15 static ssize_t
  16 compatible_show (struct device *dev, struct device_attribute *attr, char *buf)
  17 {
  18         struct of_device *of;
  19         const char *compat;
  20         int cplen;
  21         int length = 0;
  22
  23         of = &to_macio_device (dev)->ofdev;
  24         compat = of_get_property(of->node, "compatible", &cplen);
  25         if (!compat) {
  26                 *buf = '\0';
  27                 return 0;
  28         }
  29         while (cplen > 0) {
  30                 int l;
  31                 length += sprintf (buf, "%s\n", compat);
  32                 buf += length;
  33                 l = strlen (compat) + 1;
  34                 compat += l;
  35                 cplen -= l;
  36         }
  37
  38         return length;
  39 }
  40
  41 static ssize_t modalias_show (struct device *dev, struct device_attribute *attr,
  42                               char *buf)
  43 {
  44         struct of_device *ofdev = to_of_device(dev);
  45         int len;
  46
  47         len = of_device_get_modalias(ofdev, buf, PAGE_SIZE);
  48
  49         buf[len] = '\n';
  50         buf[len+1] = 0;
  51
  52         return len+1;
  53 }
  54
  55 macio_config_of_attr (name, "%s\n");
  56 macio_config_of_attr (type, "%s\n");
  57
  58 struct device_attribute macio_dev_attrs[] = {
  59         __ATTR_RO(name),
  60         __ATTR_RO(type),
  61         __ATTR_RO(compatible),
  62         __ATTR_RO(modalias),
  63         __ATTR_NULL
  64 };