2 * host.c - DesignWare USB3 DRD Controller Host Glue
4 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
6 * Authors: Felipe Balbi <balbi@ti.com>,
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.
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.
18 #include <linux/platform_device.h>
22 static int dwc3_host_get_irq(struct dwc3 *dwc)
24 struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);
27 irq = platform_get_irq_byname(dwc3_pdev, "host");
31 if (irq == -EPROBE_DEFER)
34 irq = platform_get_irq_byname(dwc3_pdev, "dwc_usb3");
38 if (irq == -EPROBE_DEFER)
41 irq = platform_get_irq(dwc3_pdev, 0);
45 if (irq != -EPROBE_DEFER)
46 dev_err(dwc->dev, "missing host IRQ\n");
55 int dwc3_host_init(struct dwc3 *dwc)
57 struct property_entry props[2];
58 struct platform_device *xhci;
61 struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);
63 irq = dwc3_host_get_irq(dwc);
67 res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ, "host");
69 res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ,
72 res = platform_get_resource(dwc3_pdev, IORESOURCE_IRQ, 0);
76 dwc->xhci_resources[1].start = irq;
77 dwc->xhci_resources[1].end = irq;
78 dwc->xhci_resources[1].flags = res->flags;
79 dwc->xhci_resources[1].name = res->name;
81 xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
83 dev_err(dwc->dev, "couldn't allocate xHCI device\n");
87 xhci->dev.parent = dwc->dev;
91 ret = platform_device_add_resources(xhci, dwc->xhci_resources,
92 DWC3_XHCI_RESOURCES_NUM);
94 dev_err(dwc->dev, "couldn't add resources to xHCI device\n");
98 memset(props, 0, sizeof(struct property_entry) * ARRAY_SIZE(props));
100 if (dwc->usb3_lpm_capable) {
101 props[0].name = "usb3-lpm-capable";
102 ret = platform_device_add_properties(xhci, props);
104 dev_err(dwc->dev, "failed to add properties to xHCI\n");
109 phy_create_lookup(dwc->usb2_generic_phy, "usb2-phy",
111 phy_create_lookup(dwc->usb3_generic_phy, "usb3-phy",
114 ret = platform_device_add(xhci);
116 dev_err(dwc->dev, "failed to register xHCI device\n");
122 phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy",
124 phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy",
127 platform_device_put(xhci);
131 void dwc3_host_exit(struct dwc3 *dwc)
133 phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy",
135 phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy",
137 platform_device_unregister(dwc->xhci);