[PATCH v2 04/13] test: dm: test-fdt: Add checks for uclass_get_device_by_endpoint()

[Miquel Raynal]

This is a new DM core helper. There is now a graph endpoint
representation in the sandbox test DTS, so we can just use it to verify
the helper proper behavior.

Suggested-by: Simon Glass <sjg at chromium.org>
Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>
---
 test/dm/test-fdt.c | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/test/dm/test-fdt.c b/test/dm/test-fdt.c
index af8cd617108ac2421f7275948be000a7cbaebda0..309e9da0a8e01d0ac469ae78983edf9499f2a504 100644
--- a/test/dm/test-fdt.c
+++ b/test/dm/test-fdt.c
@@ -792,7 +792,7 @@ DM_TEST(dm_test_fdt_disable_enable_by_path, UTF_SCAN_PDATA | UTF_SCAN_FDT);
 /* Test a few uclass phandle functions */
 static int dm_test_fdt_phandle(struct unit_test_state *uts)
 {
-	struct udevice *back, *dev, *dev2;
+	struct udevice *back, *dispc, *panel, *dev, *dev2;
 
 	ut_assertok(uclass_find_first_device(UCLASS_PANEL_BACKLIGHT, &back));
 	ut_assertnonnull(back);
@@ -807,6 +807,24 @@ static int dm_test_fdt_phandle(struct unit_test_state *uts)
 						 "power-supply", &dev2));
 	ut_asserteq_ptr(dev, dev2);
 
+	/* Test uclass_get_device_by_endpoint() */
+	ut_assertok(uclass_find_device_by_name(UCLASS_TEST_FDT, "display-controller", &dispc));
+	ut_assertnonnull(dispc);
+	ut_asserteq(0, device_active(dispc));
+	ut_assertok(uclass_find_device_by_name(UCLASS_PANEL, "panel", &panel));
+	ut_assertnonnull(panel);
+	ut_asserteq(0, device_active(panel));
+
+	ut_asserteq(-ENODEV, uclass_get_device_by_endpoint(UCLASS_PANEL_BACKLIGHT, dispc, 1, &dev));
+	ut_asserteq(-EINVAL, uclass_get_device_by_endpoint(UCLASS_PANEL, dispc, 0, &dev));
+	ut_assertok(uclass_get_device_by_endpoint(UCLASS_PANEL, dispc, 1, &dev));
+	ut_asserteq_ptr(panel, dev);
+
+	ut_asserteq(-ENODEV, uclass_get_device_by_endpoint(UCLASS_PANEL_BACKLIGHT, panel, 0, &dev2));
+	ut_asserteq(-EINVAL, uclass_get_device_by_endpoint(UCLASS_TEST_FDT, panel, 1, &dev2));
+	ut_assertok(uclass_get_device_by_endpoint(UCLASS_TEST_FDT, panel, 0, &dev2));
+	ut_asserteq_ptr(dispc, dev2);
+
 	return 0;
 }
 DM_TEST(dm_test_fdt_phandle, UTF_SCAN_PDATA | UTF_SCAN_FDT);

-- 
2.47.0