test: dm: add video bridge tests

Add tests for video bridge ops.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 8029195..52e9ddb 100644 (file)
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -1047,6 +1047,31 @@
                };
        };
 
+       lvds-encoder {
+               compatible = "lvds-encoder";
+
+               ports {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       port@0 {
+                               reg = <0>;
+
+                               bridge_input: endpoint {
+                                       /* link to output */
+                               };
+                       };
+
+                       port@1 {
+                               reg = <1>;
+
+                               bridge_output: endpoint {
+                                       remote-endpoint = <&panel_input>;
+                               };
+                       };
+               };
+       };
+
        wdt-gpio-toggle {
                gpios = <&gpio_a 8 0>;
                compatible = "linux,wdt-gpio";
@@ -1402,6 +1427,27 @@
        panel {
                compatible = "simple-panel";
                backlight = <&backlight 0 100>;
+
+               display-timings {
+                       timing@0 {
+                               /* 1280x800@60Hz */
+                               clock-frequency = <68000000>;
+                               hactive = <1280>;
+                               hfront-porch = <48>;
+                               hback-porch = <18>;
+                               hsync-len = <30>;
+                               vactive = <800>;
+                               vfront-porch = <3>;
+                               vback-porch = <12>;
+                               vsync-len = <5>;
+                       };
+               };
+
+               port {
+                       panel_input: endpoint {
+                               remote-endpoint = <&bridge_output>;
+                       };
+               };
        };
 
        scsi {

diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index 7b35ad8..396c58c 100644 (file)
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -328,6 +328,8 @@ CONFIG_USB_ETH_CDC=y
 CONFIG_VIDEO=y
 CONFIG_VIDEO_FONT_SUN12X22=y
 CONFIG_VIDEO_COPY=y
+CONFIG_VIDEO_BRIDGE=y
+CONFIG_VIDEO_BRIDGE_LVDS_CODEC=y
 CONFIG_CONSOLE_ROTATION=y
 CONFIG_CONSOLE_TRUETYPE=y
 CONFIG_CONSOLE_TRUETYPE_CANTORAONE=y

diff --git a/test/dm/Makefile b/test/dm/Makefile
index e44f3d8..3afcc26 100644 (file)
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -63,6 +63,7 @@ obj-$(CONFIG_SOUND) += i2s.o
 obj-$(CONFIG_CLK_K210_SET_RATE) += k210_pll.o
 obj-$(CONFIG_IOMMU) += iommu.o
 obj-$(CONFIG_LED) += led.o
+obj-$(CONFIG_VIDEO_BRIDGE_LVDS_CODEC) += video_bridge.o
 obj-$(CONFIG_DM_MAILBOX) += mailbox.o
 obj-$(CONFIG_DM_MDIO) += mdio.o
 obj-$(CONFIG_DM_MDIO_MUX) += mdio_mux.o

diff --git a/test/dm/video_bridge.c b/test/dm/video_bridge.c
new file mode 100644 (file)
index 0000000..f55a333
--- /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);