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// SPDX-License-Identifier: MIT
/*
* Copyright © 2023 Intel Corporation
*/
#include <drm/drm_modeset_lock.h>
#include "intel_display_types.h"
#include "intel_modeset_lock.h"
void _intel_modeset_lock_begin(struct drm_modeset_acquire_ctx *ctx,
struct intel_atomic_state *state,
unsigned int flags, int *ret)
{
drm_modeset_acquire_init(ctx, flags);
if (state)
state->base.acquire_ctx = ctx;
*ret = -EDEADLK;
}
bool _intel_modeset_lock_loop(int *ret)
{
if (*ret == -EDEADLK) {
*ret = 0;
return true;
}
return false;
}
void _intel_modeset_lock_end(struct drm_modeset_acquire_ctx *ctx,
struct intel_atomic_state *state,
int *ret)
{
if (*ret == -EDEADLK) {
if (state)
drm_atomic_state_clear(&state->base);
*ret = drm_modeset_backoff(ctx);
if (*ret == 0) {
*ret = -EDEADLK;
return;
}
}
drm_modeset_drop_locks(ctx);
drm_modeset_acquire_fini(ctx);
}
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