drivers/macintosh/macio_sysfs.c

   1 #include <linux/config.h>
   2 #include <linux/kernel.h>
   3 #include <linux/stat.h>
   4 #include <asm/macio.h>
   5
   6
   7 #define macio_config_of_attr(field, format_string)                      \
   8 static ssize_t                                                          \
   9 field##_show (struct device *dev, struct device_attribute *attr,        \
  10               char *buf)                                                \
  11 {                                                                       \
  12         struct macio_dev *mdev = to_macio_device (dev);                 \
  13         return sprintf (buf, format_string, mdev->ofdev.node->field);   \
  14 }
  15
  16 static ssize_t
  17 compatible_show (struct device *dev, struct device_attribute *attr, char *buf)
  18 {
  19         struct of_device *of;
  20         char *compat;
  21         int cplen;
  22         int length = 0;
  23
  24         of = &to_macio_device (dev)->ofdev;
  25         compat = (char *) get_property(of->node, "compatible", &cplen);
  26         if (!compat) {
  27                 *buf = '\0';
  28                 return 0;
  29         }
  30         while (cplen > 0) {
  31                 int l;
  32                 length += sprintf (buf, "%s\n", compat);
  33                 buf += length;
  34                 l = strlen (compat) + 1;
  35                 compat += l;
  36                 cplen -= l;
  37         }
  38
  39         return length;
  40 }
  41
  42 static ssize_t modalias_show (struct device *dev, struct device_attribute *attr,
  43                               char *buf)
  44 {
  45         struct of_device *of;
  46         char *compat;
  47         int cplen;
  48         int length;
  49
  50         of = &to_macio_device (dev)->ofdev;
  51         compat = (char *) get_property (of->node, "compatible", &cplen);
  52         if (!compat) compat = "", cplen = 1;
  53         length = sprintf (buf, "of:N%sT%s", of->node->name, of->node->type);
  54         buf += length;
  55         while (cplen > 0) {
  56                 int l;
  57                 length += sprintf (buf, "C%s", compat);
  58                 buf += length;
  59                 l = strlen (compat) + 1;
  60                 compat += l;
  61                 cplen -= l;
  62         }
  63
  64         return length;
  65 }
  66
  67 macio_config_of_attr (name, "%s\n");
  68 macio_config_of_attr (type, "%s\n");
  69
  70 struct device_attribute macio_dev_attrs[] = {
  71         __ATTR_RO(name),
  72         __ATTR_RO(type),
  73         __ATTR_RO(compatible),
  74         __ATTR_RO(modalias),
  75         __ATTR_NULL
  76 };