diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/dm/gpio.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/test/dm/gpio.c b/test/dm/gpio.c index be5da95304..33ae98701f 100644 --- a/test/dm/gpio.c +++ b/test/dm/gpio.c @@ -680,3 +680,101 @@ static int dm_test_clrset_flags_invert(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_clrset_flags_invert, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); + +static int set_gpios(struct unit_test_state *uts, struct gpio_desc *desc, + int count, uint value) +{ + int i; + + for (i = 0; i < count; i++) { + const uint mask = 1 << i; + + ut_assertok(sandbox_gpio_set_value(desc[i].dev, desc[i].offset, + value & mask)); + } + + return 0; +} + +/* Check that an active-low GPIO works as expected */ +static int dm_test_gpio_get_values_as_int(struct unit_test_state *uts) +{ + const int gpio_count = 3; + struct gpio_desc desc[gpio_count]; + struct udevice *dev; + + ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev)); + ut_asserteq_str("a-test", dev->name); + + ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc, + gpio_count, GPIOD_IS_IN)); + ut_assertok(set_gpios(uts, desc, gpio_count, 0)); + ut_asserteq(0, dm_gpio_get_values_as_int(desc, gpio_count)); + + ut_assertok(set_gpios(uts, desc, gpio_count, 5)); + ut_asserteq(5, dm_gpio_get_values_as_int(desc, gpio_count)); + + ut_assertok(set_gpios(uts, desc, gpio_count, 7)); + ut_asserteq(7, dm_gpio_get_values_as_int(desc, gpio_count)); + + return 0; +} +DM_TEST(dm_test_gpio_get_values_as_int, + UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); + +/* Check that an active-low GPIO works as expected */ +static int dm_test_gpio_get_values_as_int_base3(struct unit_test_state *uts) +{ + const int gpio_count = 3; + struct gpio_desc desc[gpio_count]; + struct udevice *dev; + + ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev)); + ut_asserteq_str("a-test", dev->name); + + ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc, + gpio_count, GPIOD_IS_IN)); + + /* + * First test the sandbox GPIO driver works as expected. The external + * pull resistor should be stronger than the internal one. + */ + sandbox_gpio_set_flags(desc[0].dev, desc[0].offset, + GPIOD_IS_IN | GPIOD_EXT_PULL_UP | GPIOD_PULL_UP); + ut_asserteq(1, dm_gpio_get_value(desc)); + + sandbox_gpio_set_flags(desc[0].dev, desc[0].offset, GPIOD_IS_IN | + GPIOD_EXT_PULL_DOWN | GPIOD_PULL_UP); + ut_asserteq(0, dm_gpio_get_value(desc)); + + sandbox_gpio_set_flags(desc[0].dev, desc[0].offset, + GPIOD_IS_IN | GPIOD_PULL_UP); + ut_asserteq(1, dm_gpio_get_value(desc)); + + sandbox_gpio_set_flags(desc[0].dev, desc[0].offset, GPIOD_PULL_DOWN); + ut_asserteq(0, dm_gpio_get_value(desc)); + + /* + * Set up pins: pull-up (1), pull-down (0) and floating (2). This should + * result in digits 2 0 1, i.e. 2 * 9 + 1 * 3 = 19 + */ + sandbox_gpio_set_flags(desc[0].dev, desc[0].offset, GPIOD_EXT_PULL_UP); + sandbox_gpio_set_flags(desc[1].dev, desc[1].offset, + GPIOD_EXT_PULL_DOWN); + sandbox_gpio_set_flags(desc[2].dev, desc[2].offset, 0); + ut_asserteq(19, dm_gpio_get_values_as_int_base3(desc, gpio_count)); + + /* + * Set up pins: floating (2), pull-up (1) and pull-down (0). This should + * result in digits 0 1 2, i.e. 1 * 3 + 2 = 5 + */ + sandbox_gpio_set_flags(desc[0].dev, desc[0].offset, 0); + sandbox_gpio_set_flags(desc[1].dev, desc[1].offset, GPIOD_EXT_PULL_UP); + sandbox_gpio_set_flags(desc[2].dev, desc[2].offset, + GPIOD_EXT_PULL_DOWN); + ut_asserteq(5, dm_gpio_get_values_as_int_base3(desc, gpio_count)); + + return 0; +} +DM_TEST(dm_test_gpio_get_values_as_int_base3, + UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); |