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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}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * host.c - DesignWare USB3 DRD Controller Host Glue
4 *
5 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com
6 *
7 * Authors: Felipe Balbi <balbi@ti.com>,
8 */
9
10#include <linux/acpi.h>
11#include <linux/platform_device.h>
12
13#include "core.h"
14
15static int dwc3_host_get_irq(struct dwc3 *dwc)
16{
17 struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);
18 int irq;
19
20 irq = platform_get_irq_byname_optional(dwc3_pdev, "host");
21 if (irq > 0)
22 goto out;
23
24 if (irq == -EPROBE_DEFER)
25 goto out;
26
27 irq = platform_get_irq_byname_optional(dwc3_pdev, "dwc_usb3");
28 if (irq > 0)
29 goto out;
30
31 if (irq == -EPROBE_DEFER)
32 goto out;
33
34 irq = platform_get_irq(dwc3_pdev, 0);
35 if (irq > 0)
36 goto out;
37
38 if (!irq)
39 irq = -EINVAL;
40
41out:
42 return irq;
43}
44
45int dwc3_host_init(struct dwc3 *dwc)
46{
47 struct property_entry props[4];
48 struct platform_device *xhci;
49 int ret, irq;
50 struct resource *res;
51 struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);
52 int prop_idx = 0;
53
54 irq = dwc3_host_get_irq(dwc);
55 if (irq < 0)
56 return irq;
57
58 res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ, "host");
59 if (!res)
60 res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ,
61 "dwc_usb3");
62 if (!res)
63 res = platform_get_resource(dwc3_pdev, IORESOURCE_IRQ, 0);
64 if (!res)
65 return -ENOMEM;
66
67 dwc->xhci_resources[1].start = irq;
68 dwc->xhci_resources[1].end = irq;
69 dwc->xhci_resources[1].flags = res->flags;
70 dwc->xhci_resources[1].name = res->name;
71
72 xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
73 if (!xhci) {
74 dev_err(dwc->dev, "couldn't allocate xHCI device\n");
75 return -ENOMEM;
76 }
77
78 xhci->dev.parent = dwc->dev;
79 ACPI_COMPANION_SET(&xhci->dev, ACPI_COMPANION(dwc->dev));
80
81 dwc->xhci = xhci;
82
83 ret = platform_device_add_resources(xhci, dwc->xhci_resources,
84 DWC3_XHCI_RESOURCES_NUM);
85 if (ret) {
86 dev_err(dwc->dev, "couldn't add resources to xHCI device\n");
87 goto err;
88 }
89
90 memset(props, 0, sizeof(struct property_entry) * ARRAY_SIZE(props));
91
92 if (dwc->usb3_lpm_capable)
93 props[prop_idx++] = PROPERTY_ENTRY_BOOL("usb3-lpm-capable");
94
95 if (dwc->usb2_lpm_disable)
96 props[prop_idx++] = PROPERTY_ENTRY_BOOL("usb2-lpm-disable");
97
98 /**
99 * WORKAROUND: dwc3 revisions <=3.00a have a limitation
100 * where Port Disable command doesn't work.
101 *
102 * The suggested workaround is that we avoid Port Disable
103 * completely.
104 *
105 * This following flag tells XHCI to do just that.
106 */
107 if (DWC3_VER_IS_WITHIN(DWC3, ANY, 300A))
108 props[prop_idx++] = PROPERTY_ENTRY_BOOL("quirk-broken-port-ped");
109
110 if (prop_idx) {
111 ret = device_create_managed_software_node(&xhci->dev, props, NULL);
112 if (ret) {
113 dev_err(dwc->dev, "failed to add properties to xHCI\n");
114 goto err;
115 }
116 }
117
118 ret = platform_device_add(xhci);
119 if (ret) {
120 dev_err(dwc->dev, "failed to register xHCI device\n");
121 goto err;
122 }
123
124 return 0;
125err:
126 platform_device_put(xhci);
127 return ret;
128}
129
130void dwc3_host_exit(struct dwc3 *dwc)
131{
132 platform_device_unregister(dwc->xhci);
133}