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// SPDX-License-Identifier: GPL-2.0 OR MIT
/*
* KUnit test helpers for amdgpu_dm tests.
*
* Copyright 2026 Advanced Micro Devices, Inc.
*/
#include <kunit/test.h>
#include <linux/module.h>
#include <drm/drm_kunit_helpers.h>
#include <drm/drm_managed.h>
#include "dc.h"
#include "core_types.h"
#include "clk_mgr.h"
#include "amdgpu.h"
#include "amdgpu_mode.h"
#include "amdgpu_dm.h"
#include "amdgpu_dm_kunit_test_helpers.h"
struct amdgpu_device *dm_kunit_alloc_adev(struct kunit *test)
{
struct drm_device *drm;
struct device *dev;
dev = drm_kunit_helper_alloc_device(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
drm = __drm_kunit_helper_alloc_drm_device(test, dev,
sizeof(struct amdgpu_device),
offsetof(struct amdgpu_device, ddev),
DRIVER_MODESET | DRIVER_ATOMIC);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, drm);
return drm_to_adev(drm);
}
EXPORT_SYMBOL(dm_kunit_alloc_adev);
struct dc_link *dm_kunit_alloc_link(struct kunit *test)
{
struct dc_link *link;
link = kunit_kzalloc(test, sizeof(*link), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, link);
return link;
}
EXPORT_SYMBOL(dm_kunit_alloc_link);
struct dc *dm_kunit_alloc_dc_with_ctx(struct kunit *test)
{
struct dc_context *ctx;
struct dc *dc;
dc = kunit_kzalloc(test, sizeof(*dc), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, dc);
ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, ctx);
dc->ctx = ctx;
ctx->dc = dc;
return dc;
}
EXPORT_SYMBOL(dm_kunit_alloc_dc_with_ctx);
struct dc_link *dm_kunit_alloc_link_with_ctx(struct kunit *test)
{
struct dc_link *link;
struct dc *dc;
link = dm_kunit_alloc_link(test);
dc = dm_kunit_alloc_dc_with_ctx(test);
link->ctx = dc->ctx;
return link;
}
EXPORT_SYMBOL(dm_kunit_alloc_link_with_ctx);
struct amdgpu_display_manager *dm_kunit_alloc_dm(struct kunit *test)
{
struct amdgpu_display_manager *dm;
struct dc *dc;
struct dc_state *state;
dm = kunit_kzalloc(test, sizeof(*dm), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, dm);
dc = kunit_kzalloc(test, sizeof(*dc), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, dc);
state = kunit_kzalloc(test, sizeof(*state), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, state);
dm->dc = dc;
dc->current_state = state;
return dm;
}
EXPORT_SYMBOL(dm_kunit_alloc_dm);
struct dc_stream_state *dm_kunit_alloc_stream(struct kunit *test,
struct dc_link *link)
{
struct dc_stream_state *stream;
stream = kunit_kzalloc(test, sizeof(*stream), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, stream);
stream->link = link;
kref_init(&stream->refcount);
return stream;
}
EXPORT_SYMBOL(dm_kunit_alloc_stream);
struct dc_state *dm_kunit_alloc_dc_state(struct kunit *test)
{
struct dc_state *state;
state = kunit_kzalloc(test, sizeof(*state), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, state);
return state;
}
EXPORT_SYMBOL(dm_kunit_alloc_dc_state);
struct clk_mgr *dm_kunit_alloc_clk_mgr(struct kunit *test)
{
struct clk_mgr *clk_mgr;
struct clk_mgr_funcs *funcs;
clk_mgr = kunit_kzalloc(test, sizeof(*clk_mgr), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, clk_mgr);
funcs = kunit_kzalloc(test, sizeof(*funcs), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, funcs);
clk_mgr->funcs = funcs;
return clk_mgr;
}
EXPORT_SYMBOL(dm_kunit_alloc_clk_mgr);
void dm_kunit_add_stream_to_state(struct kunit *test, struct dc_state *state,
unsigned int index, struct dc_link *link)
{
struct dc_stream_state *stream;
KUNIT_ASSERT_LT(test, index, (unsigned int)MAX_PIPES);
stream = kunit_kzalloc(test, sizeof(*stream), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, stream);
stream->link = link;
state->streams[index] = stream;
if (state->stream_count <= index)
state->stream_count = index + 1;
}
EXPORT_SYMBOL(dm_kunit_add_stream_to_state);
struct amdgpu_dm_connector *dm_kunit_alloc_connector(struct kunit *test,
struct amdgpu_device *adev,
struct dc_link *link)
{
struct amdgpu_dm_connector *aconnector;
aconnector = drmm_kzalloc(adev_to_drm(adev), sizeof(*aconnector), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, aconnector);
if (adev)
aconnector->base.dev = &adev->ddev;
aconnector->dc_link = link;
return aconnector;
}
EXPORT_SYMBOL(dm_kunit_alloc_connector);
struct drm_device *dm_kunit_alloc_drm_with_connector_list(struct kunit *test)
{
struct drm_device *dev;
dev = kunit_kzalloc(test, sizeof(*dev), GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
INIT_LIST_HEAD(&dev->mode_config.connector_list);
spin_lock_init(&dev->mode_config.connector_list_lock);
return dev;
}
EXPORT_SYMBOL(dm_kunit_alloc_drm_with_connector_list);
MODULE_LICENSE("Dual MIT/GPL");
MODULE_DESCRIPTION("KUnit test helpers for amdgpu_dm tests");
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