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 <test/ut.h>
  18 #include <power/regulator.h>
  19
  20 /* Basic test of the panel uclass */
  21 static int dm_test_panel(struct unit_test_state *uts)
  22 {
  23         struct udevice *dev, *pwm, *gpio, *reg;
  24         uint period_ns;
  25         uint duty_ns;
  26         bool enable;
  27         bool polarity;
  28
  29         ut_assertok(uclass_first_device_err(UCLASS_PANEL, &dev));
  30         ut_assertok(uclass_first_device_err(UCLASS_PWM, &pwm));
  31         ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
  32         ut_assertok(regulator_get_by_platname("VDD_EMMC_1.8V", &reg));
  33         ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
  34                                            &enable, &polarity));
  35         ut_asserteq(false, enable);
  36         ut_asserteq(false, regulator_get_enable(reg));
  37
  38         ut_assertok(panel_enable_backlight(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 / 256, 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         ut_assertok(panel_set_backlight(dev, 40));
  49         ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
  50                                            &enable, &polarity));
  51         ut_asserteq(64 * 1000 / 256, duty_ns);
  52
  53         ut_assertok(panel_set_backlight(dev, BACKLIGHT_MAX));
  54         ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
  55                                            &enable, &polarity));
  56         ut_asserteq(255 * 1000 / 256, duty_ns);
  57
  58         ut_assertok(panel_set_backlight(dev, BACKLIGHT_MIN));
  59         ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
  60                                            &enable, &polarity));
  61         ut_asserteq(0 * 1000 / 256, duty_ns);
  62         ut_asserteq(1, sandbox_gpio_get_value(gpio, 1));
  63
  64         ut_assertok(panel_set_backlight(dev, BACKLIGHT_DEFAULT));
  65         ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
  66                                            &enable, &polarity));
  67         ut_asserteq(true, enable);
  68         ut_asserteq(170 * 1000 / 256, duty_ns);
  69
  70         ut_assertok(panel_set_backlight(dev, BACKLIGHT_OFF));
  71         ut_assertok(sandbox_pwm_get_config(pwm, 0, &period_ns, &duty_ns,
  72                                            &enable, &polarity));
  73         ut_asserteq(0 * 1000 / 256, duty_ns);
  74         ut_asserteq(0, sandbox_gpio_get_value(gpio, 1));
  75         ut_asserteq(false, regulator_get_enable(reg));
  76
  77         return 0;
  78 }
  79 DM_TEST(dm_test_panel, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);