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 #include <linux/usb/xhci_pdriver.h> 20 21 #include "core.h" 22 23 int dwc3_host_init(struct dwc3 *dwc) 24 { 25 struct platform_device *xhci; 26 struct usb_xhci_pdata pdata; 27 int ret; 28 29 xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO); 30 if (!xhci) { 31 dev_err(dwc->dev, "couldn't allocate xHCI device\n"); 32 ret = -ENOMEM; 33 goto err0; 34 } 35 36 dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask); 37 38 xhci->dev.parent = dwc->dev; 39 xhci->dev.dma_mask = dwc->dev->dma_mask; 40 xhci->dev.dma_parms = dwc->dev->dma_parms; 41 42 dwc->xhci = xhci; 43 44 ret = platform_device_add_resources(xhci, dwc->xhci_resources, 45 DWC3_XHCI_RESOURCES_NUM); 46 if (ret) { 47 dev_err(dwc->dev, "couldn't add resources to xHCI device\n"); 48 goto err1; 49 } 50 51 memset(&pdata, 0, sizeof(pdata)); 52 53 #ifdef CONFIG_DWC3_HOST_USB3_LPM_ENABLE 54 pdata.usb3_lpm_capable = 1; 55 #endif 56 57 ret = platform_device_add_data(xhci, &pdata, sizeof(pdata)); 58 if (ret) { 59 dev_err(dwc->dev, "couldn't add platform data to xHCI device\n"); 60 goto err1; 61 } 62 63 ret = platform_device_add(xhci); 64 if (ret) { 65 dev_err(dwc->dev, "failed to register xHCI device\n"); 66 goto err1; 67 } 68 69 return 0; 70 71 err1: 72 platform_device_put(xhci); 73 74 err0: 75 return ret; 76 } 77 78 void dwc3_host_exit(struct dwc3 *dwc) 79 { 80 platform_device_unregister(dwc->xhci); 81 } 82