1 /* 2 * Copyright (C) 2013 Google, Inc 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <fdtdec.h> 9 #include <dm.h> 10 #include <dm/ut.h> 11 #include <dm/test.h> 12 #include <dm/util.h> 13 #include <asm/gpio.h> 14 15 /* Test that sandbox GPIOs work correctly */ 16 static int dm_test_gpio(struct dm_test_state *dms) 17 { 18 unsigned int offset, gpio; 19 struct dm_gpio_ops *ops; 20 struct device *dev; 21 const char *name; 22 int offset_count; 23 char buf[80]; 24 25 /* 26 * We expect to get 3 banks. One is anonymous (just numbered) and 27 * comes from platdata. The other two are named a (20 gpios) 28 * and b (10 gpios) and come from the device tree. See 29 * test/dm/test.dts. 30 */ 31 ut_assertok(gpio_lookup_name("b4", &dev, &offset, &gpio)); 32 ut_asserteq_str(dev->name, "extra-gpios"); 33 ut_asserteq(4, offset); 34 ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 20 + 4, gpio); 35 36 name = gpio_get_bank_info(dev, &offset_count); 37 ut_asserteq_str("b", name); 38 ut_asserteq(10, offset_count); 39 40 /* Get the operations for this device */ 41 ops = gpio_get_ops(dev); 42 ut_assert(ops->get_state); 43 44 /* Cannot get a value until it is reserved */ 45 ut_asserteq(-1, ops->get_value(dev, offset)); 46 47 /* 48 * Now some tests that use the 'sandbox' back door. All GPIOs 49 * should default to input, include b4 that we are using here. 50 */ 51 ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); 52 ut_asserteq_str("b4: in: 0 [ ]", buf); 53 54 /* Change it to an output */ 55 sandbox_gpio_set_direction(dev, offset, 1); 56 ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); 57 ut_asserteq_str("b4: out: 0 [ ]", buf); 58 59 sandbox_gpio_set_value(dev, offset, 1); 60 ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); 61 ut_asserteq_str("b4: out: 1 [ ]", buf); 62 63 ut_assertok(ops->request(dev, offset, "testing")); 64 ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); 65 ut_asserteq_str("b4: out: 1 [x] testing", buf); 66 67 /* Change the value a bit */ 68 ut_asserteq(1, ops->get_value(dev, offset)); 69 ut_assertok(ops->set_value(dev, offset, 0)); 70 ut_asserteq(0, ops->get_value(dev, offset)); 71 ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); 72 ut_asserteq_str("b4: out: 0 [x] testing", buf); 73 ut_assertok(ops->set_value(dev, offset, 1)); 74 ut_asserteq(1, ops->get_value(dev, offset)); 75 76 /* Make it an input */ 77 ut_assertok(ops->direction_input(dev, offset)); 78 ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); 79 ut_asserteq_str("b4: in: 1 [x] testing", buf); 80 sandbox_gpio_set_value(dev, offset, 0); 81 ut_asserteq(0, sandbox_gpio_get_value(dev, offset)); 82 ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); 83 ut_asserteq_str("b4: in: 0 [x] testing", buf); 84 85 ut_assertok(ops->free(dev, offset)); 86 ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf))); 87 ut_asserteq_str("b4: in: 0 [ ]", buf); 88 89 /* Check the 'a' bank also */ 90 ut_assertok(gpio_lookup_name("a15", &dev, &offset, &gpio)); 91 ut_asserteq_str(dev->name, "base-gpios"); 92 ut_asserteq(15, offset); 93 ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 15, gpio); 94 95 name = gpio_get_bank_info(dev, &offset_count); 96 ut_asserteq_str("a", name); 97 ut_asserteq(20, offset_count); 98 99 /* And the anonymous bank */ 100 ut_assertok(gpio_lookup_name("14", &dev, &offset, &gpio)); 101 ut_asserteq_str(dev->name, "gpio_sandbox"); 102 ut_asserteq(14, offset); 103 ut_asserteq(14, gpio); 104 105 name = gpio_get_bank_info(dev, &offset_count); 106 ut_asserteq_ptr(NULL, name); 107 ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT, offset_count); 108 109 return 0; 110 } 111 DM_TEST(dm_test_gpio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 112