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