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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
96495d90 SG |
2 | /* |
3 | * Copyright (C) 2013 Google, Inc | |
96495d90 SG |
4 | */ |
5 | ||
6 | #include <common.h> | |
7 | #include <fdtdec.h> | |
8 | #include <dm.h> | |
4324174d | 9 | #include <dm/root.h> |
96495d90 SG |
10 | #include <dm/test.h> |
11 | #include <dm/util.h> | |
12 | #include <asm/gpio.h> | |
e721b882 | 13 | #include <test/ut.h> |
96495d90 SG |
14 | |
15 | /* Test that sandbox GPIOs work correctly */ | |
e721b882 | 16 | static int dm_test_gpio(struct unit_test_state *uts) |
96495d90 SG |
17 | { |
18 | unsigned int offset, gpio; | |
19 | struct dm_gpio_ops *ops; | |
54c5d08a | 20 | struct udevice *dev; |
96495d90 SG |
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); | |
4b8f11c2 | 42 | ut_assert(ops->get_function); |
96495d90 SG |
43 | |
44 | /* Cannot get a value until it is reserved */ | |
4b8f11c2 | 45 | ut_asserteq(-EBUSY, gpio_get_value(gpio + 1)); |
96495d90 SG |
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 | */ | |
4b8f11c2 SG |
50 | ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); |
51 | ut_asserteq_str("b4: input: 0 [ ]", buf); | |
96495d90 SG |
52 | |
53 | /* Change it to an output */ | |
54 | sandbox_gpio_set_direction(dev, offset, 1); | |
4b8f11c2 SG |
55 | ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); |
56 | ut_asserteq_str("b4: output: 0 [ ]", buf); | |
96495d90 SG |
57 | |
58 | sandbox_gpio_set_value(dev, offset, 1); | |
4b8f11c2 SG |
59 | ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); |
60 | ut_asserteq_str("b4: output: 1 [ ]", buf); | |
96495d90 | 61 | |
4b8f11c2 SG |
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); | |
96495d90 SG |
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)); | |
4b8f11c2 SG |
70 | ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); |
71 | ut_asserteq_str("b4: output: 0 [x] testing", buf); | |
96495d90 SG |
72 | ut_assertok(ops->set_value(dev, offset, 1)); |
73 | ut_asserteq(1, ops->get_value(dev, offset)); | |
74 | ||
743268f5 | 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 | ||
96495d90 SG |
82 | /* Make it an input */ |
83 | ut_assertok(ops->direction_input(dev, offset)); | |
4b8f11c2 SG |
84 | ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); |
85 | ut_asserteq_str("b4: input: 1 [x] testing", buf); | |
96495d90 SG |
86 | sandbox_gpio_set_value(dev, offset, 0); |
87 | ut_asserteq(0, sandbox_gpio_get_value(dev, offset)); | |
4b8f11c2 SG |
88 | ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf))); |
89 | ut_asserteq_str("b4: input: 0 [x] testing", buf); | |
96495d90 | 90 | |
4b8f11c2 SG |
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); | |
96495d90 SG |
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 | ||
4b8f11c2 SG |
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 */ | |
e721b882 | 110 | static int dm_test_gpio_anon(struct unit_test_state *uts) |
4b8f11c2 SG |
111 | { |
112 | unsigned int offset, gpio; | |
113 | struct udevice *dev; | |
114 | const char *name; | |
115 | int offset_count; | |
116 | ||
96495d90 SG |
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 | } | |
4b8f11c2 | 129 | DM_TEST(dm_test_gpio_anon, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); |
d44f597b SG |
130 | |
131 | /* Test that gpio_requestf() works as expected */ | |
e721b882 | 132 | static int dm_test_gpio_requestf(struct unit_test_state *uts) |
d44f597b SG |
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); | |
4324174d SG |
148 | |
149 | /* Test that gpio_request() copies its string */ | |
e721b882 | 150 | static int dm_test_gpio_copy(struct unit_test_state *uts) |
4324174d SG |
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 */ | |
e721b882 | 172 | static int dm_test_gpio_leak(struct unit_test_state *uts) |
4324174d | 173 | { |
e721b882 JH |
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)); | |
4324174d SG |
178 | |
179 | return 0; | |
180 | } | |
4324174d | 181 | DM_TEST(dm_test_gpio_leak, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); |
3669e0e7 SG |
182 | |
183 | /* Test that we can find GPIOs using phandles */ | |
e721b882 | 184 | static int dm_test_gpio_phandles(struct unit_test_state *uts) |
3669e0e7 SG |
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); |