drivers/usb/dwc3/host.c

   1 /**
   2  * host.c - DesignWare USB3 DRD Controller Host Glue
   3  *
   4  * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
   5  *
   6  * Authors: Felipe Balbi <balbi@ti.com>,
   7  *
   8  * This program is free software: you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2  of
  10  * the License as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  */
  17
  18 #include <linux/platform_device.h>
  19
  20 #include "core.h"
  21
  22 int dwc3_host_init(struct dwc3 *dwc)
  23 {
  24         struct platform_device  *xhci;
  25         int                     ret;
  26
  27         xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
  28         if (!xhci) {
  29                 dev_err(dwc->dev, "couldn't allocate xHCI device\n");
  30                 ret = -ENOMEM;
  31                 goto err0;
  32         }
  33
  34         dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
  35
  36         xhci->dev.parent        = dwc->dev;
  37         xhci->dev.dma_mask      = dwc->dev->dma_mask;
  38         xhci->dev.dma_parms     = dwc->dev->dma_parms;
  39
  40         dwc->xhci = xhci;
  41
  42         ret = platform_device_add_resources(xhci, dwc->xhci_resources,
  43                                                 DWC3_XHCI_RESOURCES_NUM);
  44         if (ret) {
  45                 dev_err(dwc->dev, "couldn't add resources to xHCI device\n");
  46                 goto err1;
  47         }
  48
  49         ret = platform_device_add(xhci);
  50         if (ret) {
  51                 dev_err(dwc->dev, "failed to register xHCI device\n");
  52                 goto err1;
  53         }
  54
  55         return 0;
  56
  57 err1:
  58         platform_device_put(xhci);
  59
  60 err0:
  61         return ret;
  62 }
  63
  64 void dwc3_host_exit(struct dwc3 *dwc)
  65 {
  66         platform_device_unregister(dwc->xhci);
  67 }