1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2013 Google, Inc 4 */ 5 6 #include <common.h> 7 #include <fdtdec.h> 8 #include <dm.h> 9 #include <dm/root.h> 10 #include <dm/test.h> 11 #include <dm/util.h> 12 #include <asm/gpio.h> 13 #include <test/ut.h> 14 15 /* Test that sandbox GPIOs work correctly */ 16 static int dm_test_gpio(struct unit_test_state *uts) 17 { 18 unsigned int offset, gpio; 19 struct dm_gpio_ops *ops; 20 struct udevice *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_function); 43 44 /* Cannot get a value until it is reserved */ 45 ut_asserteq(-EBUSY, gpio_get_value(gpio + 1)); 46 /* 47 * Now some tests that use the 'sandbox' back door. All GPIOs 48 * should default to input, include b4 that we are using here. 49 */ 50 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 51 ut_asserteq_str("b4: input: 0 [ ]", buf); 52 53 /* Change it to an output */ 54 sandbox_gpio_set_direction(dev, offset, 1); 55 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 56 ut_asserteq_str("b4: output: 0 [ ]", buf); 57 58 sandbox_gpio_set_value(dev, offset, 1); 59 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 60 ut_asserteq_str("b4: output: 1 [ ]", buf); 61 62 ut_assertok(gpio_request(gpio, "testing")); 63 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 64 ut_asserteq_str("b4: output: 1 [x] testing", buf); 65 66 /* Change the value a bit */ 67 ut_asserteq(1, ops->get_value(dev, offset)); 68 ut_assertok(ops->set_value(dev, offset, 0)); 69 ut_asserteq(0, ops->get_value(dev, offset)); 70 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 71 ut_asserteq_str("b4: output: 0 [x] testing", buf); 72 ut_assertok(ops->set_value(dev, offset, 1)); 73 ut_asserteq(1, ops->get_value(dev, offset)); 74 75 /* Make it an open drain output, and reset it */ 76 ut_asserteq(0, sandbox_gpio_get_open_drain(dev, offset)); 77 ut_assertok(ops->set_open_drain(dev, offset, 1)); 78 ut_asserteq(1, sandbox_gpio_get_open_drain(dev, offset)); 79 ut_assertok(ops->set_open_drain(dev, offset, 0)); 80 ut_asserteq(0, sandbox_gpio_get_open_drain(dev, offset)); 81 82 /* Make it an input */ 83 ut_assertok(ops->direction_input(dev, offset)); 84 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 85 ut_asserteq_str("b4: input: 1 [x] testing", buf); 86 sandbox_gpio_set_value(dev, offset, 0); 87 ut_asserteq(0, sandbox_gpio_get_value(dev, offset)); 88 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 89 ut_asserteq_str("b4: input: 0 [x] testing", buf); 90 91 ut_assertok(gpio_free(gpio)); 92 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 93 ut_asserteq_str("b4: input: 0 [ ]", buf); 94 95 /* Check the 'a' bank also */ 96 ut_assertok(gpio_lookup_name("a15", &dev, &offset, &gpio)); 97 ut_asserteq_str(dev->name, "base-gpios"); 98 ut_asserteq(15, offset); 99 ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 15, gpio); 100 101 name = gpio_get_bank_info(dev, &offset_count); 102 ut_asserteq_str("a", name); 103 ut_asserteq(20, offset_count); 104 105 return 0; 106 } 107 DM_TEST(dm_test_gpio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 108 109 /* Test that sandbox anonymous GPIOs work correctly */ 110 static int dm_test_gpio_anon(struct unit_test_state *uts) 111 { 112 unsigned int offset, gpio; 113 struct udevice *dev; 114 const char *name; 115 int offset_count; 116 117 /* And the anonymous bank */ 118 ut_assertok(gpio_lookup_name("14", &dev, &offset, &gpio)); 119 ut_asserteq_str(dev->name, "gpio_sandbox"); 120 ut_asserteq(14, offset); 121 ut_asserteq(14, gpio); 122 123 name = gpio_get_bank_info(dev, &offset_count); 124 ut_asserteq_ptr(NULL, name); 125 ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT, offset_count); 126 127 return 0; 128 } 129 DM_TEST(dm_test_gpio_anon, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 130 131 /* Test that gpio_requestf() works as expected */ 132 static int dm_test_gpio_requestf(struct unit_test_state *uts) 133 { 134 unsigned int offset, gpio; 135 struct udevice *dev; 136 char buf[80]; 137 138 ut_assertok(gpio_lookup_name("b5", &dev, &offset, &gpio)); 139 ut_assertok(gpio_requestf(gpio, "testing %d %s", 1, "hi")); 140 sandbox_gpio_set_direction(dev, offset, 1); 141 sandbox_gpio_set_value(dev, offset, 1); 142 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 143 ut_asserteq_str("b5: output: 1 [x] testing 1 hi", buf); 144 145 return 0; 146 } 147 DM_TEST(dm_test_gpio_requestf, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 148 149 /* Test that gpio_request() copies its string */ 150 static int dm_test_gpio_copy(struct unit_test_state *uts) 151 { 152 unsigned int offset, gpio; 153 struct udevice *dev; 154 char buf[80], name[10]; 155 156 ut_assertok(gpio_lookup_name("b6", &dev, &offset, &gpio)); 157 strcpy(name, "odd_name"); 158 ut_assertok(gpio_request(gpio, name)); 159 sandbox_gpio_set_direction(dev, offset, 1); 160 sandbox_gpio_set_value(dev, offset, 1); 161 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 162 ut_asserteq_str("b6: output: 1 [x] odd_name", buf); 163 strcpy(name, "nothing"); 164 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 165 ut_asserteq_str("b6: output: 1 [x] odd_name", buf); 166 167 return 0; 168 } 169 DM_TEST(dm_test_gpio_copy, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 170 171 /* Test that we don't leak memory with GPIOs */ 172 static int dm_test_gpio_leak(struct unit_test_state *uts) 173 { 174 ut_assertok(dm_test_gpio(uts)); 175 ut_assertok(dm_test_gpio_anon(uts)); 176 ut_assertok(dm_test_gpio_requestf(uts)); 177 ut_assertok(dm_leak_check_end(uts)); 178 179 return 0; 180 } 181 DM_TEST(dm_test_gpio_leak, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 182 183 /* Test that we can find GPIOs using phandles */ 184 static int dm_test_gpio_phandles(struct unit_test_state *uts) 185 { 186 struct gpio_desc desc, desc_list[8], desc_list2[8]; 187 struct udevice *dev, *gpio_a, *gpio_b; 188 189 ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev)); 190 ut_asserteq_str("a-test", dev->name); 191 192 ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0)); 193 ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio_a)); 194 ut_assertok(uclass_get_device(UCLASS_GPIO, 2, &gpio_b)); 195 ut_asserteq_str("base-gpios", gpio_a->name); 196 ut_asserteq(true, !!device_active(gpio_a)); 197 ut_asserteq_ptr(gpio_a, desc.dev); 198 ut_asserteq(4, desc.offset); 199 /* GPIOF_INPUT is the sandbox GPIO driver default */ 200 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL)); 201 ut_assertok(dm_gpio_free(dev, &desc)); 202 203 ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 3, &desc, 204 0)); 205 ut_asserteq_ptr(NULL, desc.dev); 206 ut_asserteq(desc.offset, 0); 207 ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 5, &desc, 208 0)); 209 210 /* Last GPIO is ignord as it comes after <0> */ 211 ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list, 212 ARRAY_SIZE(desc_list), 0)); 213 ut_asserteq(-EBUSY, gpio_request_list_by_name(dev, "test-gpios", 214 desc_list2, 215 ARRAY_SIZE(desc_list2), 216 0)); 217 ut_assertok(gpio_free_list(dev, desc_list, 3)); 218 ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list, 219 ARRAY_SIZE(desc_list), 220 GPIOD_IS_OUT | 221 GPIOD_IS_OUT_ACTIVE)); 222 ut_asserteq_ptr(gpio_a, desc_list[0].dev); 223 ut_asserteq(1, desc_list[0].offset); 224 ut_asserteq_ptr(gpio_a, desc_list[1].dev); 225 ut_asserteq(4, desc_list[1].offset); 226 ut_asserteq_ptr(gpio_b, desc_list[2].dev); 227 ut_asserteq(5, desc_list[2].offset); 228 ut_asserteq(1, dm_gpio_get_value(desc_list)); 229 ut_assertok(gpio_free_list(dev, desc_list, 3)); 230 231 ut_asserteq(6, gpio_request_list_by_name(dev, "test2-gpios", desc_list, 232 ARRAY_SIZE(desc_list), 0)); 233 /* This was set to output previously, so still will be */ 234 ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_a, 1, NULL)); 235 236 /* Active low should invert the input value */ 237 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 6, NULL)); 238 ut_asserteq(1, dm_gpio_get_value(&desc_list[2])); 239 240 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 7, NULL)); 241 ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 8, NULL)); 242 ut_asserteq(0, dm_gpio_get_value(&desc_list[4])); 243 ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 9, NULL)); 244 ut_asserteq(1, dm_gpio_get_value(&desc_list[5])); 245 246 247 return 0; 248 } 249 DM_TEST(dm_test_gpio_phandles, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 250