1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Test for panel uclass
4 *
5 * Copyright (c) 2018 Google, Inc
6 * Written by Simon Glass <sjg@chromium.org>
7 */
8
9 #include <common.h>
10 #include <backlight.h>
11 #include <dm.h>
12 #include <panel.h>
13 #include <video.h>
14 #include <asm/gpio.h>
15 #include <asm/test.h>
16 #include <dm/test.h>
17 #include <power/regulator.h>
18 #include <test/test.h>
19 #include <test/ut.h>
20
21 /* Basic test of the panel uclass */
dm_test_panel(struct unit_test_state * uts)22 static int dm_test_panel(struct unit_test_state *uts)
23 {
24 struct udevice *dev, *pwm, *gpio, *reg;
25 uint period_ns;
26 uint duty_ns;
27 bool enable;
28 bool polarity;
29
30 ut_assertok(uclass_first_device_err(UCLASS_PANEL, &dev));
31 ut_assertok(uclass_first_device_err(UCLASS_PWM, &pwm));
32 ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
33 ut_assertok(regulator_get_by_platname("VDD_EMMC_1.8V", ®));
34 ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
35 &enable, &polarity));
36 ut_asserteq(false, enable);
37 ut_asserteq(false, regulator_get_enable(reg));
38
39 ut_assertok(panel_enable_backlight(dev));
40 ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
41 &enable, &polarity));
42 ut_asserteq(1000, period_ns);
43 ut_asserteq(170 * 1000 / 255, duty_ns);
44 ut_asserteq(true, enable);
45 ut_asserteq(false, polarity);
46 ut_asserteq(1, sandbox_gpio_get_value(gpio, 1));
47 ut_asserteq(true, regulator_get_enable(reg));
48
49 ut_assertok(panel_set_backlight(dev, 40));
50 ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
51 &enable, &polarity));
52 ut_asserteq(64 * 1000 / 255, duty_ns);
53
54 ut_assertok(panel_set_backlight(dev, BACKLIGHT_MAX));
55 ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
56 &enable, &polarity));
57 ut_asserteq(255 * 1000 / 255, duty_ns);
58
59 ut_assertok(panel_set_backlight(dev, BACKLIGHT_MIN));
60 ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
61 &enable, &polarity));
62 ut_asserteq(0 * 1000 / 255, duty_ns);
63 ut_asserteq(1, sandbox_gpio_get_value(gpio, 1));
64
65 ut_assertok(panel_set_backlight(dev, BACKLIGHT_DEFAULT));
66 ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
67 &enable, &polarity));
68 ut_asserteq(true, enable);
69 ut_asserteq(170 * 1000 / 255, duty_ns);
70
71 ut_assertok(panel_set_backlight(dev, BACKLIGHT_OFF));
72 ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
73 &enable, &polarity));
74 ut_asserteq(0 * 1000 / 255, duty_ns);
75 ut_asserteq(0, sandbox_gpio_get_value(gpio, 1));
76 ut_asserteq(false, regulator_get_enable(reg));
77
78 return 0;
79 }
80 DM_TEST(dm_test_panel, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
81