Add tests for testing open-drain/open-source emulation in gpio-uclass. It also adds two test3-gpios configured as GPIO_ACTIVE_LOW.
Signed-off-by: Neil Armstrong narmstrong@baylibre.com --- arch/sandbox/dts/test.dts | 4 +- test/dm/gpio.c | 89 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 92 insertions(+), 1 deletion(-)
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index 4bccfbe6e1..e9b9404363 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -104,7 +104,9 @@ <&gpio_c 2 GPIO_OUT>, <&gpio_c 3 (GPIO_IN|GPIO_PULL_UP)>, <&gpio_c 4 (GPIO_IN|GPIO_PULL_DOWN)>, - <&gpio_c 5 GPIO_IN>; + <&gpio_c 5 GPIO_IN>, + <&gpio_c 6 (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_DRAIN)>, + <&gpio_c 7 (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_SOURCE)>; int-value = <1234>; uint-value = <(-1234)>; int64-value = /bits/ 64 <0x1111222233334444>; diff --git a/test/dm/gpio.c b/test/dm/gpio.c index f5c7aaf3bc..7c18e5c411 100644 --- a/test/dm/gpio.c +++ b/test/dm/gpio.c @@ -112,6 +112,95 @@ static int dm_test_gpio(struct unit_test_state *uts) } DM_TEST(dm_test_gpio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+/* Test that GPIO open-drain/open-source emulation works correctly */ +static int dm_test_gpio_opendrain_opensource(struct unit_test_state *uts) +{ + struct gpio_desc desc_list[8]; + struct udevice *dev, *gpio_c; + char buf[80]; + + ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev)); + ut_asserteq_str("a-test", dev->name); + + ut_assertok(uclass_get_device(UCLASS_GPIO, 3, &gpio_c)); + ut_asserteq_str("pinmux-gpios", gpio_c->name); + + ut_asserteq(8, gpio_request_list_by_name(dev, "test3-gpios", desc_list, + ARRAY_SIZE(desc_list), 0)) + + ut_asserteq(true, !!device_active(gpio_c)); + ut_asserteq_ptr(gpio_c, desc_list[0].dev); + ut_asserteq_ptr(gpio_c, desc_list[1].dev); + ut_asserteq_ptr(gpio_c, desc_list[2].dev); + ut_asserteq_ptr(gpio_c, desc_list[3].dev); + ut_asserteq_ptr(gpio_c, desc_list[4].dev); + ut_asserteq_ptr(gpio_c, desc_list[5].dev); + ut_asserteq_ptr(gpio_c, desc_list[6].dev); + ut_asserteq_ptr(gpio_c, desc_list[7].dev); + + /* GPIO 0 is (GPIO_OUT|GPIO_OPEN_DRAIN) */ + ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN, + sandbox_gpio_get_dir_flags(gpio_c, 0)); + + /* Set it as output high, should become an input */ + ut_assertok(dm_gpio_set_value(&desc_list[0], 1)); + ut_assertok(gpio_get_status(gpio_c, 0, buf, sizeof(buf))); + ut_asserteq_str("c0: input: 0 [x] a-test.test3-gpios0", buf); + + /* Set it as output low, should become output low */ + ut_assertok(dm_gpio_set_value(&desc_list[0], 0)); + ut_assertok(gpio_get_status(gpio_c, 0, buf, sizeof(buf))); + ut_asserteq_str("c0: output: 0 [x] a-test.test3-gpios0", buf); + + /* GPIO 1 is (GPIO_OUT|GPIO_OPEN_SOURCE) */ + ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_SOURCE, + sandbox_gpio_get_dir_flags(gpio_c, 1)); + + /* Set it as output high, should become output high */ + ut_assertok(dm_gpio_set_value(&desc_list[1], 1)); + ut_assertok(gpio_get_status(gpio_c, 1, buf, sizeof(buf))); + ut_asserteq_str("c1: output: 1 [x] a-test.test3-gpios1", buf); + + /* Set it as output low, should become an input */ + ut_assertok(dm_gpio_set_value(&desc_list[1], 0)); + ut_assertok(gpio_get_status(gpio_c, 1, buf, sizeof(buf))); + ut_asserteq_str("c1: input: 1 [x] a-test.test3-gpios1", buf); + + /* GPIO 6 is (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_DRAIN) */ + ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_DRAIN, + sandbox_gpio_get_dir_flags(gpio_c, 6)); + + /* Set it as output high, should become output low */ + ut_assertok(dm_gpio_set_value(&desc_list[6], 1)); + ut_assertok(gpio_get_status(gpio_c, 6, buf, sizeof(buf))); + ut_asserteq_str("c6: output: 0 [x] a-test.test3-gpios6", buf); + + /* Set it as output low, should become an input */ + ut_assertok(dm_gpio_set_value(&desc_list[6], 0)); + ut_assertok(gpio_get_status(gpio_c, 6, buf, sizeof(buf))); + ut_asserteq_str("c6: input: 0 [x] a-test.test3-gpios6", buf); + + /* GPIO 7 is (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_SOURCE) */ + ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_SOURCE, + sandbox_gpio_get_dir_flags(gpio_c, 7)); + + /* Set it as output high, should become an input */ + ut_assertok(dm_gpio_set_value(&desc_list[7], 1)); + ut_assertok(gpio_get_status(gpio_c, 7, buf, sizeof(buf))); + ut_asserteq_str("c7: input: 0 [x] a-test.test3-gpios7", buf); + + /* Set it as output low, should become output high */ + ut_assertok(dm_gpio_set_value(&desc_list[7], 0)); + ut_assertok(gpio_get_status(gpio_c, 7, buf, sizeof(buf))); + ut_asserteq_str("c7: output: 1 [x] a-test.test3-gpios7", buf); + + ut_assertok(gpio_free_list(dev, desc_list, 8)); + + return 0; +} +DM_TEST(dm_test_gpio_opendrain_opensource, + DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); + /* Test that sandbox anonymous GPIOs work correctly */ static int dm_test_gpio_anon(struct unit_test_state *uts) {