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Commit 23106343 authored by Jayachandran C's avatar Jayachandran C Committed by Greg Kroah-Hartman
Browse files

usb: OHCI/EHCI support for Netlogic XLS processor. 



Add supprt for on-chip USB controller for Netlogic XLS MIPS64
SoC processor family.
Changes are:
 - update ehci-hcd.c and ohci-hcd.c to add XLS hcds
 - add ehci-xls.c: EHCI support for Netlogic XLS.
 - add ohci-xls.c: OHCI support for Netlogic XLS.

Signed-off-by: default avatarJayachandran C <jayachandranc@netlogicmicro.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 3abd7f68

drivers/usb/host/ehci-hcd.c

+5 −0
Original line number Diff line number Diff line
@@ -1296,6 +1296,11 @@ MODULE_LICENSE ("GPL"); 
#define PLATFORM_DRIVER		ehci_pxa168_driver

#endif



#ifdef CONFIG_NLM_XLR

#include "ehci-xls.c"

#define PLATFORM_DRIVER		ehci_xls_driver

#endif



#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \

    !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \

    !defined(XILINX_OF_PLATFORM_DRIVER)

drivers/usb/host/ehci-xls.c

0 → 100644
+161 −0
Original line number Diff line number Diff line 
/*

 * EHCI HCD for Netlogic XLS processors.

 *

 * (C) Copyright 2011 Netlogic Microsystems Inc.

 *

 *  Based on various ehci-*.c drivers

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file COPYING in the main directory of this archive for

 * more details.

 */



#include <linux/platform_device.h>



static int ehci_xls_setup(struct usb_hcd *hcd)

{

	int	retval;

	struct ehci_hcd *ehci = hcd_to_ehci(hcd);



	ehci->caps = hcd->regs;

	ehci->regs = hcd->regs +

		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_reset(ehci);



	return retval;

}



int ehci_xls_probe_internal(const struct hc_driver *driver,

	struct platform_device *pdev)

{

	struct usb_hcd  *hcd;

	struct resource *res;

	int retval, irq;



	/* Get our IRQ from an earlier registered Platform Resource */

	irq = platform_get_irq(pdev, 0);

	if (irq < 0) {

		dev_err(&pdev->dev, "Found HC with no IRQ. Check %s setup!\n",

				dev_name(&pdev->dev));

		return -ENODEV;

	}



	/* Get our Memory Handle */

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!res) {

		dev_err(&pdev->dev, "Error: MMIO Handle %s setup!\n",

				dev_name(&pdev->dev));

		return -ENODEV;

	}

	hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));

	if (!hcd) {

		retval = -ENOMEM;

		goto err1;

	}



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



	if (hcd->regs == NULL) {

		dev_dbg(&pdev->dev, "error mapping memory\n");

		retval = -EFAULT;

		goto err3;

	}



	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", dev_name(&pdev->dev),

			retval);

	return retval;

}



static struct hc_driver ehci_xls_hc_driver = {

	.description	= hcd_name,

	.product_desc	= "XLS EHCI Host Controller",

	.hcd_priv_size	= sizeof(struct ehci_hcd),

	.irq		= ehci_irq,

	.flags		= HCD_USB2 | HCD_MEMORY,

	.reset		= ehci_xls_setup,

	.start		= ehci_run,

	.stop		= ehci_stop,

	.shutdown	= ehci_shutdown,



	.urb_enqueue	= ehci_urb_enqueue,

	.urb_dequeue	= ehci_urb_dequeue,

	.endpoint_disable = ehci_endpoint_disable,

	.endpoint_reset	= ehci_endpoint_reset,



	.get_frame_number = ehci_get_frame,



	.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_xls_probe(struct platform_device *pdev)

{

	if (usb_disabled())

		return -ENODEV;



	return ehci_xls_probe_internal(&ehci_xls_hc_driver, pdev);

}



static int ehci_xls_remove(struct platform_device *pdev)

{

	struct usb_hcd *hcd = platform_get_drvdata(pdev);



	usb_remove_hcd(hcd);

	iounmap(hcd->regs);

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

	usb_put_hcd(hcd);

	return 0;

}



MODULE_ALIAS("ehci-xls");



static struct platform_driver ehci_xls_driver = {

	.probe		= ehci_xls_probe,

	.remove		= ehci_xls_remove,

	.shutdown	= usb_hcd_platform_shutdown,

	.driver		= {

		.name = "ehci-xls",

	},

};

drivers/usb/host/ohci-hcd.c

+5 −0
Original line number Diff line number Diff line
@@ -1114,6 +1114,11 @@ MODULE_LICENSE ("GPL"); 
#define PLATFORM_DRIVER		ohci_hcd_ath79_driver

#endif



#ifdef CONFIG_NLM_XLR

#include "ohci-xls.c"

#define PLATFORM_DRIVER		ohci_xls_driver

#endif



#if	!defined(PCI_DRIVER) &&		\

	!defined(PLATFORM_DRIVER) &&	\

	!defined(OMAP1_PLATFORM_DRIVER) &&	\

drivers/usb/host/ohci-xls.c

0 → 100644
+151 −0
Original line number Diff line number Diff line 
/*

 * OHCI HCD for Netlogic XLS processors.

 *

 * (C) Copyright 2011 Netlogic Microsystems Inc.

 *

 *  Based on ohci-au1xxx.c, and other Linux OHCI drivers.

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file COPYING in the main directory of this archive for

 * more details.

 */



#include <linux/platform_device.h>

#include <linux/signal.h>



static int ohci_xls_probe_internal(const struct hc_driver *driver,

			struct platform_device *dev)

{

	struct resource *res;

	struct usb_hcd *hcd;

	int retval, irq;



	/* Get our IRQ from an earlier registered Platform Resource */

	irq = platform_get_irq(dev, 0);

	if (irq < 0) {

		dev_err(&dev->dev, "Found HC with no IRQ\n");

		return -ENODEV;

	}



	/* Get our Memory Handle */

	res = platform_get_resource(dev, IORESOURCE_MEM, 0);

	if (!res) {

		dev_err(&dev->dev, "MMIO Handle incorrect!\n");

		return -ENODEV;

	}



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

	if (!hcd) {

		retval = -ENOMEM;

		goto err1;

	}

	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(&dev->dev, "Controller already in use\n");

		retval = -EBUSY;

		goto err2;

	}



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

	if (hcd->regs == NULL) {

		dev_dbg(&dev->dev, "error mapping memory\n");

		retval = -EFAULT;

		goto err3;

	}



	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(&dev->dev, "init fail, %d\n", retval);

	return retval;

}



static int ohci_xls_reset(struct usb_hcd *hcd)

{

	struct ohci_hcd *ohci = hcd_to_ohci(hcd);



	ohci_hcd_init(ohci);

	return ohci_init(ohci);

}



static int __devinit ohci_xls_start(struct usb_hcd *hcd)

{

	struct ohci_hcd *ohci;

	int ret;



	ohci = hcd_to_ohci(hcd);

	ret = ohci_run(ohci);

	if (ret < 0) {

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

		ohci_stop(hcd);

		return ret;

	}

	return 0;

}



static struct hc_driver ohci_xls_hc_driver = {

	.description	= hcd_name,

	.product_desc	= "XLS OHCI Host Controller",

	.hcd_priv_size	= sizeof(struct ohci_hcd),

	.irq		= ohci_irq,

	.flags		= HCD_MEMORY | HCD_USB11,

	.reset		= ohci_xls_reset,

	.start		= ohci_xls_start,

	.stop		= ohci_stop,

	.shutdown	= ohci_shutdown,

	.urb_enqueue	= ohci_urb_enqueue,

	.urb_dequeue	= ohci_urb_dequeue,

	.endpoint_disable = ohci_endpoint_disable,

	.get_frame_number = ohci_get_frame,

	.hub_status_data = ohci_hub_status_data,

	.hub_control	= ohci_hub_control,

#ifdef CONFIG_PM

	.bus_suspend	= ohci_bus_suspend,

	.bus_resume	= ohci_bus_resume,

#endif

	.start_port_reset = ohci_start_port_reset,

};



static int ohci_xls_probe(struct platform_device *dev)

{

	int ret;



	pr_debug("In ohci_xls_probe");

	if (usb_disabled())

		return -ENODEV;

	ret = ohci_xls_probe_internal(&ohci_xls_hc_driver, dev);

	return ret;

}



static int ohci_xls_remove(struct platform_device *dev)

{

	struct usb_hcd *hcd = platform_get_drvdata(dev);



	usb_remove_hcd(hcd);

	iounmap(hcd->regs);

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

	usb_put_hcd(hcd);

	return 0;

}



static struct platform_driver ohci_xls_driver = {

	.probe		= ohci_xls_probe,

	.remove		= ohci_xls_remove,

	.shutdown	= usb_hcd_platform_shutdown,

	.driver		= {

		.name	= "ohci-xls-0",

		.owner	= THIS_MODULE,

	},

};