led.c 4.3 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2015 Google, Inc
  4. */
  5. #include <common.h>
  6. #include <dm.h>
  7. #include <led.h>
  8. #include <asm/gpio.h>
  9. #include <dm/test.h>
  10. #include <test/test.h>
  11. #include <test/ut.h>
  12. /* Base test of the led uclass */
  13. static int dm_test_led_base(struct unit_test_state *uts)
  14. {
  15. struct udevice *dev;
  16. /* Get the top-level device */
  17. ut_assertok(uclass_get_device(UCLASS_LED, 0, &dev));
  18. ut_assertok(uclass_get_device(UCLASS_LED, 1, &dev));
  19. ut_assertok(uclass_get_device(UCLASS_LED, 2, &dev));
  20. ut_assertok(uclass_get_device(UCLASS_LED, 3, &dev));
  21. ut_assertok(uclass_get_device(UCLASS_LED, 4, &dev));
  22. ut_asserteq(-ENODEV, uclass_get_device(UCLASS_LED, 5, &dev));
  23. return 0;
  24. }
  25. DM_TEST(dm_test_led_base, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  26. /* Test of the LED 'default-state' device tree property */
  27. static int dm_test_led_default_state(struct unit_test_state *uts)
  28. {
  29. struct udevice *dev;
  30. /* configure the default state (auto-probe) */
  31. led_default_state();
  32. /* Check that we handle the default-state property correctly. */
  33. ut_assertok(led_get_by_label("sandbox:default_on", &dev));
  34. ut_asserteq(LEDST_ON, led_get_state(dev));
  35. /* Also tests default label behaviour */
  36. ut_assertok(led_get_by_label("default_off", &dev));
  37. ut_asserteq(LEDST_OFF, led_get_state(dev));
  38. return 0;
  39. }
  40. DM_TEST(dm_test_led_default_state, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  41. /* Test of the led uclass using the led_gpio driver */
  42. static int dm_test_led_gpio(struct unit_test_state *uts)
  43. {
  44. const int offset = 1;
  45. struct udevice *dev, *gpio;
  46. /*
  47. * Check that we can manipulate an LED. LED 1 is connected to GPIO
  48. * bank gpio_a, offset 1.
  49. */
  50. ut_assertok(uclass_get_device(UCLASS_LED, 1, &dev));
  51. ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
  52. ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
  53. ut_assertok(led_set_state(dev, LEDST_ON));
  54. ut_asserteq(1, sandbox_gpio_get_value(gpio, offset));
  55. ut_asserteq(LEDST_ON, led_get_state(dev));
  56. ut_assertok(led_set_state(dev, LEDST_OFF));
  57. ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
  58. ut_asserteq(LEDST_OFF, led_get_state(dev));
  59. return 0;
  60. }
  61. DM_TEST(dm_test_led_gpio, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  62. /* Test that we can toggle LEDs */
  63. static int dm_test_led_toggle(struct unit_test_state *uts)
  64. {
  65. const int offset = 1;
  66. struct udevice *dev, *gpio;
  67. /*
  68. * Check that we can manipulate an LED. LED 1 is connected to GPIO
  69. * bank gpio_a, offset 1.
  70. */
  71. ut_assertok(uclass_get_device(UCLASS_LED, 1, &dev));
  72. ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
  73. ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
  74. ut_assertok(led_set_state(dev, LEDST_TOGGLE));
  75. ut_asserteq(1, sandbox_gpio_get_value(gpio, offset));
  76. ut_asserteq(LEDST_ON, led_get_state(dev));
  77. ut_assertok(led_set_state(dev, LEDST_TOGGLE));
  78. ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
  79. ut_asserteq(LEDST_OFF, led_get_state(dev));
  80. return 0;
  81. }
  82. DM_TEST(dm_test_led_toggle, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  83. /* Test obtaining an LED by label */
  84. static int dm_test_led_label(struct unit_test_state *uts)
  85. {
  86. struct udevice *dev, *cmp;
  87. ut_assertok(led_get_by_label("sandbox:red", &dev));
  88. ut_asserteq(1, device_active(dev));
  89. ut_assertok(uclass_get_device(UCLASS_LED, 1, &cmp));
  90. ut_asserteq_ptr(dev, cmp);
  91. ut_assertok(led_get_by_label("sandbox:green", &dev));
  92. ut_asserteq(1, device_active(dev));
  93. ut_assertok(uclass_get_device(UCLASS_LED, 2, &cmp));
  94. ut_asserteq_ptr(dev, cmp);
  95. ut_asserteq(-ENODEV, led_get_by_label("sandbox:blue", &dev));
  96. return 0;
  97. }
  98. DM_TEST(dm_test_led_label, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  99. /* Test LED blinking */
  100. #ifdef CONFIG_LED_BLINK
  101. static int dm_test_led_blink(struct unit_test_state *uts)
  102. {
  103. const int offset = 1;
  104. struct udevice *dev, *gpio;
  105. /*
  106. * Check that we get an error when trying to blink an LED, since it is
  107. * not supported by the GPIO LED driver.
  108. */
  109. ut_assertok(uclass_get_device(UCLASS_LED, 1, &dev));
  110. ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
  111. ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
  112. ut_asserteq(-ENOSYS, led_set_state(dev, LEDST_BLINK));
  113. ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
  114. ut_asserteq(LEDST_OFF, led_get_state(dev));
  115. ut_asserteq(-ENOSYS, led_set_period(dev, 100));
  116. return 0;
  117. }
  118. DM_TEST(dm_test_led_blink, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
  119. #endif