104 lines
3.3 KiB
C
104 lines
3.3 KiB
C
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/**
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* host.c - DesignWare USB3 DRD Controller Host Glue
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
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*
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* Authors: Felipe Balbi <balbi@ti.com>,
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The names of the above-listed copyright holders may not be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* ALTERNATIVELY, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2, as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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 "xhci.h"
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int dwc3_host_init(struct dwc3 *dwc)
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{
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struct platform_device *xhci;
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int ret;
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struct xhci_plat_data pdata;
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xhci = platform_device_alloc("xhci-hcd", -1);
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if (!xhci) {
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dev_err(dwc->dev, "couldn't allocate xHCI device\n");
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ret = -ENOMEM;
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goto err0;
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}
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dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
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xhci->dev.dma_mask = dwc->dev->dma_mask;
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xhci->dev.dma_parms = dwc->dev->dma_parms;
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dwc->xhci = xhci;
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pdata.vendor = ((dwc->revision & DWC3_GSNPSID_MASK) >>
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__ffs(DWC3_GSNPSID_MASK) & DWC3_GSNPSREV_MASK);
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pdata.revision = dwc->revision & DWC3_GSNPSREV_MASK;
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ret = platform_device_add_data(xhci, (const void *) &pdata,
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sizeof(struct xhci_plat_data));
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if (ret) {
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dev_err(dwc->dev, "couldn't add pdata to xHCI device\n");
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goto err1;
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}
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ret = platform_device_add_resources(xhci, dwc->xhci_resources,
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DWC3_XHCI_RESOURCES_NUM);
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if (ret) {
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dev_err(dwc->dev, "couldn't add resources to xHCI device\n");
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goto err1;
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}
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/* Add XHCI device if !OTG, otherwise OTG takes care of this */
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if (!dwc->dotg) {
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xhci->dev.parent = dwc->dev;
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ret = platform_device_add(xhci);
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if (ret) {
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dev_err(dwc->dev, "failed to register xHCI device\n");
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goto err1;
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}
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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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err0:
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return ret;
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}
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void dwc3_host_exit(struct dwc3 *dwc)
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{
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if (!dwc->dotg)
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platform_device_unregister(dwc->xhci);
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}
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