test/dm/panel.c

   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 */
  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_get_device_by_name(UCLASS_PWM, "pwm", &pwm));
  32         ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
  33         ut_assertok(regulator_get_by_platname("VDD_EMMC_1.8V", &reg));
  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);