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
23int 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;
72err2:
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));
77err1:
78	platform_device_put(xhci);
79	return ret;
80}
81
82void 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}