/* * Copyright (C) 2013 Google, Inc * * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> #include <fdtdec.h> #include <dm.h> #include <dm/ut.h> #include <dm/test.h> #include <dm/util.h> #include <asm/gpio.h> /* Test that sandbox GPIOs work correctly */ static int dm_test_gpio(struct dm_test_state *dms) { unsigned int offset, gpio; struct dm_gpio_ops *ops; struct device *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_state); /* Cannot get a value until it is reserved */ ut_asserteq(-1, ops->get_value(dev, offset)); /* * Now some tests that use the 'sandbox' back door. All GPIOs * should default to input, include b4 that we are using here. */ ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: in: 0 [ ]", buf); /* Change it to an output */ sandbox_gpio_set_direction(dev, offset, 1); ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: out: 0 [ ]", buf); sandbox_gpio_set_value(dev, offset, 1); ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: out: 1 [ ]", buf); ut_assertok(ops->request(dev, offset, "testing")); ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: out: 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(ops->get_state(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: out: 0 [x] testing", buf); ut_assertok(ops->set_value(dev, offset, 1)); ut_asserteq(1, ops->get_value(dev, offset)); /* Make it an input */ ut_assertok(ops->direction_input(dev, offset)); ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: in: 1 [x] testing", buf); sandbox_gpio_set_value(dev, offset, 0); ut_asserteq(0, sandbox_gpio_get_value(dev, offset)); ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: in: 0 [x] testing", buf); ut_assertok(ops->free(dev, offset)); ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); ut_asserteq_str("b4: in: 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); /* 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, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);