| 1 | // SPDX-License-Identifier: GPL-2.0 |
|---|---|
| 2 | /* |
| 3 | * KUnit tests for OF APIs |
| 4 | */ |
| 5 | #include <linux/module.h> |
| 6 | #include <linux/of.h> |
| 7 | |
| 8 | #include <kunit/test.h> |
| 9 | |
| 10 | /* |
| 11 | * Test that the root node "/" can be found by path. |
| 12 | */ |
| 13 | static void of_dtb_root_node_found_by_path(struct kunit *test) |
| 14 | { |
| 15 | struct device_node *np; |
| 16 | |
| 17 | np = of_find_node_by_path(path: "/"); |
| 18 | KUNIT_EXPECT_NOT_ERR_OR_NULL(test, np); |
| 19 | of_node_put(node: np); |
| 20 | } |
| 21 | |
| 22 | /* |
| 23 | * Test that the 'of_root' global variable is always populated when DT code is |
| 24 | * enabled. Remove this test once of_root is removed from global access. |
| 25 | */ |
| 26 | static void of_dtb_root_node_populates_of_root(struct kunit *test) |
| 27 | { |
| 28 | KUNIT_EXPECT_NOT_ERR_OR_NULL(test, of_root); |
| 29 | } |
| 30 | |
| 31 | static struct kunit_case of_dtb_test_cases[] = { |
| 32 | KUNIT_CASE(of_dtb_root_node_found_by_path), |
| 33 | KUNIT_CASE(of_dtb_root_node_populates_of_root), |
| 34 | {} |
| 35 | }; |
| 36 | |
| 37 | static int of_dtb_test_init(struct kunit *test) |
| 38 | { |
| 39 | if (!IS_ENABLED(CONFIG_OF_EARLY_FLATTREE)) |
| 40 | kunit_skip(test, "requires CONFIG_OF_EARLY_FLATTREE"); |
| 41 | |
| 42 | return 0; |
| 43 | } |
| 44 | |
| 45 | /* |
| 46 | * Test suite to confirm a DTB is loaded. |
| 47 | */ |
| 48 | static struct kunit_suite of_dtb_suite = { |
| 49 | .name = "of_dtb", |
| 50 | .test_cases = of_dtb_test_cases, |
| 51 | .init = of_dtb_test_init, |
| 52 | }; |
| 53 | |
| 54 | kunit_test_suites( |
| 55 | &of_dtb_suite, |
| 56 | ); |
| 57 | MODULE_LICENSE("GPL"); |
| 58 |