[deliverable/linux.git] / drivers / usb / host / ehci-fsl.c

/*
 * Copyright (c) 2005 MontaVista Software
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * Ported to 834x by Randy Vinson <rvinson@mvista.com> using code provided
 * by Hunter Wu.
 */

#include <linux/platform_device.h>
#include <linux/fsl_devices.h>

#include "ehci-fsl.h"

/* FIXME: Power Management is un-ported so temporarily disable it */
#undef CONFIG_PM


/* configure so an HC device and id are always provided */
/* always called with process context; sleeping is OK */

/**
 * usb_hcd_fsl_probe - initialize FSL-based HCDs
 * @drvier: Driver to be used for this HCD
 * @pdev: USB Host Controller being probed
 * Context: !in_interrupt()
 *
 * Allocates basic resources for this USB host controller.
 *
 */
static int usb_hcd_fsl_probe(const struct hc_driver *driver,
			     struct platform_device *pdev)
{
	struct fsl_usb2_platform_data *pdata;
	struct usb_hcd *hcd;
	struct resource *res;
	int irq;
	int retval;
	unsigned int temp;

	pr_debug("initializing FSL-SOC USB Controller\n");

	/* Need platform data for setup */
	pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data;
	if (!pdata) {
		dev_err(&pdev->dev,
			"No platform data for %s.\n", dev_name(&pdev->dev));
		return -ENODEV;
	}

	/*
	 * This is a host mode driver, verify that we're supposed to be
	 * in host mode.
	 */
	if (!((pdata->operating_mode == FSL_USB2_DR_HOST) ||
	      (pdata->operating_mode == FSL_USB2_MPH_HOST) ||
	      (pdata->operating_mode == FSL_USB2_DR_OTG))) {
		dev_err(&pdev->dev,
			"Non Host Mode configured for %s. Wrong driver linked.\n",
			dev_name(&pdev->dev));
		return -ENODEV;
	}

	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	if (!res) {
		dev_err(&pdev->dev,
			"Found HC with no IRQ. Check %s setup!\n",
			dev_name(&pdev->dev));
		return -ENODEV;
	}
	irq = res->start;

	hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
	if (!hcd) {
		retval = -ENOMEM;
		goto err1;
	}

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev,
			"Found HC with no register addr. Check %s setup!\n",
			dev_name(&pdev->dev));
		retval = -ENODEV;
		goto err2;
	}
	hcd->rsrc_start = res->start;
	hcd->rsrc_len = res->end - res->start + 1;
	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
				driver->description)) {
		dev_dbg(&pdev->dev, "controller already in use\n");
		retval = -EBUSY;
		goto err2;
	}
	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);

	if (hcd->regs == NULL) {
		dev_dbg(&pdev->dev, "error mapping memory\n");
		retval = -EFAULT;
		goto err3;
	}

	/* Enable USB controller */
	temp = in_be32(hcd->regs + 0x500);
	out_be32(hcd->regs + 0x500, temp | 0x4);

	/* Set to Host mode */
	temp = in_le32(hcd->regs + 0x1a8);
	out_le32(hcd->regs + 0x1a8, temp | 0x3);

	retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
	if (retval != 0)
		goto err4;
	return retval;

      err4:
	iounmap(hcd->regs);
      err3:
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
      err2:
	usb_put_hcd(hcd);
      err1:
	dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval);
	return retval;
}

/* may be called without controller electrically present */
/* may be called with controller, bus, and devices active */

/**
 * usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs
 * @dev: USB Host Controller being removed
 * Context: !in_interrupt()
 *
 * Reverses the effect of usb_hcd_fsl_probe().
 *
 */
static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
			       struct platform_device *pdev)
{
	usb_remove_hcd(hcd);
	iounmap(hcd->regs);
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);
}

static void mpc83xx_setup_phy(struct ehci_hcd *ehci,
			      enum fsl_usb2_phy_modes phy_mode,
			      unsigned int port_offset)
{
	u32 portsc = 0;
	switch (phy_mode) {
	case FSL_USB2_PHY_ULPI:
		portsc |= PORT_PTS_ULPI;
		break;
	case FSL_USB2_PHY_SERIAL:
		portsc |= PORT_PTS_SERIAL;
		break;
	case FSL_USB2_PHY_UTMI_WIDE:
		portsc |= PORT_PTS_PTW;
		/* fall through */
	case FSL_USB2_PHY_UTMI:
		portsc |= PORT_PTS_UTMI;
		break;
	case FSL_USB2_PHY_NONE:
		break;
	}
	ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]);
}

static void mpc83xx_usb_setup(struct usb_hcd *hcd)
{
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
	struct fsl_usb2_platform_data *pdata;
	void __iomem *non_ehci = hcd->regs;
	u32 temp;

	pdata =
	    (struct fsl_usb2_platform_data *)hcd->self.controller->
	    platform_data;
	/* Enable PHY interface in the control reg. */
	temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);
	out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | 0x00000004);
	out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b);

#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
	/*
	 * Turn on cache snooping hardware, since some PowerPC platforms
	 * wholly rely on hardware to deal with cache coherent
	 */

	/* Setup Snooping for all the 4GB space */
	/* SNOOP1 starts from 0x0, size 2G */
	out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB);
	/* SNOOP2 starts from 0x80000000, size 2G */
	out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB);
#endif

	if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||
			(pdata->operating_mode == FSL_USB2_DR_OTG))
		mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);

	if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
		unsigned int chip, rev, svr;

		svr = mfspr(SPRN_SVR);
		chip = svr >> 16;
		rev = (svr >> 4) & 0xf;

		/* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */
		if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055))
			ehci->has_fsl_port_bug = 1;

		if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
			mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
		if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
			mpc83xx_setup_phy(ehci, pdata->phy_mode, 1);
	}

	/* put controller in host mode. */
	ehci_writel(ehci, 0x00000003, non_ehci + FSL_SOC_USB_USBMODE);
#ifdef CONFIG_PPC_85xx
	out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008);
	out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080);
#else
	out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c);
	out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040);
#endif
	out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001);
}

/* called after powerup, by probe or system-pm "wakeup" */
static int ehci_fsl_reinit(struct ehci_hcd *ehci)
{
	mpc83xx_usb_setup(ehci_to_hcd(ehci));
	ehci_port_power(ehci, 0);

	return 0;
}

/* called during probe() after chip reset completes */
static int ehci_fsl_setup(struct usb_hcd *hcd)
{
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
	int retval;

	/* EHCI registers start at offset 0x100 */
	ehci->caps = hcd->regs + 0x100;
	ehci->regs = hcd->regs + 0x100 +
	    HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
	dbg_hcs_params(ehci, "reset");
	dbg_hcc_params(ehci, "reset");

	/* cache this readonly data; minimize chip reads */
	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);

	retval = ehci_halt(ehci);
	if (retval)
		return retval;

	/* data structure init */
	retval = ehci_init(hcd);
	if (retval)
		return retval;

	hcd->has_tt = 1;

	ehci->sbrn = 0x20;

	ehci_reset(ehci);

	retval = ehci_fsl_reinit(ehci);
	return retval;
}

static const struct hc_driver ehci_fsl_hc_driver = {
	.description = hcd_name,
	.product_desc = "Freescale On-Chip EHCI Host Controller",
	.hcd_priv_size = sizeof(struct ehci_hcd),

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

	/*
	 * basic lifecycle operations
	 */
	.reset = ehci_fsl_setup,
	.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,

	/*
	 * 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,
	.relinquish_port = ehci_relinquish_port,
	.port_handed_over = ehci_port_handed_over,

	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
};

static int ehci_fsl_drv_probe(struct platform_device *pdev)
{
	if (usb_disabled())
		return -ENODEV;

	/* FIXME we only want one one probe() not two */
	return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
}

static int ehci_fsl_drv_remove(struct platform_device *pdev)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);

	/* FIXME we only want one one remove() not two */
	usb_hcd_fsl_remove(hcd, pdev);
	return 0;
}

MODULE_ALIAS("platform:fsl-ehci");

static struct platform_driver ehci_fsl_driver = {
	.probe = ehci_fsl_drv_probe,
	.remove = ehci_fsl_drv_remove,
	.shutdown = usb_hcd_platform_shutdown,
	.driver = {
		   .name = "fsl-ehci",
	},
};
Commit	Line	Data
80cb9aee	1	/*
80cb9aee RV	2	* Copyright (c) 2005 MontaVista Software
	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms of the GNU General Public License as published by the
	6	* Free Software Foundation; either version 2 of the License, or (at your
	7	* option) any later version.
	8	*
	9	* This program is distributed in the hope that it will be useful, but
	10	* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
	11	* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	12	* for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software Foundation,
	16	* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	17	*
	18	* Ported to 834x by Randy Vinson <rvinson@mvista.com> using code provided
	19	* by Hunter Wu.
	20	*/
	21
	22	#include <linux/platform_device.h>
	23	#include <linux/fsl_devices.h>
	24
	25	#include "ehci-fsl.h"
	26
dc0d5c1e	27	/* FIXME: Power Management is un-ported so temporarily disable it */
80cb9aee RV	28	#undef CONFIG_PM
80cb9aee RV	29
80cb9aee RV	30
	31	/* configure so an HC device and id are always provided */
	32	/* always called with process context; sleeping is OK */
	33
	34	/**
	35	* usb_hcd_fsl_probe - initialize FSL-based HCDs
	36	* @drvier: Driver to be used for this HCD
	37	* @pdev: USB Host Controller being probed
	38	* Context: !in_interrupt()
	39	*
	40	* Allocates basic resources for this USB host controller.
	41	*
	42	*/
dad3843f AV	43	static int usb_hcd_fsl_probe(const struct hc_driver *driver,
dad3843f AV	44	struct platform_device *pdev)
80cb9aee RV	45	{
	46	struct fsl_usb2_platform_data *pdata;
	47	struct usb_hcd *hcd;
	48	struct resource *res;
	49	int irq;
	50	int retval;
	51	unsigned int temp;
	52
	53	pr_debug("initializing FSL-SOC USB Controller\n");
	54
	55	/* Need platform data for setup */
	56	pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data;
	57	if (!pdata) {
	58	dev_err(&pdev->dev,
7071a3ce	59	"No platform data for %s.\n", dev_name(&pdev->dev));
80cb9aee RV	60	return -ENODEV;
	61	}
	62
	63	/*
	64	* This is a host mode driver, verify that we're supposed to be
	65	* in host mode.
	66	*/
	67	if (!((pdata->operating_mode == FSL_USB2_DR_HOST) \|\|
ba02978a LY	68	(pdata->operating_mode == FSL_USB2_MPH_HOST) \|\|
ba02978a LY	69	(pdata->operating_mode == FSL_USB2_DR_OTG))) {
80cb9aee RV	70	dev_err(&pdev->dev,
80cb9aee RV	71	"Non Host Mode configured for %s. Wrong driver linked.\n",
7071a3ce	72	dev_name(&pdev->dev));
80cb9aee RV	73	return -ENODEV;
	74	}
	75
	76	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	77	if (!res) {
	78	dev_err(&pdev->dev,
	79	"Found HC with no IRQ. Check %s setup!\n",
7071a3ce	80	dev_name(&pdev->dev));
80cb9aee RV	81	return -ENODEV;
	82	}
	83	irq = res->start;
	84
7071a3ce	85	hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
80cb9aee RV	86	if (!hcd) {
	87	retval = -ENOMEM;
	88	goto err1;
	89	}
	90
	91	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	92	if (!res) {
	93	dev_err(&pdev->dev,
	94	"Found HC with no register addr. Check %s setup!\n",
7071a3ce	95	dev_name(&pdev->dev));
80cb9aee RV	96	retval = -ENODEV;
	97	goto err2;
	98	}
	99	hcd->rsrc_start = res->start;
	100	hcd->rsrc_len = res->end - res->start + 1;
	101	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
	102	driver->description)) {
	103	dev_dbg(&pdev->dev, "controller already in use\n");
	104	retval = -EBUSY;
	105	goto err2;
	106	}
	107	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	108
	109	if (hcd->regs == NULL) {
	110	dev_dbg(&pdev->dev, "error mapping memory\n");
	111	retval = -EFAULT;
	112	goto err3;
	113	}
	114
	115	/* Enable USB controller */
	116	temp = in_be32(hcd->regs + 0x500);
	117	out_be32(hcd->regs + 0x500, temp \| 0x4);
	118
	119	/* Set to Host mode */
	120	temp = in_le32(hcd->regs + 0x1a8);
	121	out_le32(hcd->regs + 0x1a8, temp \| 0x3);
	122
442258e2	123	retval = usb_add_hcd(hcd, irq, IRQF_DISABLED \| IRQF_SHARED);
80cb9aee RV	124	if (retval != 0)
	125	goto err4;
	126	return retval;
	127
	128	err4:
	129	iounmap(hcd->regs);
	130	err3:
	131	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	132	err2:
	133	usb_put_hcd(hcd);
	134	err1:
7071a3ce	135	dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval);
80cb9aee RV	136	return retval;
	137	}
	138
	139	/* may be called without controller electrically present */
	140	/* may be called with controller, bus, and devices active */
	141
	142	/**
	143	* usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs
	144	* @dev: USB Host Controller being removed
	145	* Context: !in_interrupt()
	146	*
	147	* Reverses the effect of usb_hcd_fsl_probe().
	148	*
	149	*/
dad3843f AV	150	static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
dad3843f AV	151	struct platform_device *pdev)
80cb9aee RV	152	{
	153	usb_remove_hcd(hcd);
	154	iounmap(hcd->regs);
	155	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	156	usb_put_hcd(hcd);
	157	}
	158
	159	static void mpc83xx_setup_phy(struct ehci_hcd *ehci,
	160	enum fsl_usb2_phy_modes phy_mode,
	161	unsigned int port_offset)
	162	{
499003e8	163	u32 portsc = 0;
80cb9aee RV	164	switch (phy_mode) {
	165	case FSL_USB2_PHY_ULPI:
	166	portsc \|= PORT_PTS_ULPI;
	167	break;
	168	case FSL_USB2_PHY_SERIAL:
	169	portsc \|= PORT_PTS_SERIAL;
	170	break;
	171	case FSL_USB2_PHY_UTMI_WIDE:
	172	portsc \|= PORT_PTS_PTW;
	173	/* fall through */
	174	case FSL_USB2_PHY_UTMI:
	175	portsc \|= PORT_PTS_UTMI;
	176	break;
	177	case FSL_USB2_PHY_NONE:
	178	break;
	179	}
083522d7	180	ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]);
80cb9aee RV	181	}
	182
	183	static void mpc83xx_usb_setup(struct usb_hcd *hcd)
	184	{
	185	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
	186	struct fsl_usb2_platform_data *pdata;
	187	void __iomem *non_ehci = hcd->regs;
ba02978a	188	u32 temp;
80cb9aee RV	189
	190	pdata =
	191	(struct fsl_usb2_platform_data *)hcd->self.controller->
	192	platform_data;
	193	/* Enable PHY interface in the control reg. */
ba02978a LY	194	temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);
ba02978a LY	195	out_be32(non_ehci + FSL_SOC_USB_CTRL, temp \| 0x00000004);
80cb9aee RV	196	out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b);
80cb9aee RV	197
40acc095 LY	198	#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
	199	/*
	200	* Turn on cache snooping hardware, since some PowerPC platforms
	201	* wholly rely on hardware to deal with cache coherent
	202	*/
	203
	204	/* Setup Snooping for all the 4GB space */
	205	/* SNOOP1 starts from 0x0, size 2G */
	206	out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 \| SNOOP_SIZE_2GB);
	207	/* SNOOP2 starts from 0x80000000, size 2G */
	208	out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 \| SNOOP_SIZE_2GB);
	209	#endif
	210
ba02978a LY	211	if ((pdata->operating_mode == FSL_USB2_DR_HOST) \|\|
ba02978a LY	212	(pdata->operating_mode == FSL_USB2_DR_OTG))
80cb9aee RV	213	mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
	214
	215	if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
8cd42e97 KG	216	unsigned int chip, rev, svr;
	217
	218	svr = mfspr(SPRN_SVR);
	219	chip = svr >> 16;
	220	rev = (svr >> 4) & 0xf;
	221
	222	/* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */
	223	if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055))
	224	ehci->has_fsl_port_bug = 1;
	225
80cb9aee RV	226	if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
	227	mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
	228	if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
	229	mpc83xx_setup_phy(ehci, pdata->phy_mode, 1);
	230	}
	231
	232	/* put controller in host mode. */
083522d7	233	ehci_writel(ehci, 0x00000003, non_ehci + FSL_SOC_USB_USBMODE);
4f534258 SS	234	#ifdef CONFIG_PPC_85xx
	235	out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008);
	236	out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080);
	237	#else
80cb9aee RV	238	out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c);
80cb9aee RV	239	out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040);
4f534258	240	#endif
80cb9aee RV	241	out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001);
	242	}
	243
	244	/* called after powerup, by probe or system-pm "wakeup" */
	245	static int ehci_fsl_reinit(struct ehci_hcd *ehci)
	246	{
	247	mpc83xx_usb_setup(ehci_to_hcd(ehci));
	248	ehci_port_power(ehci, 0);
	249
	250	return 0;
	251	}
	252
	253	/* called during probe() after chip reset completes */
	254	static int ehci_fsl_setup(struct usb_hcd *hcd)
	255	{
	256	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
	257	int retval;
	258
	259	/* EHCI registers start at offset 0x100 */
	260	ehci->caps = hcd->regs + 0x100;
	261	ehci->regs = hcd->regs + 0x100 +
083522d7	262	HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
80cb9aee RV	263	dbg_hcs_params(ehci, "reset");
	264	dbg_hcc_params(ehci, "reset");
	265
	266	/* cache this readonly data; minimize chip reads */
083522d7	267	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
80cb9aee RV	268
	269	retval = ehci_halt(ehci);
	270	if (retval)
	271	return retval;
	272
	273	/* data structure init */
	274	retval = ehci_init(hcd);
	275	if (retval)
	276	return retval;
	277
a8e51775	278	hcd->has_tt = 1;
80cb9aee RV	279
	280	ehci->sbrn = 0x20;
	281
	282	ehci_reset(ehci);
	283
	284	retval = ehci_fsl_reinit(ehci);
	285	return retval;
	286	}
	287
	288	static const struct hc_driver ehci_fsl_hc_driver = {
	289	.description = hcd_name,
	290	.product_desc = "Freescale On-Chip EHCI Host Controller",
	291	.hcd_priv_size = sizeof(struct ehci_hcd),
	292
	293	/*
	294	* generic hardware linkage
	295	*/
	296	.irq = ehci_irq,
	297	.flags = HCD_USB2,
	298
	299	/*
	300	* basic lifecycle operations
	301	*/
	302	.reset = ehci_fsl_setup,
	303	.start = ehci_run,
80cb9aee	304	.stop = ehci_stop,
64a21d02	305	.shutdown = ehci_shutdown,
80cb9aee RV	306
	307	/*
	308	* managing i/o requests and associated device resources
	309	*/
	310	.urb_enqueue = ehci_urb_enqueue,
	311	.urb_dequeue = ehci_urb_dequeue,
	312	.endpoint_disable = ehci_endpoint_disable,
b18ffd49	313	.endpoint_reset = ehci_endpoint_reset,
80cb9aee RV	314
	315	/*
	316	* scheduling support
	317	*/
	318	.get_frame_number = ehci_get_frame,
	319
	320	/*
	321	* root hub support
	322	*/
	323	.hub_status_data = ehci_hub_status_data,
	324	.hub_control = ehci_hub_control,
	325	.bus_suspend = ehci_bus_suspend,
	326	.bus_resume = ehci_bus_resume,
90da096e	327	.relinquish_port = ehci_relinquish_port,
3a31155c	328	.port_handed_over = ehci_port_handed_over,
914b7012 AS	329
914b7012 AS	330	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
80cb9aee RV	331	};
	332
	333	static int ehci_fsl_drv_probe(struct platform_device *pdev)
	334	{
	335	if (usb_disabled())
	336	return -ENODEV;
	337
135db048	338	/* FIXME we only want one one probe() not two */
80cb9aee RV	339	return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
	340	}
	341
	342	static int ehci_fsl_drv_remove(struct platform_device *pdev)
	343	{
	344	struct usb_hcd *hcd = platform_get_drvdata(pdev);
	345
135db048	346	/* FIXME we only want one one remove() not two */
80cb9aee	347	usb_hcd_fsl_remove(hcd, pdev);
80cb9aee RV	348	return 0;
	349	}
	350
135db048	351	MODULE_ALIAS("platform:fsl-ehci");
80cb9aee	352
01cced25	353	static struct platform_driver ehci_fsl_driver = {
80cb9aee RV	354	.probe = ehci_fsl_drv_probe,
80cb9aee RV	355	.remove = ehci_fsl_drv_remove,
64a21d02	356	.shutdown = usb_hcd_platform_shutdown,
80cb9aee	357	.driver = {
01cced25	358	.name = "fsl-ehci",
135db048	359	},
80cb9aee	360	};