greybus: serial number attribute added

diff --git a/drivers/staging/greybus/core.c b/drivers/staging/greybus/core.c
index c05495b..68fb2a5 100644 (file)
--- a/drivers/staging/greybus/core.c
+++ b/drivers/staging/greybus/core.c
@@ -169,7 +169,6 @@ static void greybus_module_release(struct device *dev)
 }
 
 
-
 static struct device_type greybus_module_type = {
        .name =         "greybus_module",
        .release =      greybus_module_release,
@@ -222,8 +221,40 @@ static struct attribute_group function_addr_grp = {
        .is_visible =   function_attrs_are_visible,
 };
 
+#if 0
+struct greybus_descriptor_module_id {
+       __le16  vendor;
+       __le16  product;
+       __le16  version;
+       __u8    vendor_stringid;
+       __u8    product_stringid;
+};
+#endif
+
+/* Serial Number */
+static ssize_t serial_number_show(struct device *dev,
+                                 struct device_attribute *attr, char *buf)
+{
+       struct greybus_device *gdev = to_greybus_device(dev);
+       return sprintf(buf, "%llX\n",
+                     (unsigned long long)gdev->serial_number.serial_number);
+}
+static DEVICE_ATTR_RO(serial_number);
+
+static struct attribute *serial_number_attrs[] = {
+       &dev_attr_serial_number.attr,
+       NULL,
+};
+
+static struct attribute_group serial_number_grp = {
+       .attrs =        serial_number_attrs,
+       .is_visible =   function_attrs_are_visible,
+};
+
+
 static const struct attribute_group *greybus_module_groups[] = {
        &function_addr_grp,
+       &serial_number_grp,
        NULL,
 };