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.dev.of_node->field); \
  13 }
  14
  15 static ssize_t
  16 compatible_show (struct device *dev, struct device_attribute *attr, char *buf)
  17 {
  18         struct platform_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->dev.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         int len = of_device_get_modalias(dev, buf, PAGE_SIZE - 2);
  45
  46         buf[len] = '\n';
  47         buf[len+1] = 0;
  48
  49         return len+1;
  50 }
  51
  52 static ssize_t devspec_show(struct device *dev,
  53                                 struct device_attribute *attr, char *buf)
  54 {
  55         struct platform_device *ofdev;
  56
  57         ofdev = to_platform_device(dev);
  58         return sprintf(buf, "%s\n", ofdev->dev.of_node->full_name);
  59 }
  60
  61 macio_config_of_attr (name, "%s\n");
  62 macio_config_of_attr (type, "%s\n");
  63
  64 struct device_attribute macio_dev_attrs[] = {
  65         __ATTR_RO(name),
  66         __ATTR_RO(type),
  67         __ATTR_RO(compatible),
  68         __ATTR_RO(modalias),
  69         __ATTR_RO(devspec),
  70         __ATTR_NULL
  71 };