drivers/usb/host/ehci-mv.c - maze/linux - Git at Google

 /*
  * Copyright (C) 2011 Marvell International Ltd. All rights reserved.
  * Author: Chao Xie <chao.xie@marvell.com>
  *        Neil Zhang <zhangwm@marvell.com>
  *
  * This program is free software; you can redistribute  it and/or modify it
  * under  the terms of  the GNU General  Public License as published by the
  * Free Software Foundation;  either version 2 of the  License, or (at your
  * option) any later version.
  */

 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/usb/otg.h>
 #include <linux/platform_data/mv_usb.h>

 #define CAPLENGTH_MASK         (0xff)

 struct ehci_hcd_mv {
 	struct usb_hcd *hcd;

 	/* Which mode does this ehci running OTG/Host ? */
 	int mode;

 	void __iomem *phy_regs;
 	void __iomem *cap_regs;
 	void __iomem *op_regs;

 	struct otg_transceiver *otg;

 	struct mv_usb_platform_data *pdata;

 	/* clock source and total clock number */
 	unsigned int clknum;
 	struct clk *clk[0];
 };

 static void ehci_clock_enable(struct ehci_hcd_mv *ehci_mv)
 {
 	unsigned int i;

 	for (i = 0; i < ehci_mv->clknum; i++)
 		clk_enable(ehci_mv->clk[i]);
 }

 static void ehci_clock_disable(struct ehci_hcd_mv *ehci_mv)
 {
 	unsigned int i;

 	for (i = 0; i < ehci_mv->clknum; i++)
 		clk_disable(ehci_mv->clk[i]);
 }

 static int mv_ehci_enable(struct ehci_hcd_mv *ehci_mv)
 {
 	int retval;

 	ehci_clock_enable(ehci_mv);
 	if (ehci_mv->pdata->phy_init) {
 		retval = ehci_mv->pdata->phy_init(ehci_mv->phy_regs);
 		if (retval)
 			return retval;
 	}

 	return 0;
 }

 static void mv_ehci_disable(struct ehci_hcd_mv *ehci_mv)
 {
 	if (ehci_mv->pdata->phy_deinit)
 		ehci_mv->pdata->phy_deinit(ehci_mv->phy_regs);
 	ehci_clock_disable(ehci_mv);
 }

 static int mv_ehci_reset(struct usb_hcd *hcd)
 {
 	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 	struct device *dev = hcd->self.controller;
 	struct ehci_hcd_mv *ehci_mv = dev_get_drvdata(dev);
 	int retval;

 	if (ehci_mv == NULL) {
 		dev_err(dev, "Can not find private ehci data\n");
 		return -ENODEV;
 	}

 	/*
 	 * data structure init
 	 */
 	retval = ehci_init(hcd);
 	if (retval) {
 		dev_err(dev, "ehci_init failed %d\n", retval);
 		return retval;
 	}

 	hcd->has_tt = 1;
 	ehci->sbrn = 0x20;

 	retval = ehci_reset(ehci);
 	if (retval) {
 		dev_err(dev, "ehci_reset failed %d\n", retval);
 		return retval;
 	}

 	return 0;
 }

 static const struct hc_driver mv_ehci_hc_driver = {
 	.description = hcd_name,
 	.product_desc = "Marvell EHCI",
 	.hcd_priv_size = sizeof(struct ehci_hcd),

 	/*
 	 * generic hardware linkage
 	 */
 	.irq = ehci_irq,
 	.flags = HCD_MEMORY | HCD_USB2,

 	/*
 	 * basic lifecycle operations
 	 */
 	.reset = mv_ehci_reset,
 	.start = ehci_run,
 	.stop = ehci_stop,
 	.shutdown = ehci_shutdown,

 	/*
 	 * managing i/o requests and associated device resources
 	 */
 	.urb_enqueue = ehci_urb_enqueue,
 	.urb_dequeue = ehci_urb_dequeue,
 	.endpoint_disable = ehci_endpoint_disable,
 	.endpoint_reset = ehci_endpoint_reset,
 	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,

 	/*
 	 * scheduling support
 	 */
 	.get_frame_number = ehci_get_frame,

 	/*
 	 * root hub support
 	 */
 	.hub_status_data = ehci_hub_status_data,
 	.hub_control = ehci_hub_control,
 	.bus_suspend = ehci_bus_suspend,
 	.bus_resume = ehci_bus_resume,
 };

 static int mv_ehci_probe(struct platform_device *pdev)
 {
 	struct mv_usb_platform_data *pdata = pdev->dev.platform_data;
 	struct usb_hcd *hcd;
 	struct ehci_hcd *ehci;
 	struct ehci_hcd_mv *ehci_mv;
 	struct resource *r;
 	int clk_i, retval = -ENODEV;
 	u32 offset;
 	size_t size;

 	if (!pdata) {
 		dev_err(&pdev->dev, "missing platform_data\n");
 		return -ENODEV;
 	}

 	if (usb_disabled())
 		return -ENODEV;

 	hcd = usb_create_hcd(&mv_ehci_hc_driver, &pdev->dev, "mv ehci");
 	if (!hcd)
 		return -ENOMEM;

 	size = sizeof(*ehci_mv) + sizeof(struct clk *) * pdata->clknum;
 	ehci_mv = kzalloc(size, GFP_KERNEL);
 	if (ehci_mv == NULL) {
 		dev_err(&pdev->dev, "cannot allocate ehci_hcd_mv\n");
 		retval = -ENOMEM;
 		goto err_put_hcd;
 	}

 	platform_set_drvdata(pdev, ehci_mv);
 	ehci_mv->pdata = pdata;
 	ehci_mv->hcd = hcd;

 	ehci_mv->clknum = pdata->clknum;
 	for (clk_i = 0; clk_i < ehci_mv->clknum; clk_i++) {
 		ehci_mv->clk[clk_i] =
 		    clk_get(&pdev->dev, pdata->clkname[clk_i]);
 		if (IS_ERR(ehci_mv->clk[clk_i])) {
 			dev_err(&pdev->dev, "error get clck \"%s\"\n",
 				pdata->clkname[clk_i]);
 			retval = PTR_ERR(ehci_mv->clk[clk_i]);
 			goto err_put_clk;
 		}
 	}

 	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phyregs");
 	if (r == NULL) {
 		dev_err(&pdev->dev, "no phy I/O memory resource defined\n");
 		retval = -ENODEV;
 		goto err_put_clk;
 	}

 	ehci_mv->phy_regs = ioremap(r->start, resource_size(r));
 	if (ehci_mv->phy_regs == 0) {
 		dev_err(&pdev->dev, "failed to map phy I/O memory\n");
 		retval = -EFAULT;
 		goto err_put_clk;
 	}

 	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "capregs");
 	if (!r) {
 		dev_err(&pdev->dev, "no I/O memory resource defined\n");
 		retval = -ENODEV;
 		goto err_iounmap_phyreg;
 	}

 	ehci_mv->cap_regs = ioremap(r->start, resource_size(r));
 	if (ehci_mv->cap_regs == NULL) {
 		dev_err(&pdev->dev, "failed to map I/O memory\n");
 		retval = -EFAULT;
 		goto err_iounmap_phyreg;
 	}

 	retval = mv_ehci_enable(ehci_mv);
 	if (retval) {
 		dev_err(&pdev->dev, "init phy error %d\n", retval);
 		goto err_iounmap_capreg;
 	}

 	offset = readl(ehci_mv->cap_regs) & CAPLENGTH_MASK;
 	ehci_mv->op_regs =
 		(void __iomem *) ((unsigned long) ehci_mv->cap_regs + offset);

 	hcd->rsrc_start = r->start;
 	hcd->rsrc_len = r->end - r->start + 1;
 	hcd->regs = ehci_mv->op_regs;

 	hcd->irq = platform_get_irq(pdev, 0);
 	if (!hcd->irq) {
 		dev_err(&pdev->dev, "Cannot get irq.");
 		retval = -ENODEV;
 		goto err_disable_clk;
 	}

 	ehci = hcd_to_ehci(hcd);
 	ehci->caps = (struct ehci_caps *) ehci_mv->cap_regs;
 	ehci->regs = (struct ehci_regs *) ehci_mv->op_regs;
 	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);

 	ehci_mv->mode = pdata->mode;
 	if (ehci_mv->mode == MV_USB_MODE_OTG) {
 #ifdef CONFIG_USB_OTG_UTILS
 		ehci_mv->otg = otg_get_transceiver();
 		if (!ehci_mv->otg) {
 			dev_err(&pdev->dev,
 				"unable to find transceiver\n");
 			retval = -ENODEV;
 			goto err_disable_clk;
 		}

 		retval = otg_set_host(ehci_mv->otg, &hcd->self);
 		if (retval < 0) {
 			dev_err(&pdev->dev,
 				"unable to register with transceiver\n");
 			retval = -ENODEV;
 			goto err_put_transceiver;
 		}
 		/* otg will enable clock before use as host */
 		mv_ehci_disable(ehci_mv);
 #else
 		dev_info(&pdev->dev, "MV_USB_MODE_OTG "
 			 "must have CONFIG_USB_OTG_UTILS enabled\n");
 		goto err_disable_clk;
 #endif
 	} else {
 		if (pdata->set_vbus)
 			pdata->set_vbus(1);

 		retval = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED);
 		if (retval) {
 			dev_err(&pdev->dev,
 				"failed to add hcd with err %d\n", retval);
 			goto err_set_vbus;
 		}
 	}

 	if (pdata->private_init)
 		pdata->private_init(ehci_mv->op_regs, ehci_mv->phy_regs);

 	dev_info(&pdev->dev,
 		 "successful find EHCI device with regs 0x%p irq %d"
 		 " working in %s mode\n", hcd->regs, hcd->irq,
 		 ehci_mv->mode == MV_USB_MODE_OTG ? "OTG" : "Host");

 	return 0;

 err_set_vbus:
 	if (pdata->set_vbus)
 		pdata->set_vbus(0);
 #ifdef CONFIG_USB_OTG_UTILS
 err_put_transceiver:
 	if (ehci_mv->otg)
 		otg_put_transceiver(ehci_mv->otg);
 #endif
 err_disable_clk:
 	mv_ehci_disable(ehci_mv);
 err_iounmap_capreg:
 	iounmap(ehci_mv->cap_regs);
 err_iounmap_phyreg:
 	iounmap(ehci_mv->phy_regs);
 err_put_clk:
 	for (clk_i--; clk_i >= 0; clk_i--)
 		clk_put(ehci_mv->clk[clk_i]);
 	platform_set_drvdata(pdev, NULL);
 	kfree(ehci_mv);
 err_put_hcd:
 	usb_put_hcd(hcd);

 	return retval;
 }

 static int mv_ehci_remove(struct platform_device *pdev)
 {
 	struct ehci_hcd_mv *ehci_mv = platform_get_drvdata(pdev);
 	struct usb_hcd *hcd = ehci_mv->hcd;
 	int clk_i;

 	if (hcd->rh_registered)
 		usb_remove_hcd(hcd);

 	if (ehci_mv->otg) {
 		otg_set_host(ehci_mv->otg, NULL);
 		otg_put_transceiver(ehci_mv->otg);
 	}

 	if (ehci_mv->mode == MV_USB_MODE_HOST) {
 		if (ehci_mv->pdata->set_vbus)
 			ehci_mv->pdata->set_vbus(0);

 		mv_ehci_disable(ehci_mv);
 	}

 	iounmap(ehci_mv->cap_regs);
 	iounmap(ehci_mv->phy_regs);

 	for (clk_i = 0; clk_i < ehci_mv->clknum; clk_i++)
 		clk_put(ehci_mv->clk[clk_i]);

 	platform_set_drvdata(pdev, NULL);

 	kfree(ehci_mv);
 	usb_put_hcd(hcd);

 	return 0;
 }

 MODULE_ALIAS("mv-ehci");

 static const struct platform_device_id ehci_id_table[] = {
 	{"pxa-u2oehci", PXA_U2OEHCI},
 	{"pxa-sph", PXA_SPH},
 	{"mmp3-hsic", MMP3_HSIC},
 	{"mmp3-fsic", MMP3_FSIC},
 	{},
 };

 static void mv_ehci_shutdown(struct platform_device *pdev)
 {
 	struct ehci_hcd_mv *ehci_mv = platform_get_drvdata(pdev);
 	struct usb_hcd *hcd = ehci_mv->hcd;

 	if (!hcd->rh_registered)
 		return;

 	if (hcd->driver->shutdown)
 		hcd->driver->shutdown(hcd);
 }

 static struct platform_driver ehci_mv_driver = {
 	.probe = mv_ehci_probe,
 	.remove = mv_ehci_remove,
 	.shutdown = mv_ehci_shutdown,
 	.driver = {
 		   .name = "mv-ehci",
 		   .bus = &platform_bus_type,
 		   },
 	.id_table = ehci_id_table,
 };
	/*
	* Copyright (C) 2011 Marvell International Ltd. All rights reserved.
	* Author: Chao Xie <chao.xie@marvell.com>
	* Neil Zhang <zhangwm@marvell.com>
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License as published by the
	* Free Software Foundation; either version 2 of the License, or (at your
	* option) any later version.
	*/

	#include <linux/kernel.h>
	#include <linux/module.h>
	#include <linux/platform_device.h>
	#include <linux/clk.h>
	#include <linux/usb/otg.h>
	#include <linux/platform_data/mv_usb.h>

	#define CAPLENGTH_MASK (0xff)

	struct ehci_hcd_mv {
	struct usb_hcd *hcd;

	/* Which mode does this ehci running OTG/Host ? */
	int mode;

	void __iomem *phy_regs;
	void __iomem *cap_regs;
	void __iomem *op_regs;

	struct otg_transceiver *otg;

	struct mv_usb_platform_data *pdata;

	/* clock source and total clock number */
	unsigned int clknum;
	struct clk *clk[0];
	};

	static void ehci_clock_enable(struct ehci_hcd_mv *ehci_mv)
	{
	unsigned int i;

	for (i = 0; i < ehci_mv->clknum; i++)
	clk_enable(ehci_mv->clk[i]);
	}

	static void ehci_clock_disable(struct ehci_hcd_mv *ehci_mv)
	{
	unsigned int i;

	for (i = 0; i < ehci_mv->clknum; i++)
	clk_disable(ehci_mv->clk[i]);
	}

	static int mv_ehci_enable(struct ehci_hcd_mv *ehci_mv)
	{
	int retval;

	ehci_clock_enable(ehci_mv);
	if (ehci_mv->pdata->phy_init) {
	retval = ehci_mv->pdata->phy_init(ehci_mv->phy_regs);
	if (retval)
	return retval;
	}

	return 0;
	}

	static void mv_ehci_disable(struct ehci_hcd_mv *ehci_mv)
	{
	if (ehci_mv->pdata->phy_deinit)
	ehci_mv->pdata->phy_deinit(ehci_mv->phy_regs);
	ehci_clock_disable(ehci_mv);
	}

	static int mv_ehci_reset(struct usb_hcd *hcd)
	{
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
	struct device *dev = hcd->self.controller;
	struct ehci_hcd_mv *ehci_mv = dev_get_drvdata(dev);
	int retval;

	if (ehci_mv == NULL) {
	dev_err(dev, "Can not find private ehci data\n");
	return -ENODEV;
	}

	/*
	* data structure init
	*/
	retval = ehci_init(hcd);
	if (retval) {
	dev_err(dev, "ehci_init failed %d\n", retval);
	return retval;
	}

	hcd->has_tt = 1;
	ehci->sbrn = 0x20;

	retval = ehci_reset(ehci);
	if (retval) {
	dev_err(dev, "ehci_reset failed %d\n", retval);
	return retval;
	}

	return 0;
	}

	static const struct hc_driver mv_ehci_hc_driver = {
	.description = hcd_name,
	.product_desc = "Marvell EHCI",
	.hcd_priv_size = sizeof(struct ehci_hcd),

	/*
	* generic hardware linkage
	*/
	.irq = ehci_irq,
	.flags = HCD_MEMORY \| HCD_USB2,

	/*
	* basic lifecycle operations
	*/
	.reset = mv_ehci_reset,
	.start = ehci_run,
	.stop = ehci_stop,
	.shutdown = ehci_shutdown,

	/*
	* managing i/o requests and associated device resources
	*/
	.urb_enqueue = ehci_urb_enqueue,
	.urb_dequeue = ehci_urb_dequeue,
	.endpoint_disable = ehci_endpoint_disable,
	.endpoint_reset = ehci_endpoint_reset,
	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,

	/*
	* scheduling support
	*/
	.get_frame_number = ehci_get_frame,

	/*
	* root hub support
	*/
	.hub_status_data = ehci_hub_status_data,
	.hub_control = ehci_hub_control,
	.bus_suspend = ehci_bus_suspend,
	.bus_resume = ehci_bus_resume,
	};

	static int mv_ehci_probe(struct platform_device *pdev)
	{
	struct mv_usb_platform_data *pdata = pdev->dev.platform_data;
	struct usb_hcd *hcd;
	struct ehci_hcd *ehci;
	struct ehci_hcd_mv *ehci_mv;
	struct resource *r;
	int clk_i, retval = -ENODEV;
	u32 offset;
	size_t size;

	if (!pdata) {
	dev_err(&pdev->dev, "missing platform_data\n");
	return -ENODEV;
	}

	if (usb_disabled())
	return -ENODEV;

	hcd = usb_create_hcd(&mv_ehci_hc_driver, &pdev->dev, "mv ehci");
	if (!hcd)
	return -ENOMEM;

	size = sizeof(ehci_mv) + sizeof(struct clk ) * pdata->clknum;
	ehci_mv = kzalloc(size, GFP_KERNEL);
	if (ehci_mv == NULL) {
	dev_err(&pdev->dev, "cannot allocate ehci_hcd_mv\n");
	retval = -ENOMEM;
	goto err_put_hcd;
	}

	platform_set_drvdata(pdev, ehci_mv);
	ehci_mv->pdata = pdata;
	ehci_mv->hcd = hcd;

	ehci_mv->clknum = pdata->clknum;
	for (clk_i = 0; clk_i < ehci_mv->clknum; clk_i++) {
	ehci_mv->clk[clk_i] =
	clk_get(&pdev->dev, pdata->clkname[clk_i]);
	if (IS_ERR(ehci_mv->clk[clk_i])) {
	dev_err(&pdev->dev, "error get clck \"%s\"\n",
	pdata->clkname[clk_i]);
	retval = PTR_ERR(ehci_mv->clk[clk_i]);
	goto err_put_clk;
	}
	}

	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phyregs");
	if (r == NULL) {
	dev_err(&pdev->dev, "no phy I/O memory resource defined\n");
	retval = -ENODEV;
	goto err_put_clk;
	}

	ehci_mv->phy_regs = ioremap(r->start, resource_size(r));
	if (ehci_mv->phy_regs == 0) {
	dev_err(&pdev->dev, "failed to map phy I/O memory\n");
	retval = -EFAULT;
	goto err_put_clk;
	}

	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "capregs");
	if (!r) {
	dev_err(&pdev->dev, "no I/O memory resource defined\n");
	retval = -ENODEV;
	goto err_iounmap_phyreg;
	}

	ehci_mv->cap_regs = ioremap(r->start, resource_size(r));
	if (ehci_mv->cap_regs == NULL) {
	dev_err(&pdev->dev, "failed to map I/O memory\n");
	retval = -EFAULT;
	goto err_iounmap_phyreg;
	}

	retval = mv_ehci_enable(ehci_mv);
	if (retval) {
	dev_err(&pdev->dev, "init phy error %d\n", retval);
	goto err_iounmap_capreg;
	}

	offset = readl(ehci_mv->cap_regs) & CAPLENGTH_MASK;
	ehci_mv->op_regs =
	(void __iomem *) ((unsigned long) ehci_mv->cap_regs + offset);

	hcd->rsrc_start = r->start;
	hcd->rsrc_len = r->end - r->start + 1;
	hcd->regs = ehci_mv->op_regs;

	hcd->irq = platform_get_irq(pdev, 0);
	if (!hcd->irq) {
	dev_err(&pdev->dev, "Cannot get irq.");
	retval = -ENODEV;
	goto err_disable_clk;
	}

	ehci = hcd_to_ehci(hcd);
	ehci->caps = (struct ehci_caps *) ehci_mv->cap_regs;
	ehci->regs = (struct ehci_regs *) ehci_mv->op_regs;
	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);

	ehci_mv->mode = pdata->mode;
	if (ehci_mv->mode == MV_USB_MODE_OTG) {
	#ifdef CONFIG_USB_OTG_UTILS
	ehci_mv->otg = otg_get_transceiver();
	if (!ehci_mv->otg) {
	dev_err(&pdev->dev,
	"unable to find transceiver\n");
	retval = -ENODEV;
	goto err_disable_clk;
	}

	retval = otg_set_host(ehci_mv->otg, &hcd->self);
	if (retval < 0) {
	dev_err(&pdev->dev,
	"unable to register with transceiver\n");
	retval = -ENODEV;
	goto err_put_transceiver;
	}
	/* otg will enable clock before use as host */
	mv_ehci_disable(ehci_mv);
	#else
	dev_info(&pdev->dev, "MV_USB_MODE_OTG "
	"must have CONFIG_USB_OTG_UTILS enabled\n");
	goto err_disable_clk;
	#endif
	} else {
	if (pdata->set_vbus)
	pdata->set_vbus(1);

	retval = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED);
	if (retval) {
	dev_err(&pdev->dev,
	"failed to add hcd with err %d\n", retval);
	goto err_set_vbus;
	}
	}

	if (pdata->private_init)
	pdata->private_init(ehci_mv->op_regs, ehci_mv->phy_regs);

	dev_info(&pdev->dev,
	"successful find EHCI device with regs 0x%p irq %d"
	" working in %s mode\n", hcd->regs, hcd->irq,
	ehci_mv->mode == MV_USB_MODE_OTG ? "OTG" : "Host");

	return 0;

	err_set_vbus:
	if (pdata->set_vbus)
	pdata->set_vbus(0);
	#ifdef CONFIG_USB_OTG_UTILS
	err_put_transceiver:
	if (ehci_mv->otg)
	otg_put_transceiver(ehci_mv->otg);
	#endif
	err_disable_clk:
	mv_ehci_disable(ehci_mv);
	err_iounmap_capreg:
	iounmap(ehci_mv->cap_regs);
	err_iounmap_phyreg:
	iounmap(ehci_mv->phy_regs);
	err_put_clk:
	for (clk_i--; clk_i >= 0; clk_i--)
	clk_put(ehci_mv->clk[clk_i]);
	platform_set_drvdata(pdev, NULL);
	kfree(ehci_mv);
	err_put_hcd:
	usb_put_hcd(hcd);

	return retval;
	}

	static int mv_ehci_remove(struct platform_device *pdev)
	{
	struct ehci_hcd_mv *ehci_mv = platform_get_drvdata(pdev);
	struct usb_hcd *hcd = ehci_mv->hcd;
	int clk_i;

	if (hcd->rh_registered)
	usb_remove_hcd(hcd);

	if (ehci_mv->otg) {
	otg_set_host(ehci_mv->otg, NULL);
	otg_put_transceiver(ehci_mv->otg);
	}

	if (ehci_mv->mode == MV_USB_MODE_HOST) {
	if (ehci_mv->pdata->set_vbus)
	ehci_mv->pdata->set_vbus(0);

	mv_ehci_disable(ehci_mv);
	}

	iounmap(ehci_mv->cap_regs);
	iounmap(ehci_mv->phy_regs);

	for (clk_i = 0; clk_i < ehci_mv->clknum; clk_i++)
	clk_put(ehci_mv->clk[clk_i]);

	platform_set_drvdata(pdev, NULL);

	kfree(ehci_mv);
	usb_put_hcd(hcd);

	return 0;
	}

	MODULE_ALIAS("mv-ehci");

	static const struct platform_device_id ehci_id_table[] = {
	{"pxa-u2oehci", PXA_U2OEHCI},
	{"pxa-sph", PXA_SPH},
	{"mmp3-hsic", MMP3_HSIC},
	{"mmp3-fsic", MMP3_FSIC},
	{},
	};

	static void mv_ehci_shutdown(struct platform_device *pdev)
	{
	struct ehci_hcd_mv *ehci_mv = platform_get_drvdata(pdev);
	struct usb_hcd *hcd = ehci_mv->hcd;

	if (!hcd->rh_registered)
	return;

	if (hcd->driver->shutdown)
	hcd->driver->shutdown(hcd);
	}

	static struct platform_driver ehci_mv_driver = {
	.probe = mv_ehci_probe,
	.remove = mv_ehci_remove,
	.shutdown = mv_ehci_shutdown,
	.driver = {
	.name = "mv-ehci",
	.bus = &platform_bus_type,
	},
	.id_table = ehci_id_table,
	};