1 files changed, 67 insertions, 0 deletions
diff --git a/test/dm/video_bridge.c b/test/dm/video_bridge.c
new file mode 100644
index 00000000000..f55a333c0b8
--- /dev/null
+++ b/test/dm/video_bridge.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Test for video bridge uclass
+ *
+ * Copyright (c) 2025 Svyatoslav Ryhel <clamor95@gmail.com>
+ */
+
+#include <backlight.h>
+#include <dm.h>
+#include <panel.h>
+#include <video.h>
+#include <video_bridge.h>
+#include <asm/gpio.h>
+#include <asm/test.h>
+#include <dm/test.h>
+#include <power/regulator.h>
+#include <test/test.h>
+#include <test/ut.h>
+
+/* Basic test of the video uclass, test is based on driven panel */
+static int dm_test_video_bridge(struct unit_test_state *uts)
+{
+	struct udevice *dev, *pwm, *gpio, *reg;
+	uint period_ns, duty_ns;
+	bool enable, polarity;
+	struct display_timing timing;
+
+	ut_assertok(uclass_first_device_err(UCLASS_VIDEO_BRIDGE, &dev));
+	ut_assertok(uclass_get_device_by_name(UCLASS_PWM, "pwm", &pwm));
+	ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
+	ut_assertok(regulator_get_by_platname("VDD_EMMC_1.8V", &reg));
+	ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
+					   &enable, &polarity));
+	ut_asserteq(false, enable);
+	ut_asserteq(true, regulator_get_enable(reg));
+
+	/* bridge calls panel_enable_backlight() of panel */
+	ut_assertok(video_bridge_attach(dev));
+	ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
+					   &enable, &polarity));
+	ut_asserteq(1000, period_ns);
+	ut_asserteq(170 * 1000 / 255, duty_ns);
+	ut_asserteq(true, enable);
+	ut_asserteq(false, polarity);
+	ut_asserteq(1, sandbox_gpio_get_value(gpio, 1));
+	ut_asserteq(true, regulator_get_enable(reg));
+
+	/* bridge calls panel_set_backlight() of panel */
+	ut_assertok(video_bridge_set_backlight(dev, BACKLIGHT_DEFAULT));
+	ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
+					   &enable, &polarity));
+	ut_asserteq(true, enable);
+	ut_asserteq(170 * 1000 / 255, duty_ns);
+
+	/* bridge should be active */
+	ut_assertok(video_bridge_set_active(dev, true));
+
+	/* bridge is internal and has no hotplug gpio */
+	ut_asserteq(-ENOENT, video_bridge_check_attached(dev));
+
+	/* check passing timings and EDID */
+	ut_assertok(video_bridge_get_display_timing(dev, &timing));
+	ut_assertok(video_bridge_read_edid(dev, NULL, 0));
+
+	return 0;
+}
+DM_TEST(dm_test_video_bridge, UTF_SCAN_PDATA | UTF_SCAN_FDT);