/* * OHCI HCD (Host Controller Driver) for USB. * * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> * (C) Copyright 2002 Hewlett-Packard Company * (C) Copyright 2003-2005 MontaVista Software Inc. * * Bus Glue for PPC On-Chip OHCI driver * Tested on Freescale MPC5200 and IBM STB04xxx * * Modified by Dale Farnsworth <dale@farnsworth.org> from ohci-sa1111.c * * This file is licenced under the GPL. */#include <linux/platform_device.h>#include <linux/signal.h>/* configure so an HC device and id are always provided *//* always called with process context; sleeping is OK *//** * usb_hcd_ppc_soc_probe - initialize On-Chip HCDs * Context: !in_interrupt() * * Allocates basic resources for this USB host controller. * * Store this function in the HCD's struct pci_driver as probe(). */static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver,			  struct platform_device *pdev){	int retval;	struct usb_hcd *hcd;	struct ohci_hcd	*ohci;	struct resource *res;	int irq;	pr_debug("initializing PPC-SOC USB Controller\n");	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);	if (!res) {		pr_debug(__FILE__ ": no irq\n");		return -ENODEV;	}	irq = res->start;	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);	if (!res) {		pr_debug(__FILE__ ": no reg addr\n");		return -ENODEV;	}	hcd = usb_create_hcd(driver, &pdev->dev, "PPC-SOC USB");	if (!hcd)		return -ENOMEM;	hcd->rsrc_start = res->start;	hcd->rsrc_len = res->end - res->start + 1;	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {		pr_debug(__FILE__ ": request_mem_region failed\n");		retval = -EBUSY;		goto err1;	}	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);	if (!hcd->regs) {		pr_debug(__FILE__ ": ioremap failed\n");		retval = -ENOMEM;		goto err2;	}	ohci = hcd_to_ohci(hcd);	ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC;	ohci_hcd_init(ohci);	retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);	if (retval == 0)		return retval;	pr_debug("Removing PPC-SOC USB Controller\n");	iounmap(hcd->regs); err2:	release_mem_region(hcd->rsrc_start, hcd->rsrc_len); err1:	usb_put_hcd(hcd);	return retval;}/* may be called without controller electrically present *//* may be called with controller, bus, and devices active *//** * usb_hcd_ppc_soc_remove - shutdown processing for On-Chip HCDs * @pdev: USB Host Controller being removed * Context: !in_interrupt() * * Reverses the effect of usb_hcd_ppc_soc_probe(). * It is always called from a thread * context, normally "rmmod", "apmd", or something similar. * */static void usb_hcd_ppc_soc_remove(struct usb_hcd *hcd,		struct platform_device *pdev){	usb_remove_hcd(hcd);	pr_debug("stopping PPC-SOC USB Controller\n");	iounmap(hcd->regs);	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);	usb_put_hcd(hcd);}static int __devinitohci_ppc_soc_start(struct usb_hcd *hcd){	struct ohci_hcd	*ohci = hcd_to_ohci(hcd);	int		ret;	if ((ret = ohci_init(ohci)) < 0)		return ret;	if ((ret = ohci_run(ohci)) < 0) {		err("can't start %s", ohci_to_hcd(ohci)->self.bus_name);		ohci_stop(hcd);		return ret;	}	return 0;}static const struct hc_driver ohci_ppc_soc_hc_driver = {	.description =		hcd_name,	.hcd_priv_size =	sizeof(struct ohci_hcd),	/*	 * generic hardware linkage	 */	.irq =			ohci_irq,	.flags =		HCD_USB11 | HCD_MEMORY,	/*	 * basic lifecycle operations	 */	.start =		ohci_ppc_soc_start,	.stop =			ohci_stop,	.shutdown =		ohci_shutdown,	/*	 * managing i/o requests and associated device resources	 */	.urb_enqueue =		ohci_urb_enqueue,	.urb_dequeue =		ohci_urb_dequeue,	.endpoint_disable =	ohci_endpoint_disable,	/*	 * scheduling support	 */	.get_frame_number =	ohci_get_frame,	/*	 * root hub support	 */	.hub_status_data =	ohci_hub_status_data,	.hub_control =		ohci_hub_control,	.hub_irq_enable =	ohci_rhsc_enable,#ifdef	CONFIG_PM	.bus_suspend =		ohci_bus_suspend,	.bus_resume =		ohci_bus_resume,#endif	.start_port_reset =	ohci_start_port_reset,};static int ohci_hcd_ppc_soc_drv_probe(struct platform_device *pdev){	int ret;	if (usb_disabled())		return -ENODEV;	ret = usb_hcd_ppc_soc_probe(&ohci_ppc_soc_hc_driver, pdev);	return ret;}static int ohci_hcd_ppc_soc_drv_remove(struct platform_device *pdev){	struct usb_hcd *hcd = platform_get_drvdata(pdev);	usb_hcd_ppc_soc_remove(hcd, pdev);	return 0;}static struct platform_driver ohci_hcd_ppc_soc_driver = {	.probe		= ohci_hcd_ppc_soc_drv_probe,	.remove		= ohci_hcd_ppc_soc_drv_remove,	.shutdown	= usb_hcd_platform_shutdown,#ifdef	CONFIG_PM	/*.suspend	= ohci_hcd_ppc_soc_drv_suspend,*/	/*.resume	= ohci_hcd_ppc_soc_drv_resume,*/#endif	.driver		= {		.name	= "ppc-soc-ohci",		.owner	= THIS_MODULE,	},};