]>
Commit | Line | Data |
---|---|---|
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 | |
6d729a55 FB |
22 | static int dwc3_host_get_irq(struct dwc3 *dwc) |
23 | { | |
24 | struct platform_device *dwc3_pdev = to_platform_device(dwc->dev); | |
25 | int irq; | |
26 | ||
27 | irq = platform_get_irq_byname(dwc3_pdev, "host"); | |
28 | if (irq > 0) | |
29 | goto out; | |
30 | ||
31 | if (irq == -EPROBE_DEFER) | |
32 | goto out; | |
33 | ||
34 | irq = platform_get_irq_byname(dwc3_pdev, "dwc_usb3"); | |
35 | if (irq > 0) | |
36 | goto out; | |
37 | ||
38 | if (irq == -EPROBE_DEFER) | |
39 | goto out; | |
40 | ||
41 | irq = platform_get_irq(dwc3_pdev, 0); | |
42 | if (irq > 0) | |
43 | goto out; | |
44 | ||
45 | if (irq != -EPROBE_DEFER) | |
46 | dev_err(dwc->dev, "missing host IRQ\n"); | |
47 | ||
48 | if (!irq) | |
49 | irq = -EINVAL; | |
50 | ||
51 | out: | |
52 | return irq; | |
53 | } | |
54 | ||
d07e8819 FB |
55 | int dwc3_host_init(struct dwc3 *dwc) |
56 | { | |
e42a5dbb | 57 | struct property_entry props[3]; |
d07e8819 | 58 | struct platform_device *xhci; |
322832f2 RQ |
59 | int ret, irq; |
60 | struct resource *res; | |
61 | struct platform_device *dwc3_pdev = to_platform_device(dwc->dev); | |
e42a5dbb | 62 | int prop_idx = 0; |
322832f2 | 63 | |
6d729a55 FB |
64 | irq = dwc3_host_get_irq(dwc); |
65 | if (irq < 0) | |
322832f2 RQ |
66 | return irq; |
67 | ||
6d729a55 FB |
68 | res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ, "host"); |
69 | if (!res) | |
322832f2 | 70 | res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ, |
6d729a55 FB |
71 | "dwc_usb3"); |
72 | if (!res) | |
73 | res = platform_get_resource(dwc3_pdev, IORESOURCE_IRQ, 0); | |
74 | if (!res) | |
75 | return -ENOMEM; | |
322832f2 RQ |
76 | |
77 | dwc->xhci_resources[1].start = irq; | |
78 | dwc->xhci_resources[1].end = irq; | |
79 | dwc->xhci_resources[1].flags = res->flags; | |
80 | dwc->xhci_resources[1].name = res->name; | |
d07e8819 | 81 | |
52758bcb | 82 | xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO); |
d07e8819 FB |
83 | if (!xhci) { |
84 | dev_err(dwc->dev, "couldn't allocate xHCI device\n"); | |
08f871a3 | 85 | return -ENOMEM; |
d07e8819 FB |
86 | } |
87 | ||
d07e8819 | 88 | xhci->dev.parent = dwc->dev; |
d07e8819 FB |
89 | |
90 | dwc->xhci = xhci; | |
91 | ||
51249dca IS |
92 | ret = platform_device_add_resources(xhci, dwc->xhci_resources, |
93 | DWC3_XHCI_RESOURCES_NUM); | |
d07e8819 FB |
94 | if (ret) { |
95 | dev_err(dwc->dev, "couldn't add resources to xHCI device\n"); | |
96 | goto err1; | |
97 | } | |
98 | ||
95b57df4 | 99 | memset(props, 0, sizeof(struct property_entry) * ARRAY_SIZE(props)); |
b2f463e1 | 100 | |
e42a5dbb FB |
101 | if (dwc->usb3_lpm_capable) |
102 | props[prop_idx++].name = "usb3-lpm-capable"; | |
103 | ||
104 | /** | |
105 | * WORKAROUND: dwc3 revisions <=3.00a have a limitation | |
106 | * where Port Disable command doesn't work. | |
107 | * | |
108 | * The suggested workaround is that we avoid Port Disable | |
109 | * completely. | |
110 | * | |
111 | * This following flag tells XHCI to do just that. | |
112 | */ | |
113 | if (dwc->revision <= DWC3_REVISION_300A) | |
114 | props[prop_idx++].name = "quirk-broken-port-ped"; | |
115 | ||
116 | if (prop_idx) { | |
95b57df4 HK |
117 | ret = platform_device_add_properties(xhci, props); |
118 | if (ret) { | |
119 | dev_err(dwc->dev, "failed to add properties to xHCI\n"); | |
120 | goto err1; | |
121 | } | |
b2f463e1 PA |
122 | } |
123 | ||
08f871a3 | 124 | phy_create_lookup(dwc->usb2_generic_phy, "usb2-phy", |
d64ff406 | 125 | dev_name(dwc->dev)); |
08f871a3 | 126 | phy_create_lookup(dwc->usb3_generic_phy, "usb3-phy", |
d64ff406 | 127 | dev_name(dwc->dev)); |
08f871a3 | 128 | |
d07e8819 FB |
129 | ret = platform_device_add(xhci); |
130 | if (ret) { | |
131 | dev_err(dwc->dev, "failed to register xHCI device\n"); | |
08f871a3 | 132 | goto err2; |
d07e8819 FB |
133 | } |
134 | ||
135 | return 0; | |
08f871a3 HK |
136 | err2: |
137 | phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy", | |
d64ff406 | 138 | dev_name(dwc->dev)); |
08f871a3 | 139 | phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy", |
d64ff406 | 140 | dev_name(dwc->dev)); |
d07e8819 FB |
141 | err1: |
142 | platform_device_put(xhci); | |
d07e8819 FB |
143 | return ret; |
144 | } | |
145 | ||
146 | void dwc3_host_exit(struct dwc3 *dwc) | |
147 | { | |
08f871a3 | 148 | phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy", |
d64ff406 | 149 | dev_name(dwc->dev)); |
08f871a3 | 150 | phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy", |
d64ff406 | 151 | dev_name(dwc->dev)); |
d07e8819 FB |
152 | platform_device_unregister(dwc->xhci); |
153 | } |