test/dm/pwm.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2017 Google, Inc
   4  */
   5
   6 #include <dm.h>
   7 #include <pwm.h>
   8 #include <asm/test.h>
   9 #include <dm/test.h>
  10 #include <test/test.h>
  11 #include <test/ut.h>
  12
  13 /* Basic test of the pwm uclass */
  14 static int dm_test_pwm_base(struct unit_test_state *uts)
  15 {
  16         struct udevice *dev;
  17         uint period_ns;
  18         uint duty_ns;
  19         bool enable;
  20         bool polarity;
  21
  22         ut_assertok(uclass_get_device_by_name(UCLASS_PWM, "pwm", &dev));
  23         ut_assertnonnull(dev);
  24         ut_assertok(pwm_set_config(dev, 0, 100, 50));
  25         ut_assertok(pwm_set_enable(dev, 0, true));
  26         ut_assertok(pwm_set_enable(dev, 1, true));
  27         ut_assertok(pwm_set_enable(dev, 2, true));
  28         ut_asserteq(-ENOSPC, pwm_set_enable(dev, 3, true));
  29         ut_assertok(pwm_set_invert(dev, 0, true));
  30
  31         ut_assertok(pwm_set_config(dev, 2, 100, 50));
  32         ut_assertok(sandbox_pwm_get_config(dev, 2, &period_ns, &duty_ns,
  33                                            &enable, &polarity));
  34         ut_asserteq(period_ns, 4096);
  35         ut_asserteq(duty_ns, 50 * 4096 / 100);
  36
  37         ut_assertok(uclass_get_device(UCLASS_PWM, 0, &dev));
  38         ut_assertok(uclass_get_device(UCLASS_PWM, 1, &dev));
  39         ut_assertok(uclass_get_device(UCLASS_PWM, 2, &dev));
  40         ut_asserteq(-ENODEV, uclass_get_device(UCLASS_PWM, 3, &dev));
  41
  42         return 0;
  43 }
  44 DM_TEST(dm_test_pwm_base, UTF_SCAN_PDATA | UTF_SCAN_FDT);