root/drivers/gpu/drm/xe/display/xe_frontbuffer.c
// SPDX-License-Identifier: MIT
/* Copyright © 2026 Intel Corporation */

#include <drm/drm_gem.h>
#include <drm/intel/display_parent_interface.h>

#include "intel_frontbuffer.h"
#include "xe_frontbuffer.h"

struct xe_frontbuffer {
        struct intel_frontbuffer base;
        struct drm_gem_object *obj;
        struct kref ref;
};

static struct intel_frontbuffer *xe_frontbuffer_get(struct drm_gem_object *obj)
{
        struct xe_frontbuffer *front;

        front = kmalloc_obj(*front);
        if (!front)
                return NULL;

        intel_frontbuffer_init(&front->base, obj->dev);

        kref_init(&front->ref);

        drm_gem_object_get(obj);
        front->obj = obj;

        return &front->base;
}

static void xe_frontbuffer_ref(struct intel_frontbuffer *_front)
{
        struct xe_frontbuffer *front =
                container_of(_front, typeof(*front), base);

        kref_get(&front->ref);
}

static void frontbuffer_release(struct kref *ref)
{
        struct xe_frontbuffer *front =
                container_of(ref, typeof(*front), ref);

        intel_frontbuffer_fini(&front->base);

        drm_gem_object_put(front->obj);

        kfree(front);
}

static void xe_frontbuffer_put(struct intel_frontbuffer *_front)
{
        struct xe_frontbuffer *front =
                container_of(_front, typeof(*front), base);

        kref_put(&front->ref, frontbuffer_release);
}

static void xe_frontbuffer_flush_for_display(struct intel_frontbuffer *front)
{
}

const struct intel_display_frontbuffer_interface xe_display_frontbuffer_interface = {
        .get = xe_frontbuffer_get,
        .ref = xe_frontbuffer_ref,
        .put = xe_frontbuffer_put,
        .flush_for_display = xe_frontbuffer_flush_for_display,
};