test/dm/led.c

   1 /*
   2  * Copyright (C) 2015 Google, Inc
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <led.h>
  10 #include <asm/gpio.h>
  11 #include <dm/test.h>
  12 #include <test/ut.h>
  13
  14 DECLARE_GLOBAL_DATA_PTR;
  15
  16 /* Base test of the led uclass */
  17 static int dm_test_led_base(struct unit_test_state *uts)
  18 {
  19         struct udevice *dev;
  20
  21         /* Get the top-level device */
  22         ut_assertok(uclass_get_device(UCLASS_LED, 0, &dev));
  23         ut_assertok(uclass_get_device(UCLASS_LED, 1, &dev));
  24         ut_assertok(uclass_get_device(UCLASS_LED, 2, &dev));
  25         ut_asserteq(-ENODEV, uclass_get_device(UCLASS_LED, 3, &dev));
  26
  27         return 0;
  28 }
  29 DM_TEST(dm_test_led_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
  30
  31 /* Test of the led uclass using the led_gpio driver */
  32 static int dm_test_led_gpio(struct unit_test_state *uts)
  33 {
  34         const int offset = 1;
  35         struct udevice *dev, *gpio;
  36
  37         /*
  38          * Check that we can manipulate an LED. LED 1 is connected to GPIO
  39          * bank gpio_a, offset 1.
  40          */
  41         ut_assertok(uclass_get_device(UCLASS_LED, 1, &dev));
  42         ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
  43         ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
  44         ut_assertok(led_set_state(dev, LEDST_ON));
  45         ut_asserteq(1, sandbox_gpio_get_value(gpio, offset));
  46         ut_asserteq(LEDST_ON, led_get_state(dev));
  47
  48         ut_assertok(led_set_state(dev, LEDST_OFF));
  49         ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
  50         ut_asserteq(LEDST_OFF, led_get_state(dev));
  51
  52         return 0;
  53 }
  54 DM_TEST(dm_test_led_gpio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
  55
  56 /* Test that we can toggle LEDs */
  57 static int dm_test_led_toggle(struct unit_test_state *uts)
  58 {
  59         const int offset = 1;
  60         struct udevice *dev, *gpio;
  61
  62         /*
  63          * Check that we can manipulate an LED. LED 1 is connected to GPIO
  64          * bank gpio_a, offset 1.
  65          */
  66         ut_assertok(uclass_get_device(UCLASS_LED, 1, &dev));
  67         ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
  68         ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
  69         ut_assertok(led_set_state(dev, LEDST_TOGGLE));
  70         ut_asserteq(1, sandbox_gpio_get_value(gpio, offset));
  71         ut_asserteq(LEDST_ON, led_get_state(dev));
  72
  73         ut_assertok(led_set_state(dev, LEDST_TOGGLE));
  74         ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
  75         ut_asserteq(LEDST_OFF, led_get_state(dev));
  76
  77         return 0;
  78 }
  79 DM_TEST(dm_test_led_toggle, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
  80
  81 /* Test obtaining an LED by label */
  82 static int dm_test_led_label(struct unit_test_state *uts)
  83 {
  84         struct udevice *dev, *cmp;
  85
  86         ut_assertok(led_get_by_label("sandbox:red", &dev));
  87         ut_asserteq(1, device_active(dev));
  88         ut_assertok(uclass_get_device(UCLASS_LED, 1, &cmp));
  89         ut_asserteq_ptr(dev, cmp);
  90
  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
  96         ut_asserteq(-ENODEV, led_get_by_label("sandbox:blue", &dev));
  97
  98         return 0;
  99 }
 100 DM_TEST(dm_test_led_label, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
 101
 102 /* Test LED blinking */
 103 #ifdef CONFIG_LED_BLINK
 104 static int dm_test_led_blink(struct unit_test_state *uts)
 105 {
 106         const int offset = 1;
 107         struct udevice *dev, *gpio;
 108
 109         /*
 110          * Check that we get an error when trying to blink an LED, since it is
 111          * not supported by the GPIO LED driver.
 112          */
 113         ut_assertok(uclass_get_device(UCLASS_LED, 1, &dev));
 114         ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
 115         ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
 116         ut_asserteq(-ENOSYS, led_set_state(dev, LEDST_BLINK));
 117         ut_asserteq(0, sandbox_gpio_get_value(gpio, offset));
 118         ut_asserteq(LEDST_OFF, led_get_state(dev));
 119         ut_asserteq(-ENOSYS, led_set_period(dev, 100));
 120
 121         return 0;
 122 }
 123 DM_TEST(dm_test_led_blink, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
 124 #endif