2024-07-18 14:05:01 -07:00
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Test managed DeviceTree APIs
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*/
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#include <linux/of.h>
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#include <linux/of_fdt.h>
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#include <kunit/of.h>
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#include <kunit/test.h>
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#include <kunit/resource.h>
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2024-10-09 13:41:31 -07:00
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#include "of_private.h"
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/**
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* of_root_kunit_skip() - Skip test if the root node isn't populated
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* @test: test to skip if the root node isn't populated
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*/
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void of_root_kunit_skip(struct kunit *test)
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{
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if (IS_ENABLED(CONFIG_ARM64) && IS_ENABLED(CONFIG_ACPI) && !of_root)
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kunit_skip(test, "arm64+acpi doesn't populate a root node");
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}
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EXPORT_SYMBOL_GPL(of_root_kunit_skip);
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2024-07-18 14:05:01 -07:00
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#if defined(CONFIG_OF_OVERLAY) && defined(CONFIG_OF_EARLY_FLATTREE)
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static void of_overlay_fdt_apply_kunit_exit(void *ovcs_id)
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{
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of_overlay_remove(ovcs_id);
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}
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/**
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* of_overlay_fdt_apply_kunit() - Test managed of_overlay_fdt_apply()
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* @test: test context
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* @overlay_fdt: device tree overlay to apply
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* @overlay_fdt_size: size in bytes of @overlay_fdt
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* @ovcs_id: identifier of overlay, used to remove the overlay
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*
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* Just like of_overlay_fdt_apply(), except the overlay is managed by the test
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* case and is automatically removed with of_overlay_remove() after the test
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* case concludes.
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*
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* Return: 0 on success, negative errno on failure
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*/
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int of_overlay_fdt_apply_kunit(struct kunit *test, void *overlay_fdt,
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u32 overlay_fdt_size, int *ovcs_id)
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{
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int ret;
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int *copy_id;
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2024-10-09 13:41:31 -07:00
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of_root_kunit_skip(test);
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2024-07-18 14:05:01 -07:00
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copy_id = kunit_kmalloc(test, sizeof(*copy_id), GFP_KERNEL);
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if (!copy_id)
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return -ENOMEM;
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ret = of_overlay_fdt_apply(overlay_fdt, overlay_fdt_size,
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ovcs_id, NULL);
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if (ret)
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return ret;
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*copy_id = *ovcs_id;
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return kunit_add_action_or_reset(test, of_overlay_fdt_apply_kunit_exit,
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copy_id);
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}
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EXPORT_SYMBOL_GPL(of_overlay_fdt_apply_kunit);
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#endif
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KUNIT_DEFINE_ACTION_WRAPPER(of_node_put_wrapper, of_node_put, struct device_node *);
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/**
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* of_node_put_kunit() - Test managed of_node_put()
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* @test: test context
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* @node: node to pass to `of_node_put()`
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*
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* Just like of_node_put(), except the node is managed by the test case and is
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* automatically put with of_node_put() after the test case concludes.
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*/
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void of_node_put_kunit(struct kunit *test, struct device_node *node)
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{
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if (kunit_add_action(test, of_node_put_wrapper, node)) {
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KUNIT_FAIL(test,
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"Can't allocate a kunit resource to put of_node\n");
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}
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}
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EXPORT_SYMBOL_GPL(of_node_put_kunit);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Test managed DeviceTree APIs");
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