ahci: Add a disk-controller uclass

Add a uclass ID for a disk controller. This can be used by AHCI/SATA or
other controller types. There are no operations and no interface so far,
but it is possible to probe a SATA device.

Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/block/disk-uclass.c b/drivers/block/disk-uclass.c
new file mode 100644
index 00000000000..d665b3505ad
--- /dev/null
+++ b/drivers/block/disk-uclass.c
@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2015 Google, Inc
+ * Written by Simon Glass <[email protected]>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+
+UCLASS_DRIVER(disk) = {
+	.id		= UCLASS_DISK,
+	.name		= "disk",
+};