From 1ca7e2062b4e8c3b211753dcb19c063b5b9b73ca Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Wed, 23 Jul 2014 06:55:18 -0600
Subject: dm: Provide a function to scan child FDT nodes

At present only root nodes in the device tree are scanned for devices.
But some devices can have children. For example a SPI bus may have
several children for each of its chip selects.

Add a function which scans subnodes and binds devices for each one. This
can be used for the root node scan also, so change it.

A device can call this function in its bind() or probe() methods to bind
its children.

Signed-off-by: Simon Glass <sjg@chromium.org>
---
 include/dm/root.h      | 16 ++++++++++++++++
 include/dm/test.h      |  9 +++++++++
 include/dm/uclass-id.h |  1 +
 3 files changed, 26 insertions(+)

(limited to 'include/dm')

diff --git a/include/dm/root.h b/include/dm/root.h
index 02c7788..33f951b 100644
--- a/include/dm/root.h
+++ b/include/dm/root.h
@@ -46,6 +46,22 @@ int dm_scan_platdata(bool pre_reloc_only);
 int dm_scan_fdt(const void *blob, bool pre_reloc_only);
 
 /**
+ * dm_scan_fdt_node() - Scan the device tree and bind drivers for a node
+ *
+ * This scans the subnodes of a device tree node and and creates a driver
+ * for each one.
+ *
+ * @parent: Parent device for the devices that will be created
+ * @blob: Pointer to device tree blob
+ * @offset: Offset of node to scan
+ * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
+ * flag. If false bind all drivers.
+ * @return 0 if OK, -ve on error
+ */
+int dm_scan_fdt_node(struct udevice *parent, const void *blob, int offset,
+		     bool pre_reloc_only);
+
+/**
  * dm_init_and_scan() - Initialise Driver Model structures and scan for devices
  *
  * This function initialises the roots of the driver tree and uclass trees,
diff --git a/include/dm/test.h b/include/dm/test.h
index 409f1a3..e8e1c0b 100644
--- a/include/dm/test.h
+++ b/include/dm/test.h
@@ -156,6 +156,15 @@ int dm_check_operations(struct dm_test_state *dms, struct udevice *dev,
 			uint32_t base, struct dm_test_priv *priv);
 
 /**
+ * dm_check_devices() - check the devices respond to operations correctly
+ *
+ * @dms: Overall test state
+ * @num_devices: Number of test devices to check
+ * @return 0 if OK, -ve on error
+ */
+int dm_check_devices(struct dm_test_state *dms, int num_devices);
+
+/**
  * dm_test_main() - Run all the tests
  *
  * This runs all available driver model tests
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
index 77ff9ea..dd95fca 100644
--- a/include/dm/uclass-id.h
+++ b/include/dm/uclass-id.h
@@ -17,6 +17,7 @@ enum uclass_id {
 	UCLASS_DEMO,
 	UCLASS_TEST,
 	UCLASS_TEST_FDT,
+	UCLASS_TEST_BUS,
 
 	/* U-Boot uclasses start here */
 	UCLASS_GPIO,		/* Bank of general-purpose I/O pins */
-- 
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