USB: OHCI support for PNX8550

#include "ohci-au1xxx.c"

#endif

#ifdef CONFIG_PNX8550

#include "ohci-pnx8550.c"

#endif

#ifdef CONFIG_USB_OHCI_HCD_PPC_SOC

#include "ohci-ppc-soc.c"

#endif

/*

 * 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 2005 Embedded Alley Solutions, Inc.

 *

 * Bus Glue for PNX8550

 *

 * Written by Christopher Hoover <ch@hpl.hp.com>

 * Based on fragments of previous driver by Russell King et al.

 *

 * Modified for LH7A404 from ohci-sa1111.c

 *  by Durgesh Pattamatta <pattamattad@sharpsec.com>

 *

 * Modified for PNX8550 from ohci-sa1111.c and sa-omap.c

 *  by Vitaly Wool <vitalywool@gmail.com>

 *

 * This file is licenced under the GPL.

 */

#include <linux/device.h>

#include <linux/platform_device.h>

#include <asm/mach-pnx8550/usb.h>

#include <asm/mach-pnx8550/int.h>

#include <asm/mach-pnx8550/pci.h>

#ifndef CONFIG_PNX8550

#error "This file is PNX8550 bus glue.  CONFIG_PNX8550 must be defined."

#endif

extern int usb_disabled(void);

/*-------------------------------------------------------------------------*/

static void pnx8550_start_hc(struct platform_device *dev)

{

	/*

	 * Set register CLK48CTL to enable and 48MHz

	 */

	outl(0x00000003, PCI_BASE | 0x0004770c);

	/*

	 * Set register CLK12CTL to enable and 48MHz

	 */

	outl(0x00000003, PCI_BASE | 0x00047710);

	udelay(100);

}

static void pnx8550_stop_hc(struct platform_device *dev)

{

	udelay(10);

}

/*-------------------------------------------------------------------------*/

/* configure so an HC device and id are always provided */

/* always called with process context; sleeping is OK */

/**

 * usb_hcd_pnx8550_probe - initialize pnx8550-based HCDs

 * Context: !in_interrupt()

 *

 * Allocates basic resources for this USB host controller, and

 * then invokes the start() method for the HCD associated with it

 * through the hotplug entry's driver_data.

 *

 */

int usb_hcd_pnx8550_probe (const struct hc_driver *driver,

			  struct platform_device *dev)

{

	int retval;

	struct usb_hcd *hcd;

	if (dev->resource[0].flags != IORESOURCE_MEM ||

			dev->resource[1].flags != IORESOURCE_IRQ) {

		dev_err (&dev->dev,"invalid resource type\n");

		return -ENOMEM;

	}

	hcd = usb_create_hcd (driver, &dev->dev, "pnx8550");

	if (!hcd)

		return -ENOMEM;

	hcd->rsrc_start = dev->resource[0].start;

	hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1;

	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {

		dev_err(&dev->dev, "request_mem_region [0x%08llx, 0x%08llx] "

				"failed\n", hcd->rsrc_start, hcd->rsrc_len);

		retval = -EBUSY;

		goto err1;

	}

	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);

	if (!hcd->regs) {

		dev_err(&dev->dev, "ioremap [[0x%08llx, 0x%08llx] failed\n",

				hcd->rsrc_start, hcd->rsrc_len);

		retval = -ENOMEM;

		goto err2;

	}

	pnx8550_start_hc(dev);

	ohci_hcd_init(hcd_to_ohci(hcd));

	retval = usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT);

	if (retval == 0)

		return retval;

	pnx8550_stop_hc(dev);

	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_pnx8550_remove - shutdown processing for pnx8550-based HCDs

 * @dev: USB Host Controller being removed

 * Context: !in_interrupt()

 *

 * Reverses the effect of usb_hcd_pnx8550_probe(), first invoking

 * the HCD's stop() method.  It is always called from a thread

 * context, normally "rmmod", "apmd", or something similar.

 *

 */

void usb_hcd_pnx8550_remove (struct usb_hcd *hcd, struct platform_device *dev)

{

	usb_remove_hcd(hcd);

	pnx8550_stop_hc(dev);

	iounmap(hcd->regs);

	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);

	usb_put_hcd(hcd);

}

/*-------------------------------------------------------------------------*/

static int __devinit

ohci_pnx8550_start (struct usb_hcd *hcd)

{

	struct ohci_hcd	*ohci = hcd_to_ohci (hcd);

	int		ret;

	ohci_dbg (ohci, "ohci_pnx8550_start, ohci:%p", ohci);

	if ((ret = ohci_init(ohci)) < 0)

		return ret;

	if ((ret = ohci_run (ohci)) < 0) {

		err ("can't start %s", hcd->self.bus_name);

		ohci_stop (hcd);

		return ret;

	}

	return 0;

}

/*-------------------------------------------------------------------------*/

static const struct hc_driver ohci_pnx8550_hc_driver = {

	.description =		hcd_name,

	.product_desc =		"PNX8550 OHCI",

	.hcd_priv_size =	sizeof(struct ohci_hcd),

	/*

	 * generic hardware linkage

	 */

	.irq =			ohci_irq,

	.flags =		HCD_USB11 | HCD_MEMORY,

	/*

	 * basic lifecycle operations

	 */

	.start =		ohci_pnx8550_start,

	.stop =			ohci_stop,

	/*

	 * 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_pnx8550_drv_probe(struct platform_device *pdev)

{

	int ret;

	if (usb_disabled())

		return -ENODEV;

	ret = usb_hcd_pnx8550_probe(&ohci_pnx8550_hc_driver, pdev);

	return ret;

}

static int ohci_hcd_pnx8550_drv_remove(struct platform_device *pdev)

{

	struct usb_hcd *hcd = platform_get_drvdata(pdev);

	usb_hcd_pnx8550_remove(hcd, pdev);

	return 0;

}

MODULE_ALIAS("pnx8550-ohci");

static struct platform_driver ohci_hcd_pnx8550_driver = {

	.driver = {

		.name		= "pnx8550-ohci",

	},

	.probe		= ohci_hcd_pnx8550_drv_probe,

	.remove		= ohci_hcd_pnx8550_drv_remove,

};

static int __init ohci_hcd_pnx8550_init (void)

{

	pr_debug (DRIVER_INFO " (pnx8550)");

	pr_debug ("block sizes: ed %d td %d\n",

		sizeof (struct ed), sizeof (struct td));

	return platform_driver_register(&ohci_hcd_pnx8550_driver);

}

static void __exit ohci_hcd_pnx8550_cleanup (void)

{

	platform_driver_unregister(&ohci_hcd_pnx8550_driver);

}

module_init (ohci_hcd_pnx8550_init);

module_exit (ohci_hcd_pnx8550_cleanup);