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 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
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 input */
77 ut_assertok(ops->direction_input(dev, offset));
78 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
79 ut_asserteq_str("b4: input: 1 [x] testing", buf);
80 sandbox_gpio_set_value(dev, offset, 0);
81 ut_asserteq(0, sandbox_gpio_get_value(dev, offset));
82 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
83 ut_asserteq_str("b4: input: 0 [x] testing", buf);
85 ut_assertok(gpio_free(gpio));
86 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
87 ut_asserteq_str("b4: input: 0 [ ]", buf);
89 /* Check the 'a' bank also */
90 ut_assertok(gpio_lookup_name("a15", &dev, &offset, &gpio));
91 ut_asserteq_str(dev->name, "base-gpios");
92 ut_asserteq(15, offset);
93 ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 15, gpio);
95 name = gpio_get_bank_info(dev, &offset_count);
96 ut_asserteq_str("a", name);
97 ut_asserteq(20, offset_count);
101 DM_TEST(dm_test_gpio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
103 /* Test that sandbox anonymous GPIOs work correctly */
104 static int dm_test_gpio_anon(struct unit_test_state *uts)
106 unsigned int offset, gpio;
111 /* And the anonymous bank */
112 ut_assertok(gpio_lookup_name("14", &dev, &offset, &gpio));
113 ut_asserteq_str(dev->name, "gpio_sandbox");
114 ut_asserteq(14, offset);
115 ut_asserteq(14, gpio);
117 name = gpio_get_bank_info(dev, &offset_count);
118 ut_asserteq_ptr(NULL, name);
119 ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT, offset_count);
123 DM_TEST(dm_test_gpio_anon, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
125 /* Test that gpio_requestf() works as expected */
126 static int dm_test_gpio_requestf(struct unit_test_state *uts)
128 unsigned int offset, gpio;
132 ut_assertok(gpio_lookup_name("b5", &dev, &offset, &gpio));
133 ut_assertok(gpio_requestf(gpio, "testing %d %s", 1, "hi"));
134 sandbox_gpio_set_direction(dev, offset, 1);
135 sandbox_gpio_set_value(dev, offset, 1);
136 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
137 ut_asserteq_str("b5: output: 1 [x] testing 1 hi", buf);
141 DM_TEST(dm_test_gpio_requestf, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
143 /* Test that gpio_request() copies its string */
144 static int dm_test_gpio_copy(struct unit_test_state *uts)
146 unsigned int offset, gpio;
148 char buf[80], name[10];
150 ut_assertok(gpio_lookup_name("b6", &dev, &offset, &gpio));
151 strcpy(name, "odd_name");
152 ut_assertok(gpio_request(gpio, name));
153 sandbox_gpio_set_direction(dev, offset, 1);
154 sandbox_gpio_set_value(dev, offset, 1);
155 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
156 ut_asserteq_str("b6: output: 1 [x] odd_name", buf);
157 strcpy(name, "nothing");
158 ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
159 ut_asserteq_str("b6: output: 1 [x] odd_name", buf);
163 DM_TEST(dm_test_gpio_copy, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
165 /* Test that we don't leak memory with GPIOs */
166 static int dm_test_gpio_leak(struct unit_test_state *uts)
168 ut_assertok(dm_test_gpio(uts));
169 ut_assertok(dm_test_gpio_anon(uts));
170 ut_assertok(dm_test_gpio_requestf(uts));
171 ut_assertok(dm_leak_check_end(uts));
175 DM_TEST(dm_test_gpio_leak, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
177 /* Test that we can find GPIOs using phandles */
178 static int dm_test_gpio_phandles(struct unit_test_state *uts)
180 struct gpio_desc desc, desc_list[8], desc_list2[8];
181 struct udevice *dev, *gpio_a, *gpio_b;
183 ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
184 ut_asserteq_str("a-test", dev->name);
186 ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0));
187 ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio_a));
188 ut_assertok(uclass_get_device(UCLASS_GPIO, 2, &gpio_b));
189 ut_asserteq_str("base-gpios", gpio_a->name);
190 ut_asserteq(true, !!device_active(gpio_a));
191 ut_asserteq_ptr(gpio_a, desc.dev);
192 ut_asserteq(4, desc.offset);
193 /* GPIOF_INPUT is the sandbox GPIO driver default */
194 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL));
195 ut_assertok(dm_gpio_free(dev, &desc));
197 ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 3, &desc,
199 ut_asserteq_ptr(NULL, desc.dev);
200 ut_asserteq(desc.offset, 0);
201 ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 5, &desc,
204 /* Last GPIO is ignord as it comes after <0> */
205 ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list,
206 ARRAY_SIZE(desc_list), 0));
207 ut_asserteq(-EBUSY, gpio_request_list_by_name(dev, "test-gpios",
209 ARRAY_SIZE(desc_list2),
211 ut_assertok(gpio_free_list(dev, desc_list, 3));
212 ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list,
213 ARRAY_SIZE(desc_list),
215 GPIOD_IS_OUT_ACTIVE));
216 ut_asserteq_ptr(gpio_a, desc_list[0].dev);
217 ut_asserteq(1, desc_list[0].offset);
218 ut_asserteq_ptr(gpio_a, desc_list[1].dev);
219 ut_asserteq(4, desc_list[1].offset);
220 ut_asserteq_ptr(gpio_b, desc_list[2].dev);
221 ut_asserteq(5, desc_list[2].offset);
222 ut_asserteq(1, dm_gpio_get_value(desc_list));
223 ut_assertok(gpio_free_list(dev, desc_list, 3));
225 ut_asserteq(6, gpio_request_list_by_name(dev, "test2-gpios", desc_list,
226 ARRAY_SIZE(desc_list), 0));
227 /* This was set to output previously, so still will be */
228 ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_a, 1, NULL));
230 /* Active low should invert the input value */
231 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 6, NULL));
232 ut_asserteq(1, dm_gpio_get_value(&desc_list[2]));
234 ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 7, NULL));
235 ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 8, NULL));
236 ut_asserteq(0, dm_gpio_get_value(&desc_list[4]));
237 ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 9, NULL));
238 ut_asserteq(1, dm_gpio_get_value(&desc_list[5]));
243 DM_TEST(dm_test_gpio_phandles, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);