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 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. The names of the above-listed copyright holders may not be used
18 * to endorse or promote products derived from this software without
19 * specific prior written permission.
20 *
21 * ALTERNATIVELY, this software may be distributed under the terms of the
22 * GNU General Public License ("GPL") version 2, as published by the Free
23 * Software Foundation.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
26 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
27 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
29 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
30 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
31 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
32 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38 #include <linux/platform_device.h>
39
40 #include "core.h"
41
42 static struct resource generic_resources[] = {
43 {
44 .flags = IORESOURCE_IRQ,
45 },
46 {
47 .flags = IORESOURCE_MEM,
48 },
49 };
50
dwc3_host_init(struct dwc3 * dwc)51 int dwc3_host_init(struct dwc3 *dwc)
52 {
53 struct platform_device *xhci;
54 int ret;
55
56 xhci = platform_device_alloc("xhci-hcd", -1);
57 if (!xhci) {
58 dev_err(dwc->dev, "couldn't allocate xHCI device\n");
59 ret = -ENOMEM;
60 goto err0;
61 }
62
63 dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
64
65 xhci->dev.parent = dwc->dev;
66 xhci->dev.dma_mask = dwc->dev->dma_mask;
67 xhci->dev.dma_parms = dwc->dev->dma_parms;
68
69 dwc->xhci = xhci;
70
71 /* setup resources */
72 generic_resources[0].start = dwc->irq;
73
74 generic_resources[1].start = dwc->res->start;
75 generic_resources[1].end = dwc->res->start + 0x7fff;
76
77 ret = platform_device_add_resources(xhci, generic_resources,
78 ARRAY_SIZE(generic_resources));
79 if (ret) {
80 dev_err(dwc->dev, "couldn't add resources to xHCI device\n");
81 goto err1;
82 }
83
84 ret = platform_device_add(xhci);
85 if (ret) {
86 dev_err(dwc->dev, "failed to register xHCI device\n");
87 goto err1;
88 }
89
90 return 0;
91
92 err1:
93 platform_device_put(xhci);
94
95 err0:
96 return ret;
97 }
98
dwc3_host_exit(struct dwc3 * dwc)99 void dwc3_host_exit(struct dwc3 *dwc)
100 {
101 platform_device_unregister(dwc->xhci);
102 }
103