[U-Boot] [PATCH v4 1/3] dm: introduce dev_get_addr interface

[Peng Fan]

Abstracting dev_get_addr can improve drivers that want to
get device's address.

Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
Acked-by: Igor Grinberg <grinberg at compulab.co.il>
---
 drivers/core/device.c | 12 ++++++++++++
 include/dm/device.h   | 10 ++++++++++
 2 files changed, 22 insertions(+)

diff --git a/drivers/core/device.c b/drivers/core/device.c
index b73d3b8..73c3e07 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -449,3 +449,15 @@ enum uclass_id device_get_uclass_id(struct udevice *dev)
 {
 	return dev->uclass->uc_drv->id;
 }
+
+#ifdef CONFIG_OF_CONTROL
+fdt_addr_t dev_get_addr(struct udevice *dev)
+{
+	return fdtdec_get_addr(gd->fdt_blob, dev->of_offset, "reg");
+}
+#else
+fdt_addr_t dev_get_addr(struct udevice *dev)
+{
+	return FDT_ADDR_T_NONE;
+}
+#endif
diff --git a/include/dm/device.h b/include/dm/device.h
index 81afa8c..7a48eb8 100644
--- a/include/dm/device.h
+++ b/include/dm/device.h
@@ -12,6 +12,7 @@
 #define _DM_DEVICE_H
 
 #include <dm/uclass-id.h>
+#include <fdtdec.h>
 #include <linker_lists.h>
 #include <linux/list.h>
 
@@ -351,4 +352,13 @@ int device_find_first_child(struct udevice *parent, struct udevice **devp);
  */
 int device_find_next_child(struct udevice **devp);
 
+/**
+ * dev_get_addr() - Get the reg property of a device
+ *
+ * @dev: Pointer to a device
+ *
+ * @return addr
+ */
+fdt_addr_t dev_get_addr(struct udevice *dev);
+
 #endif
-- 
1.8.4