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// SPDX-License-Identifier: GPL-2.0-only
/* Copyright(c) 2021 Intel Corporation. All rights reserved. */
#include <linux/platform_device.h>
#include <linux/device.h>
#include <linux/acpi.h>
#include <cxl.h>
#include "test/mock.h"
struct acpi_device *to_cxl_host_bridge(struct device *host, struct device *dev)
{
int index;
struct acpi_device *adev, *found = NULL;
struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
if (ops && ops->is_mock_bridge(dev)) {
found = ACPI_COMPANION(dev);
goto out;
}
if (dev->bus == &platform_bus_type)
goto out;
adev = to_acpi_device(dev);
if (!acpi_pci_find_root(adev->handle))
goto out;
if (strcmp(acpi_device_hid(adev), "ACPI0016") == 0) {
found = adev;
dev_dbg(host, "found host bridge %s\n", dev_name(&adev->dev));
}
out:
put_cxl_mock_ops(index);
return found;
}
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