blob: 420d0303fe67864c71c6a473317567996c0b48d5 [file] [log] [blame]
/**
* host.c - DesignWare USB3 DRD Controller Host Glue
*
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The names of the above-listed copyright holders may not be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2, as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/platform_device.h>
#include "core.h"
#include "xhci.h"
int dwc3_host_init(struct dwc3 *dwc)
{
struct platform_device *xhci;
int ret;
struct xhci_plat_data pdata;
xhci = platform_device_alloc("xhci-hcd", -1);
if (!xhci) {
dev_err(dwc->dev, "couldn't allocate xHCI device\n");
ret = -ENOMEM;
goto err0;
}
dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
xhci->dev.dma_mask = dwc->dev->dma_mask;
xhci->dev.dma_parms = dwc->dev->dma_parms;
dwc->xhci = xhci;
pdata.vendor = ((dwc->revision & DWC3_GSNPSID_MASK) >>
__ffs(DWC3_GSNPSID_MASK) & DWC3_GSNPSREV_MASK);
pdata.revision = dwc->revision & DWC3_GSNPSREV_MASK;
ret = platform_device_add_data(xhci, (const void *) &pdata,
sizeof(struct xhci_plat_data));
if (ret) {
dev_err(dwc->dev, "couldn't add pdata to xHCI device\n");
goto err1;
}
ret = platform_device_add_resources(xhci, dwc->xhci_resources,
DWC3_XHCI_RESOURCES_NUM);
if (ret) {
dev_err(dwc->dev, "couldn't add resources to xHCI device\n");
goto err1;
}
/* Add XHCI device if !OTG, otherwise OTG takes care of this */
if (!dwc->dotg) {
xhci->dev.parent = dwc->dev;
ret = platform_device_add(xhci);
if (ret) {
dev_err(dwc->dev, "failed to register xHCI device\n");
goto err1;
}
}
return 0;
err1:
platform_device_put(xhci);
err0:
return ret;
}
void dwc3_host_exit(struct dwc3 *dwc)
{
if (!dwc->dotg)
platform_device_unregister(dwc->xhci);
}