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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2013 Google, Inc */ #include <common.h> #include <fdtdec.h> #include <dm.h> #include <dm/root.h> #include <dm/test.h> #include <dm/util.h> #include <asm/gpio.h> #include <test/ut.h> /* 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); |