1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2013 Google, Inc
16 /* Test that sandbox GPIOs work correctly */
17 static int dm_test_gpio(struct unit_test_state *uts)
19 unsigned int offset, gpio;
20 struct dm_gpio_ops *ops;
27 * We expect to get 4 banks. One is anonymous (just numbered) and
28 * comes from platdata. The other are named a (20 gpios),
29 * b (10 gpios) and c (10 gpios) and come from the device tree. See
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);
37 name = gpio_get_bank_info(dev, &offset_count);
38 ut_asserteq_str("b", name);
39 ut_asserteq(10, offset_count);
41 /* Get the operations for this device */
42 ops = gpio_get_ops(dev);
43 ut_assert(ops->get_function);
45 /* Cannot get a value until it is reserved */
46 ut_asserteq(-EBUSY, gpio_get_value(gpio + 1));
48 * Now some tests that use the 'sandbox' back door. All GPIOs
49 * should default to input, include b4 that we are using here.
51 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
52 ut_asserteq_str("b4: input: 0 [ ]", buf);
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);
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);
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);
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));
76 /* Make it an open drain output, and reset it */
77 ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE,
78 sandbox_gpio_get_dir_flags(dev, offset));
79 ut_assertok(ops->set_dir_flags(dev, offset,
80 GPIOD_IS_OUT | GPIOD_OPEN_DRAIN));
81 ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
82 sandbox_gpio_get_dir_flags(dev, offset));
83 ut_assertok(ops->set_dir_flags(dev, offset,
84 GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE));
85 ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE,
86 sandbox_gpio_get_dir_flags(dev, offset));
88 /* Make it an input */
89 ut_assertok(ops->direction_input(dev, offset));
90 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
91 ut_asserteq_str("b4: input: 1 [x] testing", buf);
92 sandbox_gpio_set_value(dev, offset, 0);
93 ut_asserteq(0, sandbox_gpio_get_value(dev, offset));
94 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
95 ut_asserteq_str("b4: input: 0 [x] testing", buf);
97 ut_assertok(gpio_free(gpio));
98 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
99 ut_asserteq_str("b4: input: 0 [ ]", buf);
101 /* Check the 'a' bank also */
102 ut_assertok(gpio_lookup_name("a15", &dev, &offset, &gpio));
103 ut_asserteq_str(dev->name, "base-gpios");
104 ut_asserteq(15, offset);
105 ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 15, gpio);
107 name = gpio_get_bank_info(dev, &offset_count);
108 ut_asserteq_str("a", name);
109 ut_asserteq(20, offset_count);
113 DM_TEST(dm_test_gpio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
115 /* Test that sandbox anonymous GPIOs work correctly */
116 static int dm_test_gpio_anon(struct unit_test_state *uts)
118 unsigned int offset, gpio;
123 /* And the anonymous bank */
124 ut_assertok(gpio_lookup_name("14", &dev, &offset, &gpio));
125 ut_asserteq_str(dev->name, "gpio_sandbox");
126 ut_asserteq(14, offset);
127 ut_asserteq(14, gpio);
129 name = gpio_get_bank_info(dev, &offset_count);
130 ut_asserteq_ptr(NULL, name);
131 ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT, offset_count);
135 DM_TEST(dm_test_gpio_anon, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
137 /* Test that gpio_requestf() works as expected */
138 static int dm_test_gpio_requestf(struct unit_test_state *uts)
140 unsigned int offset, gpio;
144 ut_assertok(gpio_lookup_name("b5", &dev, &offset, &gpio));
145 ut_assertok(gpio_requestf(gpio, "testing %d %s", 1, "hi"));
146 sandbox_gpio_set_direction(dev, offset, 1);
147 sandbox_gpio_set_value(dev, offset, 1);
148 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
149 ut_asserteq_str("b5: output: 1 [x] testing 1 hi", buf);
153 DM_TEST(dm_test_gpio_requestf, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
155 /* Test that gpio_request() copies its string */
156 static int dm_test_gpio_copy(struct unit_test_state *uts)
158 unsigned int offset, gpio;
160 char buf[80], name[10];
162 ut_assertok(gpio_lookup_name("b6", &dev, &offset, &gpio));
163 strcpy(name, "odd_name");
164 ut_assertok(gpio_request(gpio, name));
165 sandbox_gpio_set_direction(dev, offset, 1);
166 sandbox_gpio_set_value(dev, offset, 1);
167 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
168 ut_asserteq_str("b6: output: 1 [x] odd_name", buf);
169 strcpy(name, "nothing");
170 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
171 ut_asserteq_str("b6: output: 1 [x] odd_name", buf);
175 DM_TEST(dm_test_gpio_copy, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
177 /* Test that we don't leak memory with GPIOs */
178 static int dm_test_gpio_leak(struct unit_test_state *uts)
180 ut_assertok(dm_test_gpio(uts));
181 ut_assertok(dm_test_gpio_anon(uts));
182 ut_assertok(dm_test_gpio_requestf(uts));
183 ut_assertok(dm_leak_check_end(uts));
187 DM_TEST(dm_test_gpio_leak, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
189 /* Test that we can find GPIOs using phandles */
190 static int dm_test_gpio_phandles(struct unit_test_state *uts)
192 struct gpio_desc desc, desc_list[8], desc_list2[8];
193 struct udevice *dev, *gpio_a, *gpio_b;
195 ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
196 ut_asserteq_str("a-test", dev->name);
198 ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0));
199 ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio_a));
200 ut_assertok(uclass_get_device(UCLASS_GPIO, 2, &gpio_b));
201 ut_asserteq_str("base-gpios", gpio_a->name);
202 ut_asserteq(true, !!device_active(gpio_a));
203 ut_asserteq_ptr(gpio_a, desc.dev);
204 ut_asserteq(4, desc.offset);
205 /* GPIOF_INPUT is the sandbox GPIO driver default */
206 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL));
207 ut_assertok(dm_gpio_free(dev, &desc));
209 ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 3, &desc,
211 ut_asserteq_ptr(NULL, desc.dev);
212 ut_asserteq(desc.offset, 0);
213 ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 5, &desc,
216 /* Last GPIO is ignord as it comes after <0> */
217 ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list,
218 ARRAY_SIZE(desc_list), 0));
219 ut_asserteq(-EBUSY, gpio_request_list_by_name(dev, "test-gpios",
221 ARRAY_SIZE(desc_list2),
223 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL));
224 ut_assertok(gpio_free_list(dev, desc_list, 3));
225 ut_asserteq(GPIOF_UNUSED, gpio_get_function(gpio_a, 4, NULL));
226 ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list,
227 ARRAY_SIZE(desc_list),
229 GPIOD_IS_OUT_ACTIVE));
230 ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_a, 4, NULL));
231 ut_asserteq_ptr(gpio_a, desc_list[0].dev);
232 ut_asserteq(1, desc_list[0].offset);
233 ut_asserteq_ptr(gpio_a, desc_list[1].dev);
234 ut_asserteq(4, desc_list[1].offset);
235 ut_asserteq_ptr(gpio_b, desc_list[2].dev);
236 ut_asserteq(5, desc_list[2].offset);
237 ut_asserteq(1, dm_gpio_get_value(desc_list));
238 ut_assertok(gpio_free_list(dev, desc_list, 3));
240 ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE,
241 sandbox_gpio_get_dir_flags(gpio_a, 1));
242 ut_asserteq(6, gpio_request_list_by_name(dev, "test2-gpios", desc_list,
243 ARRAY_SIZE(desc_list), 0));
245 /* This was set to output previously but flags resetted to 0 = INPUT */
246 ut_asserteq(0, sandbox_gpio_get_dir_flags(gpio_a, 1));
247 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 1, NULL));
249 /* Active low should invert the input value */
250 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 6, NULL));
251 ut_asserteq(1, dm_gpio_get_value(&desc_list[2]));
253 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 7, NULL));
254 ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 8, NULL));
255 ut_asserteq(0, dm_gpio_get_value(&desc_list[4]));
256 ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 9, NULL));
257 ut_asserteq(1, dm_gpio_get_value(&desc_list[5]));
261 DM_TEST(dm_test_gpio_phandles, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
263 /* Check the gpio pin configuration get from device tree information */
264 static int dm_test_gpio_get_dir_flags(struct unit_test_state *uts)
266 struct gpio_desc desc_list[6];
270 ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
272 ut_asserteq(6, gpio_request_list_by_name(dev, "test3-gpios", desc_list,
273 ARRAY_SIZE(desc_list), 0));
275 ut_assertok(dm_gpio_get_dir_flags(&desc_list[0], &flags));
276 ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN, flags);
278 ut_assertok(dm_gpio_get_dir_flags(&desc_list[1], &flags));
279 ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_SOURCE, flags);
281 ut_assertok(dm_gpio_get_dir_flags(&desc_list[2], &flags));
282 ut_asserteq(GPIOD_IS_OUT, flags);
284 ut_assertok(dm_gpio_get_dir_flags(&desc_list[3], &flags));
285 ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_UP, flags);
287 ut_assertok(dm_gpio_get_dir_flags(&desc_list[4], &flags));
288 ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_DOWN, flags);
290 ut_assertok(dm_gpio_get_dir_flags(&desc_list[5], &flags));
291 ut_asserteq(GPIOD_IS_IN, flags);
293 ut_assertok(gpio_free_list(dev, desc_list, 6));
297 DM_TEST(dm_test_gpio_get_dir_flags, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);