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
dwc3_host_init(struct dwc3 * dwc)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
dwc3_host_exit(struct dwc3 * dwc)78 void dwc3_host_exit(struct dwc3 *dwc)
79 {
80 platform_device_unregister(dwc->xhci);
81 }
82