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// SPDX-License-Identifier: GPL-2.0
/*
* Cadence USBSS DRD Driver - host side
*
* Copyright (C) 2018-2019 Cadence Design Systems.
* Copyright (C) 2017-2018 NXP
*
* Authors: Peter Chen <peter.chen@nxp.com>
* Pawel Laszczak <pawell@cadence.com>
*/
#include <linux/platform_device.h>
#include "core.h"
#include "drd.h"
static int __cdns3_host_init(struct cdns3 *cdns)
{
struct platform_device *xhci;
int ret;
cdns3_drd_switch_host(cdns, 1);
xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
if (!xhci) {
dev_err(cdns->dev, "couldn't allocate xHCI device\n");
return -ENOMEM;
}
xhci->dev.parent = cdns->dev;
cdns->host_dev = xhci;
ret = platform_device_add_resources(xhci, cdns->xhci_res,
CDNS3_XHCI_RESOURCES_NUM);
if (ret) {
dev_err(cdns->dev, "couldn't add resources to xHCI device\n");
goto err1;
}
ret = platform_device_add(xhci);
if (ret) {
dev_err(cdns->dev, "failed to register xHCI device\n");
goto err1;
}
return 0;
err1:
platform_device_put(xhci);
return ret;
}
static void cdns3_host_exit(struct cdns3 *cdns)
{
platform_device_unregister(cdns->host_dev);
cdns->host_dev = NULL;
cdns3_drd_switch_host(cdns, 0);
}
int cdns3_host_init(struct cdns3 *cdns)
{
struct cdns3_role_driver *rdrv;
rdrv = devm_kzalloc(cdns->dev, sizeof(*rdrv), GFP_KERNEL);
if (!rdrv)
return -ENOMEM;
rdrv->start = __cdns3_host_init;
rdrv->stop = cdns3_host_exit;
rdrv->state = CDNS3_ROLE_STATE_INACTIVE;
rdrv->name = "host";
cdns->roles[USB_ROLE_HOST] = rdrv;
return 0;
}
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