/* * (C) Copyright David Brownell 2000-2002 * 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 Managment is un-ported so temporarily disable it */#undef CONFIG_PM/* PCI-based HCs are common, but plenty of non-PCI HCs are used too *//* 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. * */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", pdev->dev.bus_id);		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))) {		dev_err(&pdev->dev,			"Non Host Mode configured for %s. Wrong driver linked.\n",			pdev->dev.bus_id);		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",			pdev->dev.bus_id);		return -ENODEV;	}	irq = res->start;	hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id);	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",			pdev->dev.bus_id);		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_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", pdev->dev.bus_id, 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(). * */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;	pdata =	    (struct fsl_usb2_platform_data *)hcd->self.controller->	    platform_data;	/* Enable PHY interface in the control reg. */	out_be32(non_ehci + FSL_SOC_USB_CTRL, 0x00000004);	out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b);	if (pdata->operating_mode == FSL_USB2_DR_HOST)		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);	out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c);	out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040);	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;	ehci->is_tdi_rh_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,#ifdef	CONFIG_PM	.suspend = ehci_bus_suspend,	.resume = ehci_bus_resume,#endif	.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,	/*	 * 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 ehci_fsl_drv_probe(struct platform_device *pdev){	if (usb_disabled())		return -ENODEV;	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);	usb_hcd_fsl_remove(hcd, pdev);	return 0;}MODULE_ALIAS("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",		   },};