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https://github.com/torvalds/linux
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b2aeb6da3d
Patch split function cdns3_drd_switch_gadget and cdns3_drd_switch_host into: - cdns3_drd_host_on - cdns3_drd_host_off - cdns3_drd_gadget_on - cdns3_drd_gadgett_off These functions don't have any shared code so it's better to have smaller, faster and easier functions. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Reviewed-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>
76 lines
1.5 KiB
C
76 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Cadence USBSS DRD Driver - host side
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*
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* Copyright (C) 2018-2019 Cadence Design Systems.
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* Copyright (C) 2017-2018 NXP
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*
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* Authors: Peter Chen <peter.chen@nxp.com>
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* Pawel Laszczak <pawell@cadence.com>
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*/
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#include <linux/platform_device.h>
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#include "core.h"
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#include "drd.h"
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#include "host-export.h"
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static int __cdns3_host_init(struct cdns3 *cdns)
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{
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struct platform_device *xhci;
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int ret;
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cdns3_drd_host_on(cdns);
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xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
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if (!xhci) {
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dev_err(cdns->dev, "couldn't allocate xHCI device\n");
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return -ENOMEM;
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}
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xhci->dev.parent = cdns->dev;
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cdns->host_dev = xhci;
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ret = platform_device_add_resources(xhci, cdns->xhci_res,
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CDNS3_XHCI_RESOURCES_NUM);
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if (ret) {
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dev_err(cdns->dev, "couldn't add resources to xHCI device\n");
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goto err1;
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}
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ret = platform_device_add(xhci);
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if (ret) {
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dev_err(cdns->dev, "failed to register xHCI device\n");
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goto err1;
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}
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return 0;
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err1:
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platform_device_put(xhci);
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return ret;
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}
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static void cdns3_host_exit(struct cdns3 *cdns)
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{
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platform_device_unregister(cdns->host_dev);
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cdns->host_dev = NULL;
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cdns3_drd_host_off(cdns);
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}
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int cdns3_host_init(struct cdns3 *cdns)
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{
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struct cdns3_role_driver *rdrv;
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rdrv = devm_kzalloc(cdns->dev, sizeof(*rdrv), GFP_KERNEL);
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if (!rdrv)
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return -ENOMEM;
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rdrv->start = __cdns3_host_init;
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rdrv->stop = cdns3_host_exit;
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rdrv->state = CDNS3_ROLE_STATE_INACTIVE;
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rdrv->name = "host";
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cdns->roles[USB_ROLE_HOST] = rdrv;
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return 0;
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}
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