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 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions, and the following disclaimer, 13 * without modification. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The names of the above-listed copyright holders may not be used 18 * to endorse or promote products derived from this software without 19 * specific prior written permission. 20 * 21 * ALTERNATIVELY, this software may be distributed under the terms of the 22 * GNU General Public License ("GPL") version 2, as published by the Free 23 * Software Foundation. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 26 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 27 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 29 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 30 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 31 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 32 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <linux/platform_device.h> 39 40 #include "core.h" 41 42 int dwc3_host_init(struct dwc3 *dwc) 43 { 44 struct platform_device *xhci; 45 int ret; 46 47 xhci = platform_device_alloc("xhci-hcd", -1); 48 if (!xhci) { 49 dev_err(dwc->dev, "couldn't allocate xHCI device\n"); 50 ret = -ENOMEM; 51 goto err0; 52 } 53 54 dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask); 55 56 xhci->dev.parent = dwc->dev; 57 xhci->dev.dma_mask = dwc->dev->dma_mask; 58 xhci->dev.dma_parms = dwc->dev->dma_parms; 59 60 dwc->xhci = xhci; 61 62 ret = platform_device_add_resources(xhci, dwc->xhci_resources, 63 DWC3_XHCI_RESOURCES_NUM); 64 if (ret) { 65 dev_err(dwc->dev, "couldn't add resources to xHCI device\n"); 66 goto err1; 67 } 68 69 ret = platform_device_add(xhci); 70 if (ret) { 71 dev_err(dwc->dev, "failed to register xHCI device\n"); 72 goto err1; 73 } 74 75 return 0; 76 77 err1: 78 platform_device_put(xhci); 79 80 err0: 81 return ret; 82 } 83 84 void dwc3_host_exit(struct dwc3 *dwc) 85 { 86 platform_device_unregister(dwc->xhci); 87 } 88