dm: test: Add test case for dev->dma_offset

Add test to validate dev->dma_offset is properly set on devices.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index c135881..d4195b4 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -365,6 +365,10 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "denx,u-boot-test-bus";
+
+		subnode@0 {
+			compatible = "denx,u-boot-fdt-test";
+		};
 	};
 
 	acpi_test1: acpi-test {
diff --git a/configs/sandbox64_defconfig b/configs/sandbox64_defconfig
index 4e67819..634c195 100644
--- a/configs/sandbox64_defconfig
+++ b/configs/sandbox64_defconfig
@@ -94,6 +94,7 @@
 CONFIG_BOOTP_SEND_HOSTNAME=y
 CONFIG_NETCONSOLE=y
 CONFIG_IP_DEFRAG=y
+CONFIG_DM_DMA=y
 CONFIG_REGMAP=y
 CONFIG_SYSCON=y
 CONFIG_DEVRES=y
diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index 0c7674e..fc1df31 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -108,6 +108,7 @@
 CONFIG_BOOTP_SEND_HOSTNAME=y
 CONFIG_NETCONSOLE=y
 CONFIG_IP_DEFRAG=y
+CONFIG_DM_DMA=y
 CONFIG_REGMAP=y
 CONFIG_SYSCON=y
 CONFIG_DEVRES=y
diff --git a/configs/sandbox_flattree_defconfig b/configs/sandbox_flattree_defconfig
index 96465c5..4401f33 100644
--- a/configs/sandbox_flattree_defconfig
+++ b/configs/sandbox_flattree_defconfig
@@ -75,6 +75,7 @@
 CONFIG_BOOTP_SEND_HOSTNAME=y
 CONFIG_NETCONSOLE=y
 CONFIG_IP_DEFRAG=y
+CONFIG_DM_DMA=y
 CONFIG_REGMAP=y
 CONFIG_SYSCON=y
 CONFIG_DEVRES=y
diff --git a/configs/sandbox_spl_defconfig b/configs/sandbox_spl_defconfig
index 61dae34..c011870 100644
--- a/configs/sandbox_spl_defconfig
+++ b/configs/sandbox_spl_defconfig
@@ -95,6 +95,7 @@
 CONFIG_NETCONSOLE=y
 CONFIG_IP_DEFRAG=y
 CONFIG_SPL_DM=y
+CONFIG_DM_DMA=y
 CONFIG_REGMAP=y
 CONFIG_SPL_REGMAP=y
 CONFIG_SYSCON=y
diff --git a/test/dm/core.c b/test/dm/core.c
index ce31d86..35ca689 100644
--- a/test/dm/core.c
+++ b/test/dm/core.c
@@ -1180,3 +1180,33 @@
 	return 0;
 }
 DM_TEST(dm_test_all_have_seq, UT_TESTF_SCAN_PDATA);
+
+static int dm_test_dma_offset(struct unit_test_state *uts)
+{
+       struct udevice *dev;
+       ofnode node;
+
+       /* Make sure the bus's dma-ranges aren't taken into account here */
+       node = ofnode_path("/mmio-bus@0");
+       ut_assert(ofnode_valid(node));
+       ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_BUS, node, &dev));
+       ut_asserteq_64(0, dev->dma_offset);
+
+       /* Device behind a bus with dma-ranges */
+       node = ofnode_path("/mmio-bus@0/subnode@0");
+       ut_assert(ofnode_valid(node));
+       ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_FDT, node, &dev));
+       ut_asserteq_64(-0x10000000ULL, dev->dma_offset);
+
+       /* This one has no dma-ranges */
+       node = ofnode_path("/mmio-bus@1");
+       ut_assert(ofnode_valid(node));
+       ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_BUS, node, &dev));
+       node = ofnode_path("/mmio-bus@1/subnode@0");
+       ut_assert(ofnode_valid(node));
+       ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_FDT, node, &dev));
+       ut_asserteq_64(0, dev->dma_offset);
+
+       return 0;
+}
+DM_TEST(dm_test_dma_offset, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);