1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Test for video bridge uclass
4 *
5 * Copyright (c) 2025 Svyatoslav Ryhel <clamor95@gmail.com>
6 */
7
8 #include <backlight.h>
9 #include <dm.h>
10 #include <panel.h>
11 #include <video.h>
12 #include <video_bridge.h>
13 #include <asm/gpio.h>
14 #include <asm/test.h>
15 #include <dm/test.h>
16 #include <power/regulator.h>
17 #include <test/test.h>
18 #include <test/ut.h>
19
20 /* Basic test of the video uclass, test is based on driven panel */
dm_test_video_bridge(struct unit_test_state * uts)21 static int dm_test_video_bridge(struct unit_test_state *uts)
22 {
23 struct udevice *dev, *pwm, *gpio, *reg;
24 uint period_ns, duty_ns;
25 bool enable, polarity;
26 struct display_timing timing;
27
28 ut_assertok(uclass_first_device_err(UCLASS_VIDEO_BRIDGE, &dev));
29 ut_assertok(uclass_get_device_by_name(UCLASS_PWM, "pwm", &pwm));
30 ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
31 ut_assertok(regulator_get_by_platname("VDD_EMMC_1.8V", ®));
32 ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
33 &enable, &polarity));
34 ut_asserteq(false, enable);
35 ut_asserteq(true, regulator_get_enable(reg));
36
37 /* bridge calls panel_enable_backlight() of panel */
38 ut_assertok(video_bridge_attach(dev));
39 ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
40 &enable, &polarity));
41 ut_asserteq(1000, period_ns);
42 ut_asserteq(170 * 1000 / 255, duty_ns);
43 ut_asserteq(true, enable);
44 ut_asserteq(false, polarity);
45 ut_asserteq(1, sandbox_gpio_get_value(gpio, 1));
46 ut_asserteq(true, regulator_get_enable(reg));
47
48 /* bridge calls panel_set_backlight() of panel */
49 ut_assertok(video_bridge_set_backlight(dev, BACKLIGHT_DEFAULT));
50 ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
51 &enable, &polarity));
52 ut_asserteq(true, enable);
53 ut_asserteq(170 * 1000 / 255, duty_ns);
54
55 /* bridge should be active */
56 ut_assertok(video_bridge_set_active(dev, true));
57
58 /* bridge is internal and has no hotplug gpio */
59 ut_asserteq(-ENOENT, video_bridge_check_attached(dev));
60
61 /* check passing timings and EDID */
62 ut_assertok(video_bridge_get_display_timing(dev, &timing));
63 ut_assertok(video_bridge_read_edid(dev, NULL, 0));
64
65 return 0;
66 }
67 DM_TEST(dm_test_video_bridge, UTF_SCAN_PDATA | UTF_SCAN_FDT);
68