Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / macintosh / macio_sysfs.c

diff --git a/kernel/drivers/macintosh/macio_sysfs.c b/kernel/drivers/macintosh/macio_sysfs.c
new file mode 100644 (file)
index 0000000..8eb40af
--- /dev/null
+++ b/kernel/drivers/macintosh/macio_sysfs.c
@@ -0,0 +1,71 @@
+#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\n", 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] = '\n';
+       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\n", ofdev->dev.of_node->full_name);
+}
+
+macio_config_of_attr (name, "%s\n");
+macio_config_of_attr (type, "%s\n");
+
+struct device_attribute macio_dev_attrs[] = {
+       __ATTR_RO(name),
+       __ATTR_RO(type),
+       __ATTR_RO(compatible),
+       __ATTR_RO(modalias),
+       __ATTR_RO(devspec),
+       __ATTR_NULL
+};