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/root.h> 11 #include <dm/test.h> 12 #include <dm/util.h> 13 #include <asm/gpio.h> 14 #include <test/ut.h> 15 16 DECLARE_GLOBAL_DATA_PTR; 17 18 /* Test that sandbox GPIOs work correctly */ 19 static int dm_test_gpio(struct unit_test_state *uts) 20 { 21 unsigned int offset, gpio; 22 struct dm_gpio_ops *ops; 23 struct udevice *dev; 24 const char *name; 25 int offset_count; 26 char buf[80]; 27 28 /* 29 * We expect to get 3 banks. One is anonymous (just numbered) and 30 * comes from platdata. The other two are named a (20 gpios) 31 * and b (10 gpios) and come from the device tree. See 32 * test/dm/test.dts. 33 */ 34 ut_assertok(gpio_lookup_name("b4", &dev, &offset, &gpio)); 35 ut_asserteq_str(dev->name, "extra-gpios"); 36 ut_asserteq(4, offset); 37 ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 20 + 4, gpio); 38 39 name = gpio_get_bank_info(dev, &offset_count); 40 ut_asserteq_str("b", name); 41 ut_asserteq(10, offset_count); 42 43 /* Get the operations for this device */ 44 ops = gpio_get_ops(dev); 45 ut_assert(ops->get_function); 46 47 /* Cannot get a value until it is reserved */ 48 ut_asserteq(-EBUSY, gpio_get_value(gpio + 1)); 49 /* 50 * Now some tests that use the 'sandbox' back door. All GPIOs 51 * should default to input, include b4 that we are using here. 52 */ 53 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 54 ut_asserteq_str("b4: input: 0 [ ]", buf); 55 56 /* Change it to an output */ 57 sandbox_gpio_set_direction(dev, offset, 1); 58 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 59 ut_asserteq_str("b4: output: 0 [ ]", buf); 60 61 sandbox_gpio_set_value(dev, offset, 1); 62 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 63 ut_asserteq_str("b4: output: 1 [ ]", buf); 64 65 ut_assertok(gpio_request(gpio, "testing")); 66 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 67 ut_asserteq_str("b4: output: 1 [x] testing", buf); 68 69 /* Change the value a bit */ 70 ut_asserteq(1, ops->get_value(dev, offset)); 71 ut_assertok(ops->set_value(dev, offset, 0)); 72 ut_asserteq(0, ops->get_value(dev, offset)); 73 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 74 ut_asserteq_str("b4: output: 0 [x] testing", buf); 75 ut_assertok(ops->set_value(dev, offset, 1)); 76 ut_asserteq(1, ops->get_value(dev, offset)); 77 78 /* Make it an open drain output, and reset it */ 79 ut_asserteq(0, sandbox_gpio_get_open_drain(dev, offset)); 80 ut_assertok(ops->set_open_drain(dev, offset, 1)); 81 ut_asserteq(1, sandbox_gpio_get_open_drain(dev, offset)); 82 ut_assertok(ops->set_open_drain(dev, offset, 0)); 83 ut_asserteq(0, sandbox_gpio_get_open_drain(dev, offset)); 84 85 /* Make it an input */ 86 ut_assertok(ops->direction_input(dev, offset)); 87 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 88 ut_asserteq_str("b4: input: 1 [x] testing", buf); 89 sandbox_gpio_set_value(dev, offset, 0); 90 ut_asserteq(0, sandbox_gpio_get_value(dev, offset)); 91 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 92 ut_asserteq_str("b4: input: 0 [x] testing", buf); 93 94 ut_assertok(gpio_free(gpio)); 95 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 96 ut_asserteq_str("b4: input: 0 [ ]", buf); 97 98 /* Check the 'a' bank also */ 99 ut_assertok(gpio_lookup_name("a15", &dev, &offset, &gpio)); 100 ut_asserteq_str(dev->name, "base-gpios"); 101 ut_asserteq(15, offset); 102 ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 15, gpio); 103 104 name = gpio_get_bank_info(dev, &offset_count); 105 ut_asserteq_str("a", name); 106 ut_asserteq(20, offset_count); 107 108 return 0; 109 } 110 DM_TEST(dm_test_gpio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 111 112 /* Test that sandbox anonymous GPIOs work correctly */ 113 static int dm_test_gpio_anon(struct unit_test_state *uts) 114 { 115 unsigned int offset, gpio; 116 struct udevice *dev; 117 const char *name; 118 int offset_count; 119 120 /* And the anonymous bank */ 121 ut_assertok(gpio_lookup_name("14", &dev, &offset, &gpio)); 122 ut_asserteq_str(dev->name, "gpio_sandbox"); 123 ut_asserteq(14, offset); 124 ut_asserteq(14, gpio); 125 126 name = gpio_get_bank_info(dev, &offset_count); 127 ut_asserteq_ptr(NULL, name); 128 ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT, offset_count); 129 130 return 0; 131 } 132 DM_TEST(dm_test_gpio_anon, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 133 134 /* Test that gpio_requestf() works as expected */ 135 static int dm_test_gpio_requestf(struct unit_test_state *uts) 136 { 137 unsigned int offset, gpio; 138 struct udevice *dev; 139 char buf[80]; 140 141 ut_assertok(gpio_lookup_name("b5", &dev, &offset, &gpio)); 142 ut_assertok(gpio_requestf(gpio, "testing %d %s", 1, "hi")); 143 sandbox_gpio_set_direction(dev, offset, 1); 144 sandbox_gpio_set_value(dev, offset, 1); 145 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 146 ut_asserteq_str("b5: output: 1 [x] testing 1 hi", buf); 147 148 return 0; 149 } 150 DM_TEST(dm_test_gpio_requestf, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 151 152 /* Test that gpio_request() copies its string */ 153 static int dm_test_gpio_copy(struct unit_test_state *uts) 154 { 155 unsigned int offset, gpio; 156 struct udevice *dev; 157 char buf[80], name[10]; 158 159 ut_assertok(gpio_lookup_name("b6", &dev, &offset, &gpio)); 160 strcpy(name, "odd_name"); 161 ut_assertok(gpio_request(gpio, name)); 162 sandbox_gpio_set_direction(dev, offset, 1); 163 sandbox_gpio_set_value(dev, offset, 1); 164 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 165 ut_asserteq_str("b6: output: 1 [x] odd_name", buf); 166 strcpy(name, "nothing"); 167 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); 168 ut_asserteq_str("b6: output: 1 [x] odd_name", buf); 169 170 return 0; 171 } 172 DM_TEST(dm_test_gpio_copy, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 173 174 /* Test that we don't leak memory with GPIOs */ 175 static int dm_test_gpio_leak(struct unit_test_state *uts) 176 { 177 ut_assertok(dm_test_gpio(uts)); 178 ut_assertok(dm_test_gpio_anon(uts)); 179 ut_assertok(dm_test_gpio_requestf(uts)); 180 ut_assertok(dm_leak_check_end(uts)); 181 182 return 0; 183 } 184 DM_TEST(dm_test_gpio_leak, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 185 186 /* Test that we can find GPIOs using phandles */ 187 static int dm_test_gpio_phandles(struct unit_test_state *uts) 188 { 189 struct gpio_desc desc, desc_list[8], desc_list2[8]; 190 struct udevice *dev, *gpio_a, *gpio_b; 191 192 ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev)); 193 ut_asserteq_str("a-test", dev->name); 194 195 ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0)); 196 ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio_a)); 197 ut_assertok(uclass_get_device(UCLASS_GPIO, 2, &gpio_b)); 198 ut_asserteq_str("base-gpios", gpio_a->name); 199 ut_asserteq(true, !!device_active(gpio_a)); 200 ut_asserteq_ptr(gpio_a, desc.dev); 201 ut_asserteq(4, desc.offset); 202 /* GPIOF_INPUT is the sandbox GPIO driver default */ 203 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL)); 204 ut_assertok(dm_gpio_free(dev, &desc)); 205 206 ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 3, &desc, 207 0)); 208 ut_asserteq_ptr(NULL, desc.dev); 209 ut_asserteq(desc.offset, 0); 210 ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 5, &desc, 211 0)); 212 213 /* Last GPIO is ignord as it comes after <0> */ 214 ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list, 215 ARRAY_SIZE(desc_list), 0)); 216 ut_asserteq(-EBUSY, gpio_request_list_by_name(dev, "test-gpios", 217 desc_list2, 218 ARRAY_SIZE(desc_list2), 219 0)); 220 ut_assertok(gpio_free_list(dev, desc_list, 3)); 221 ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list, 222 ARRAY_SIZE(desc_list), 223 GPIOD_IS_OUT | 224 GPIOD_IS_OUT_ACTIVE)); 225 ut_asserteq_ptr(gpio_a, desc_list[0].dev); 226 ut_asserteq(1, desc_list[0].offset); 227 ut_asserteq_ptr(gpio_a, desc_list[1].dev); 228 ut_asserteq(4, desc_list[1].offset); 229 ut_asserteq_ptr(gpio_b, desc_list[2].dev); 230 ut_asserteq(5, desc_list[2].offset); 231 ut_asserteq(1, dm_gpio_get_value(desc_list)); 232 ut_assertok(gpio_free_list(dev, desc_list, 3)); 233 234 ut_asserteq(6, gpio_request_list_by_name(dev, "test2-gpios", desc_list, 235 ARRAY_SIZE(desc_list), 0)); 236 /* This was set to output previously, so still will be */ 237 ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_a, 1, NULL)); 238 239 /* Active low should invert the input value */ 240 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 6, NULL)); 241 ut_asserteq(1, dm_gpio_get_value(&desc_list[2])); 242 243 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 7, NULL)); 244 ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 8, NULL)); 245 ut_asserteq(0, dm_gpio_get_value(&desc_list[4])); 246 ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 9, NULL)); 247 ut_asserteq(1, dm_gpio_get_value(&desc_list[5])); 248 249 250 return 0; 251 } 252 DM_TEST(dm_test_gpio_phandles, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 253