Commit | Line | Data |
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d07e8819 FB |
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 | * | |
5945f789 FB |
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. | |
d07e8819 | 11 | * |
5945f789 FB |
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. | |
d07e8819 FB |
16 | */ |
17 | ||
d07e8819 | 18 | #include <linux/platform_device.h> |
d07e8819 FB |
19 | |
20 | #include "core.h" | |
d07e8819 | 21 | |
d07e8819 FB |
22 | int dwc3_host_init(struct dwc3 *dwc) |
23 | { | |
95b57df4 | 24 | struct property_entry props[2]; |
d07e8819 | 25 | struct platform_device *xhci; |
322832f2 RQ |
26 | int ret, irq; |
27 | struct resource *res; | |
28 | struct platform_device *dwc3_pdev = to_platform_device(dwc->dev); | |
29 | ||
30 | irq = platform_get_irq_byname(dwc3_pdev, "host"); | |
31 | if (irq == -EPROBE_DEFER) | |
32 | return irq; | |
33 | ||
34 | if (irq <= 0) { | |
35 | irq = platform_get_irq_byname(dwc3_pdev, "dwc_usb3"); | |
36 | if (irq == -EPROBE_DEFER) | |
37 | return irq; | |
38 | ||
39 | if (irq <= 0) { | |
40 | irq = platform_get_irq(dwc3_pdev, 0); | |
41 | if (irq <= 0) { | |
42 | if (irq != -EPROBE_DEFER) { | |
43 | dev_err(dwc->dev, | |
44 | "missing host IRQ\n"); | |
45 | } | |
46 | if (!irq) | |
47 | irq = -EINVAL; | |
48 | return irq; | |
49 | } else { | |
50 | res = platform_get_resource(dwc3_pdev, | |
51 | IORESOURCE_IRQ, 0); | |
52 | } | |
53 | } else { | |
54 | res = platform_get_resource_byname(dwc3_pdev, | |
55 | IORESOURCE_IRQ, | |
56 | "dwc_usb3"); | |
57 | } | |
58 | ||
59 | } else { | |
60 | res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ, | |
61 | "host"); | |
62 | } | |
63 | ||
64 | dwc->xhci_resources[1].start = irq; | |
65 | dwc->xhci_resources[1].end = irq; | |
66 | dwc->xhci_resources[1].flags = res->flags; | |
67 | dwc->xhci_resources[1].name = res->name; | |
d07e8819 | 68 | |
52758bcb | 69 | xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO); |
d07e8819 FB |
70 | if (!xhci) { |
71 | dev_err(dwc->dev, "couldn't allocate xHCI device\n"); | |
08f871a3 | 72 | return -ENOMEM; |
d07e8819 FB |
73 | } |
74 | ||
75 | dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask); | |
76 | ||
77 | xhci->dev.parent = dwc->dev; | |
78 | xhci->dev.dma_mask = dwc->dev->dma_mask; | |
79 | xhci->dev.dma_parms = dwc->dev->dma_parms; | |
80 | ||
81 | dwc->xhci = xhci; | |
82 | ||
51249dca IS |
83 | ret = platform_device_add_resources(xhci, dwc->xhci_resources, |
84 | DWC3_XHCI_RESOURCES_NUM); | |
d07e8819 FB |
85 | if (ret) { |
86 | dev_err(dwc->dev, "couldn't add resources to xHCI device\n"); | |
87 | goto err1; | |
88 | } | |
89 | ||
95b57df4 | 90 | memset(props, 0, sizeof(struct property_entry) * ARRAY_SIZE(props)); |
b2f463e1 | 91 | |
95b57df4 HK |
92 | if (dwc->usb3_lpm_capable) { |
93 | props[0].name = "usb3-lpm-capable"; | |
94 | ret = platform_device_add_properties(xhci, props); | |
95 | if (ret) { | |
96 | dev_err(dwc->dev, "failed to add properties to xHCI\n"); | |
97 | goto err1; | |
98 | } | |
b2f463e1 PA |
99 | } |
100 | ||
08f871a3 HK |
101 | phy_create_lookup(dwc->usb2_generic_phy, "usb2-phy", |
102 | dev_name(&xhci->dev)); | |
103 | phy_create_lookup(dwc->usb3_generic_phy, "usb3-phy", | |
104 | dev_name(&xhci->dev)); | |
105 | ||
d07e8819 FB |
106 | ret = platform_device_add(xhci); |
107 | if (ret) { | |
108 | dev_err(dwc->dev, "failed to register xHCI device\n"); | |
08f871a3 | 109 | goto err2; |
d07e8819 FB |
110 | } |
111 | ||
112 | return 0; | |
08f871a3 HK |
113 | err2: |
114 | phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy", | |
115 | dev_name(&xhci->dev)); | |
116 | phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy", | |
117 | dev_name(&xhci->dev)); | |
d07e8819 FB |
118 | err1: |
119 | platform_device_put(xhci); | |
d07e8819 FB |
120 | return ret; |
121 | } | |
122 | ||
123 | void dwc3_host_exit(struct dwc3 *dwc) | |
124 | { | |
08f871a3 HK |
125 | phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy", |
126 | dev_name(&dwc->xhci->dev)); | |
127 | phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy", | |
128 | dev_name(&dwc->xhci->dev)); | |
d07e8819 FB |
129 | platform_device_unregister(dwc->xhci); |
130 | } |