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kernel/linux-imx6_3.14.28/drivers/usb/dwc3/host.c 1.57 KB
6b13f685e   김민수   BSP 최초 추가
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  /**
   * host.c - DesignWare USB3 DRD Controller Host Glue
   *
   * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
   *
   * Authors: Felipe Balbi <balbi@ti.com>,
   *
   * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2  of
   * the License as published by the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   */
  
  #include <linux/platform_device.h>
  
  #include "core.h"
  
  int dwc3_host_init(struct dwc3 *dwc)
  {
  	struct platform_device	*xhci;
  	int			ret;
  
  	xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
  	if (!xhci) {
  		dev_err(dwc->dev, "couldn't allocate xHCI device
  ");
  		ret = -ENOMEM;
  		goto err0;
  	}
  
  	dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
  
  	xhci->dev.parent	= dwc->dev;
  	xhci->dev.dma_mask	= dwc->dev->dma_mask;
  	xhci->dev.dma_parms	= dwc->dev->dma_parms;
  
  	dwc->xhci = xhci;
  
  	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
  ");
  		goto err1;
  	}
  
  	ret = platform_device_add(xhci);
  	if (ret) {
  		dev_err(dwc->dev, "failed to register xHCI device
  ");
  		goto err1;
  	}
  
  	return 0;
  
  err1:
  	platform_device_put(xhci);
  
  err0:
  	return ret;
  }
  
  void dwc3_host_exit(struct dwc3 *dwc)
  {
  	platform_device_unregister(dwc->xhci);
  }