// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2013 Google, Inc */ #include #include #include #include #include #include #include #include #include /* Test that sandbox GPIOs work correctly */ static int dm_test_gpio(struct unit_test_state *uts) { unsigned int offset, gpio; struct dm_gpio_ops *ops; struct udevice *dev; const char *name; int offset_count; char buf[80]; /* * We expect to get 3 banks. One is anonymous (just numbered) and * comes from platdata. The other two are named a (20 gpios) * and b (10 gpios) and come from the device tree. See * test/dm/test.dts. */ ut_assertok(gpio_lookup_name("b4", &dev, &offset, &gpio)); ut_asserteq_str(dev->name, "extra-gpios"); ut_asserteq(4, offset); ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 20 + 4, gpio); name = gpio_get_bank_info(dev, &offset_count); ut_asserteq_str("b", name); ut_asserteq(10, offset_count); /* Get the operations for this device */ ops = gpio_get_ops(dev); ut_assert(ops->get_function); /* Cannot get a value until it is reserved */ ut_asserteq(-EBUSY, gpio_get_value(gpio + 1)); /* * Now some tests that use the 'sandbox' back door. All GPIOs * should default to input, include b4 that we are using here. */ ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: input: 0 [ ]", buf); /* Change it to an output */ sandbox_gpio_set_direction(dev, offset, 1); ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: output: 0 [ ]", buf); sandbox_gpio_set_value(dev, offset, 1); ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: output: 1 [ ]", buf); ut_assertok(gpio_request(gpio, "testing")); ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: output: 1 [x] testing", buf); /* Change the value a bit */ ut_asserteq(1, ops->get_value(dev, offset)); ut_assertok(ops->set_value(dev, offset, 0)); ut_asserteq(0, ops->get_value(dev, offset)); ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: output: 0 [x] testing", buf); ut_assertok(ops->set_value(dev, offset, 1)); ut_asserteq(1, ops->get_value(dev, offset)); /* Make it an open drain output, and reset it */ ut_asserteq(0, sandbox_gpio_get_open_drain(dev, offset)); ut_assertok(ops->set_open_drain(dev, offset, 1)); ut_asserteq(1, sandbox_gpio_get_open_drain(dev, offset)); ut_assertok(ops->set_open_drain(dev, offset, 0)); ut_asserteq(0, sandbox_gpio_get_open_drain(dev, offset)); /* Make it an input */ ut_assertok(ops->direction_input(dev, offset)); ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: input: 1 [x] testing", buf); sandbox_gpio_set_value(dev, offset, 0); ut_asserteq(0, sandbox_gpio_get_value(dev, offset)); ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: input: 0 [x] testing", buf); ut_assertok(gpio_free(gpio)); ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: input: 0 [ ]", buf); /* Check the 'a' bank also */ ut_assertok(gpio_lookup_name("a15", &dev, &offset, &gpio)); ut_asserteq_str(dev->name, "base-gpios"); ut_asserteq(15, offset); ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 15, gpio); name = gpio_get_bank_info(dev, &offset_count); ut_asserteq_str("a", name); ut_asserteq(20, offset_count); return 0; } DM_TEST(dm_test_gpio, 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) { unsigned int offset, gpio; struct udevice *dev; const char *name; int offset_count; /* And the anonymous bank */ ut_assertok(gpio_lookup_name("14", &dev, &offset, &gpio)); ut_asserteq_str(dev->name, "gpio_sandbox"); ut_asserteq(14, offset); ut_asserteq(14, gpio); name = gpio_get_bank_info(dev, &offset_count); ut_asserteq_ptr(NULL, name); ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT, offset_count); return 0; } DM_TEST(dm_test_gpio_anon, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); /* Test that gpio_requestf() works as expected */ static int dm_test_gpio_requestf(struct unit_test_state *uts) { unsigned int offset, gpio; struct udevice *dev; char buf[80]; ut_assertok(gpio_lookup_name("b5", &dev, &offset, &gpio)); ut_assertok(gpio_requestf(gpio, "testing %d %s", 1, "hi")); sandbox_gpio_set_direction(dev, offset, 1); sandbox_gpio_set_value(dev, offset, 1); ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b5: output: 1 [x] testing 1 hi", buf); return 0; } DM_TEST(dm_test_gpio_requestf, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); /* Test that gpio_request() copies its string */ static int dm_test_gpio_copy(struct unit_test_state *uts) { unsigned int offset, gpio; struct udevice *dev; char buf[80], name[10]; ut_assertok(gpio_lookup_name("b6", &dev, &offset, &gpio)); strcpy(name, "odd_name"); ut_assertok(gpio_request(gpio, name)); sandbox_gpio_set_direction(dev, offset, 1); sandbox_gpio_set_value(dev, offset, 1); ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b6: output: 1 [x] odd_name", buf); strcpy(name, "nothing"); ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b6: output: 1 [x] odd_name", buf); return 0; } DM_TEST(dm_test_gpio_copy, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); /* Test that we don't leak memory with GPIOs */ static int dm_test_gpio_leak(struct unit_test_state *uts) { ut_assertok(dm_test_gpio(uts)); ut_assertok(dm_test_gpio_anon(uts)); ut_assertok(dm_test_gpio_requestf(uts)); ut_assertok(dm_leak_check_end(uts)); return 0; } DM_TEST(dm_test_gpio_leak, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); /* Test that we can find GPIOs using phandles */ static int dm_test_gpio_phandles(struct unit_test_state *uts) { struct gpio_desc desc, desc_list[8], desc_list2[8]; struct udevice *dev, *gpio_a, *gpio_b; ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev)); ut_asserteq_str("a-test", dev->name); ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0)); ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio_a)); ut_assertok(uclass_get_device(UCLASS_GPIO, 2, &gpio_b)); ut_asserteq_str("base-gpios", gpio_a->name); ut_asserteq(true, !!device_active(gpio_a)); ut_asserteq_ptr(gpio_a, desc.dev); ut_asserteq(4, desc.offset); /* GPIOF_INPUT is the sandbox GPIO driver default */ ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL)); ut_assertok(dm_gpio_free(dev, &desc)); ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 3, &desc, 0)); ut_asserteq_ptr(NULL, desc.dev); ut_asserteq(desc.offset, 0); ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 5, &desc, 0)); /* Last GPIO is ignord as it comes after <0> */ ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list, ARRAY_SIZE(desc_list), 0)); ut_asserteq(-EBUSY, gpio_request_list_by_name(dev, "test-gpios", desc_list2, ARRAY_SIZE(desc_list2), 0)); ut_assertok(gpio_free_list(dev, desc_list, 3)); ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list, ARRAY_SIZE(desc_list), GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE)); ut_asserteq_ptr(gpio_a, desc_list[0].dev); ut_asserteq(1, desc_list[0].offset); ut_asserteq_ptr(gpio_a, desc_list[1].dev); ut_asserteq(4, desc_list[1].offset); ut_asserteq_ptr(gpio_b, desc_list[2].dev); ut_asserteq(5, desc_list[2].offset); ut_asserteq(1, dm_gpio_get_value(desc_list)); ut_assertok(gpio_free_list(dev, desc_list, 3)); ut_asserteq(6, gpio_request_list_by_name(dev, "test2-gpios", desc_list, ARRAY_SIZE(desc_list), 0)); /* This was set to output previously, so still will be */ ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_a, 1, NULL)); /* Active low should invert the input value */ ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 6, NULL)); ut_asserteq(1, dm_gpio_get_value(&desc_list[2])); ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 7, NULL)); ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 8, NULL)); ut_asserteq(0, dm_gpio_get_value(&desc_list[4])); ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 9, NULL)); ut_asserteq(1, dm_gpio_get_value(&desc_list[5])); return 0; } DM_TEST(dm_test_gpio_phandles, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);