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 static struct resource generic_resources[] = { 43 { 44 .flags = IORESOURCE_IRQ, 45 }, 46 { 47 .flags = IORESOURCE_MEM, 48 }, 49 }; 50 51 int dwc3_host_init(struct dwc3 *dwc) 52 { 53 struct platform_device *xhci; 54 int ret; 55 56 xhci = platform_device_alloc("xhci", -1); 57 if (!xhci) { 58 dev_err(dwc->dev, "couldn't allocate xHCI device\n"); 59 ret = -ENOMEM; 60 goto err0; 61 } 62 63 dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask); 64 65 xhci->dev.parent = dwc->dev; 66 xhci->dev.dma_mask = dwc->dev->dma_mask; 67 xhci->dev.dma_parms = dwc->dev->dma_parms; 68 69 dwc->xhci = xhci; 70 71 /* setup resources */ 72 generic_resources[0].start = dwc->irq; 73 74 generic_resources[1].start = dwc->res->start; 75 generic_resources[1].end = dwc->res->start + 0x7fff; 76 77 ret = platform_device_add_resources(xhci, generic_resources, 78 ARRAY_SIZE(generic_resources)); 79 if (ret) { 80 dev_err(dwc->dev, "couldn't add resources to xHCI device\n"); 81 goto err1; 82 } 83 84 ret = platform_device_add(xhci); 85 if (ret) { 86 dev_err(dwc->dev, "failed to register xHCI device\n"); 87 goto err1; 88 } 89 90 return 0; 91 92 err1: 93 platform_device_put(xhci); 94 95 err0: 96 return ret; 97 } 98 99 void dwc3_host_exit(struct dwc3 *dwc) 100 { 101 platform_device_unregister(dwc->xhci); 102 } 103