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The Designware USB3 IP can be configured with an internal xHCI. If we're running on such a version, let's start the xHCI stack. Signed-off-by: Felipe Balbi <balbi@ti.com>
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Felipe Balbi
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Dec 12, 2011
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|---|---|---|
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| /** | ||
| * host.c - DesignWare USB3 DRD Controller Host Glue | ||
| * | ||
| * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com | ||
| * | ||
| * Authors: Felipe Balbi <balbi@ti.com>, | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions | ||
| * are met: | ||
| * 1. Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions, and the following disclaimer, | ||
| * without modification. | ||
| * 2. Redistributions in binary form must reproduce the above copyright | ||
| * notice, this list of conditions and the following disclaimer in the | ||
| * documentation and/or other materials provided with the distribution. | ||
| * 3. The names of the above-listed copyright holders may not be used | ||
| * to endorse or promote products derived from this software without | ||
| * specific prior written permission. | ||
| * | ||
| * ALTERNATIVELY, this software may be distributed under the terms of the | ||
| * GNU General Public License ("GPL") version 2, as published by the Free | ||
| * Software Foundation. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | ||
| * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | ||
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | ||
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | ||
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| */ | ||
|
|
||
| #include <linux/module.h> | ||
| #include <linux/kernel.h> | ||
| #include <linux/slab.h> | ||
| #include <linux/spinlock.h> | ||
| #include <linux/platform_device.h> | ||
| #include <linux/pm_runtime.h> | ||
| #include <linux/interrupt.h> | ||
| #include <linux/ioport.h> | ||
| #include <linux/io.h> | ||
| #include <linux/list.h> | ||
| #include <linux/delay.h> | ||
| #include <linux/dma-mapping.h> | ||
|
|
||
| #include "core.h" | ||
| #include "io.h" | ||
|
|
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| #include "debug.h" | ||
|
|
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| static struct resource generic_resources[] = { | ||
| { | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| { | ||
| .flags = IORESOURCE_MEM, | ||
| }, | ||
| }; | ||
|
|
||
| int dwc3_host_init(struct dwc3 *dwc) | ||
| { | ||
| struct platform_device *xhci; | ||
| int ret; | ||
|
|
||
| xhci = platform_device_alloc("xhci", -1); | ||
| if (!xhci) { | ||
| dev_err(dwc->dev, "couldn't allocate xHCI device\n"); | ||
| ret = -ENOMEM; | ||
| goto err0; | ||
| } | ||
|
|
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| dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask); | ||
|
|
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| xhci->dev.parent = dwc->dev; | ||
| xhci->dev.dma_mask = dwc->dev->dma_mask; | ||
| xhci->dev.dma_parms = dwc->dev->dma_parms; | ||
|
|
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| dwc->xhci = xhci; | ||
|
|
||
| /* setup resources */ | ||
| generic_resources[0].start = dwc->irq; | ||
|
|
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| generic_resources[1].start = dwc->res->start; | ||
| generic_resources[1].end = dwc->res->start + 0x7fff; | ||
|
|
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| ret = platform_device_add_resources(xhci, generic_resources, | ||
| ARRAY_SIZE(generic_resources)); | ||
| if (ret) { | ||
| dev_err(dwc->dev, "couldn't add resources to xHCI device\n"); | ||
| goto err1; | ||
| } | ||
|
|
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| ret = platform_device_add(xhci); | ||
| if (ret) { | ||
| dev_err(dwc->dev, "failed to register xHCI device\n"); | ||
| goto err1; | ||
| } | ||
|
|
||
| return 0; | ||
|
|
||
| err1: | ||
| platform_device_put(xhci); | ||
|
|
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| err0: | ||
| return ret; | ||
| } | ||
|
|
||
| void dwc3_host_exit(struct dwc3 *dwc) | ||
| { | ||
| platform_device_unregister(dwc->xhci); | ||
| } |