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 } 68