// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2013 Google, Inc */ #include #include #include #include #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; struct gpio_desc *desc; const char *name; int offset_count; char buf[80]; /* * We expect to get 4 banks. One is anonymous (just numbered) and * comes from platdata. The other are named a (20 gpios), * b (10 gpios) and c (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(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE, sandbox_gpio_get_dir_flags(dev, offset)); ut_assertok(ops->set_dir_flags(dev, offset, GPIOD_IS_OUT | GPIOD_OPEN_DRAIN)); ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN, sandbox_gpio_get_dir_flags(dev, offset)); ut_assertok(ops->set_dir_flags(dev, offset, GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE)); ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE, sandbox_gpio_get_dir_flags(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); /* add gpio hog tests */ ut_assertok(gpio_hog_lookup_name("hog_input_active_low", &desc)); ut_asserteq(GPIOD_IS_IN | GPIOD_ACTIVE_LOW, desc->flags); ut_asserteq(10, desc->offset); ut_asserteq(1, dm_gpio_get_value(desc)); ut_assertok(gpio_hog_lookup_name("hog_input_active_high", &desc)); ut_asserteq(GPIOD_IS_IN, desc->flags); ut_asserteq(11, desc->offset); ut_asserteq(0, dm_gpio_get_value(desc)); ut_assertok(gpio_hog_lookup_name("hog_output_low", &desc)); ut_asserteq(GPIOD_IS_OUT, desc->flags); ut_asserteq(12, desc->offset); ut_asserteq(0, dm_gpio_get_value(desc)); ut_assertok(dm_gpio_set_value(desc, 1)); ut_asserteq(1, dm_gpio_get_value(desc)); ut_assertok(gpio_hog_lookup_name("hog_output_high", &desc)); ut_asserteq(GPIOD_IS_OUT, desc->flags); ut_asserteq(13, desc->offset); ut_asserteq(1, dm_gpio_get_value(desc)); ut_assertok(dm_gpio_set_value(desc, 0)); ut_asserteq(0, dm_gpio_get_value(desc)); /* Check if lookup for labels work */ ut_assertok(gpio_lookup_name("hog_input_active_low", &dev, &offset, &gpio)); ut_asserteq_str(dev->name, "base-gpios"); ut_asserteq(10, offset); ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 10, gpio); ut_assert(gpio_lookup_name("hog_not_exist", &dev, &offset, &gpio)); return 0; } DM_TEST(dm_test_gpio, UT_TESTF_SCAN_PDATA | UT_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, UT_TESTF_SCAN_PDATA | UT_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, "sandbox_gpio"); 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, UT_TESTF_SCAN_PDATA | UT_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, UT_TESTF_SCAN_PDATA | UT_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, UT_TESTF_SCAN_PDATA | UT_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, UT_TESTF_SCAN_PDATA | UT_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_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL)); ut_assertok(gpio_free_list(dev, desc_list, 3)); ut_asserteq(GPIOF_UNUSED, gpio_get_function(gpio_a, 4, NULL)); 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(GPIOF_OUTPUT, gpio_get_function(gpio_a, 4, NULL)); 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(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE, sandbox_gpio_get_dir_flags(gpio_a, 1)); ut_asserteq(6, gpio_request_list_by_name(dev, "test2-gpios", desc_list, ARRAY_SIZE(desc_list), 0)); /* This was set to output previously but flags resetted to 0 = INPUT */ ut_asserteq(0, sandbox_gpio_get_dir_flags(gpio_a, 1)); ut_asserteq(GPIOF_INPUT, 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, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); /* Check the gpio pin configuration get from device tree information */ static int dm_test_gpio_get_dir_flags(struct unit_test_state *uts) { struct gpio_desc desc_list[6]; struct udevice *dev; ulong flags; ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev)); ut_asserteq(6, gpio_request_list_by_name(dev, "test3-gpios", desc_list, ARRAY_SIZE(desc_list), 0)); ut_assertok(dm_gpio_get_dir_flags(&desc_list[0], &flags)); ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN, flags); ut_assertok(dm_gpio_get_dir_flags(&desc_list[1], &flags)); ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_SOURCE, flags); ut_assertok(dm_gpio_get_dir_flags(&desc_list[2], &flags)); ut_asserteq(GPIOD_IS_OUT, flags); ut_assertok(dm_gpio_get_dir_flags(&desc_list[3], &flags)); ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_UP, flags); ut_assertok(dm_gpio_get_dir_flags(&desc_list[4], &flags)); ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_DOWN, flags); ut_assertok(dm_gpio_get_dir_flags(&desc_list[5], &flags)); ut_asserteq(GPIOD_IS_IN, flags); ut_assertok(gpio_free_list(dev, desc_list, 6)); return 0; } DM_TEST(dm_test_gpio_get_dir_flags, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); /* Test of gpio_get_acpi() */ static int dm_test_gpio_get_acpi(struct unit_test_state *uts) { struct acpi_gpio agpio; struct udevice *dev; struct gpio_desc desc; 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)); /* See sb_gpio_get_acpi() */ ut_assertok(gpio_get_acpi(&desc, &agpio)); ut_asserteq(1, agpio.pin_count); ut_asserteq(4, agpio.pins[0]); ut_asserteq(ACPI_GPIO_TYPE_IO, agpio.type); ut_asserteq(ACPI_GPIO_PULL_UP, agpio.pull); ut_asserteq_str("\\_SB.PINC", agpio.resource); ut_asserteq(0, agpio.interrupt_debounce_timeout); ut_asserteq(0, agpio.irq.pin); ut_asserteq(1234, agpio.output_drive_strength); ut_asserteq(true, agpio.io_shared); ut_asserteq(ACPI_GPIO_IO_RESTRICT_INPUT, agpio.io_restrict); ut_asserteq(ACPI_GPIO_ACTIVE_HIGH, agpio.polarity); return 0; } DM_TEST(dm_test_gpio_get_acpi, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); /* Test of gpio_get_acpi() with an interrupt GPIO */ static int dm_test_gpio_get_acpi_irq(struct unit_test_state *uts) { struct acpi_gpio agpio; struct udevice *dev; struct gpio_desc desc; ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev)); ut_asserteq_str("a-test", dev->name); ut_assertok(gpio_request_by_name(dev, "test2-gpios", 2, &desc, 0)); /* See sb_gpio_get_acpi() */ ut_assertok(gpio_get_acpi(&desc, &agpio)); ut_asserteq(1, agpio.pin_count); ut_asserteq(6, agpio.pins[0]); ut_asserteq(ACPI_GPIO_TYPE_INTERRUPT, agpio.type); ut_asserteq(ACPI_GPIO_PULL_DOWN, agpio.pull); ut_asserteq_str("\\_SB.PINC", agpio.resource); ut_asserteq(4321, agpio.interrupt_debounce_timeout); ut_asserteq(6, agpio.irq.pin); ut_asserteq(ACPI_IRQ_ACTIVE_BOTH, agpio.irq.polarity); ut_asserteq(ACPI_IRQ_SHARED, agpio.irq.shared); ut_asserteq(true, agpio.irq.wake); ut_asserteq(0, agpio.output_drive_strength); ut_asserteq(false, agpio.io_shared); ut_asserteq(0, agpio.io_restrict); ut_asserteq(ACPI_GPIO_ACTIVE_LOW, agpio.polarity); return 0; } DM_TEST(dm_test_gpio_get_acpi_irq, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); /* Test that we can get/release GPIOs using managed API */ static int dm_test_gpio_devm(struct unit_test_state *uts) { static const u32 flags = GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE; struct gpio_desc *desc1, *desc2, *desc3, *desc_err; struct udevice *dev; struct udevice *dev2; ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test", &dev)); ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "another-test", &dev2)); /* Get 3 GPIOs from 'a-test' dev */ desc1 = devm_gpiod_get_index(dev, "test4", 0, flags); ut_assert(!IS_ERR(desc1)); desc2 = devm_gpiod_get_index(dev, "test4", 1, flags); ut_assert(!IS_ERR(desc2)); desc3 = devm_gpiod_get_index_optional(dev, "test5", 0, flags); ut_assert(!IS_ERR(desc3)); ut_assert(desc3); /* * Try get the same 3 GPIOs from 'a-test' and 'another-test' devices. * check that it fails */ desc_err = devm_gpiod_get_index(dev, "test4", 0, flags); ut_asserteq(-EBUSY, PTR_ERR(desc_err)); desc_err = devm_gpiod_get_index(dev2, "test4", 0, flags); ut_asserteq(-EBUSY, PTR_ERR(desc_err)); desc_err = devm_gpiod_get_index(dev, "test4", 1, flags); ut_asserteq(-EBUSY, PTR_ERR(desc_err)); desc_err = devm_gpiod_get_index(dev2, "test4", 1, flags); ut_asserteq(-EBUSY, PTR_ERR(desc_err)); desc_err = devm_gpiod_get_index_optional(dev, "test5", 0, flags); ut_asserteq_ptr(NULL, desc_err); desc_err = devm_gpiod_get_index_optional(dev2, "test5", 0, flags); ut_asserteq_ptr(NULL, desc_err); /* Try get GPIOs outside of the list */ desc_err = devm_gpiod_get_index(dev, "test4", 2, flags); ut_assert(IS_ERR(desc_err)); desc_err = devm_gpiod_get_index_optional(dev, "test5", 1, flags); ut_asserteq_ptr(NULL, desc_err); /* Manipulate the GPIOs */ ut_assertok(dm_gpio_set_value(desc1, 1)); ut_asserteq(1, dm_gpio_get_value(desc1)); ut_assertok(dm_gpio_set_value(desc1, 0)); ut_asserteq(0, dm_gpio_get_value(desc1)); ut_assertok(dm_gpio_set_value(desc2, 1)); ut_asserteq(1, dm_gpio_get_value(desc2)); ut_assertok(dm_gpio_set_value(desc2, 0)); ut_asserteq(0, dm_gpio_get_value(desc2)); ut_assertok(dm_gpio_set_value(desc3, 1)); ut_asserteq(1, dm_gpio_get_value(desc3)); ut_assertok(dm_gpio_set_value(desc3, 0)); ut_asserteq(0, dm_gpio_get_value(desc3)); /* Check that the GPIO cannot be owned by more than one device */ desc_err = devm_gpiod_get_index(dev2, "test4", 0, flags); ut_asserteq(-EBUSY, PTR_ERR(desc_err)); desc_err = devm_gpiod_get_index(dev2, "test4", 1, flags); ut_asserteq(-EBUSY, PTR_ERR(desc_err)); desc_err = devm_gpiod_get_index_optional(dev2, "test5", 0, flags); ut_asserteq_ptr(NULL, desc_err); /* * Release one GPIO and check that we can get it back using * 'another-test' and then 'a-test' */ devm_gpiod_put(dev, desc2); desc2 = devm_gpiod_get_index(dev2, "test4", 1, flags); ut_assert(!IS_ERR(desc2)); devm_gpiod_put(dev2, desc2); desc2 = devm_gpiod_get_index(dev, "test4", 1, flags); ut_assert(!IS_ERR(desc2)); /* Release one GPIO before removing the 'a-test' dev. */ devm_gpiod_put(dev, desc2); device_remove(dev, DM_REMOVE_NORMAL); /* All the GPIOs must have been freed. We should be able to claim * them with the 'another-test' device. */ desc1 = devm_gpiod_get_index(dev2, "test4", 0, flags); ut_assert(!IS_ERR(desc1)); desc2 = devm_gpiod_get_index(dev2, "test4", 1, flags); ut_assert(!IS_ERR(desc2)); desc3 = devm_gpiod_get_index_optional(dev2, "test5", 0, flags); ut_assert(!IS_ERR(desc3)); ut_assert(desc3); device_remove(dev2, DM_REMOVE_NORMAL); return 0; } DM_TEST(dm_test_gpio_devm, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);