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 return -ENOMEM; 33 } 34 35 dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask); 36 37 xhci->dev.parent = dwc->dev; 38 xhci->dev.dma_mask = dwc->dev->dma_mask; 39 xhci->dev.dma_parms = dwc->dev->dma_parms; 40 41 dwc->xhci = xhci; 42 43 ret = platform_device_add_resources(xhci, dwc->xhci_resources, 44 DWC3_XHCI_RESOURCES_NUM); 45 if (ret) { 46 dev_err(dwc->dev, "couldn't add resources to xHCI device\n"); 47 goto err1; 48 } 49 50 memset(&pdata, 0, sizeof(pdata)); 51 52 pdata.usb3_lpm_capable = dwc->usb3_lpm_capable; 53 54 ret = platform_device_add_data(xhci, &pdata, sizeof(pdata)); 55 if (ret) { 56 dev_err(dwc->dev, "couldn't add platform data to xHCI device\n"); 57 goto err1; 58 } 59 60 phy_create_lookup(dwc->usb2_generic_phy, "usb2-phy", 61 dev_name(&xhci->dev)); 62 phy_create_lookup(dwc->usb3_generic_phy, "usb3-phy", 63 dev_name(&xhci->dev)); 64 65 ret = platform_device_add(xhci); 66 if (ret) { 67 dev_err(dwc->dev, "failed to register xHCI device\n"); 68 goto err2; 69 } 70 71 return 0; 72 err2: 73 phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy", 74 dev_name(&xhci->dev)); 75 phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy", 76 dev_name(&xhci->dev)); 77 err1: 78 platform_device_put(xhci); 79 return ret; 80 } 81 82 void dwc3_host_exit(struct dwc3 *dwc) 83 { 84 phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy", 85 dev_name(&dwc->xhci->dev)); 86 phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy", 87 dev_name(&dwc->xhci->dev)); 88 platform_device_unregister(dwc->xhci); 89 } 90