Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 639 insertions, 0 deletions

diff --git a/kernel/drivers/usb/host/ohci-pxa27x.c b/kernel/drivers/usb/host/ohci-pxa27x.c
new file mode 100644
index 000000000..ba1bec7db
--- /dev/null
+++ b/kernel/drivers/usb/host/ohci-pxa27x.c
@@ -0,0 +1,639 @@
+/*
+ * 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
+ *
+ * Bus Glue for pxa27x
+ *
+ * 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 pxa27x from ohci-lh7a404.c
+ *  by Nick Bane <nick@cecomputing.co.uk> 26-8-2004
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_data/usb-ohci-pxa27x.h>
+#include <linux/platform_data/usb-pxa3xx-ulpi.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/signal.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include <linux/usb/otg.h>
+
+#include <mach/hardware.h>
+
+#include "ohci.h"
+
+#define DRIVER_DESC "OHCI PXA27x/PXA3x driver"
+
+/*
+ * UHC: USB Host Controller (OHCI-like) register definitions
+ */
+#define UHCREV		(0x0000) /* UHC HCI Spec Revision */
+#define UHCHCON		(0x0004) /* UHC Host Control Register */
+#define UHCCOMS		(0x0008) /* UHC Command Status Register */
+#define UHCINTS		(0x000C) /* UHC Interrupt Status Register */
+#define UHCINTE		(0x0010) /* UHC Interrupt Enable */
+#define UHCINTD		(0x0014) /* UHC Interrupt Disable */
+#define UHCHCCA		(0x0018) /* UHC Host Controller Comm. Area */
+#define UHCPCED		(0x001C) /* UHC Period Current Endpt Descr */
+#define UHCCHED		(0x0020) /* UHC Control Head Endpt Descr */
+#define UHCCCED		(0x0024) /* UHC Control Current Endpt Descr */
+#define UHCBHED		(0x0028) /* UHC Bulk Head Endpt Descr */
+#define UHCBCED		(0x002C) /* UHC Bulk Current Endpt Descr */
+#define UHCDHEAD	(0x0030) /* UHC Done Head */
+#define UHCFMI		(0x0034) /* UHC Frame Interval */
+#define UHCFMR		(0x0038) /* UHC Frame Remaining */
+#define UHCFMN		(0x003C) /* UHC Frame Number */
+#define UHCPERS		(0x0040) /* UHC Periodic Start */
+#define UHCLS		(0x0044) /* UHC Low Speed Threshold */
+
+#define UHCRHDA		(0x0048) /* UHC Root Hub Descriptor A */
+#define UHCRHDA_NOCP	(1 << 12)	/* No over current protection */
+#define UHCRHDA_OCPM	(1 << 11)	/* Over Current Protection Mode */
+#define UHCRHDA_POTPGT(x) \
+			(((x) & 0xff) << 24) /* Power On To Power Good Time */
+
+#define UHCRHDB		(0x004C) /* UHC Root Hub Descriptor B */
+#define UHCRHS		(0x0050) /* UHC Root Hub Status */
+#define UHCRHPS1	(0x0054) /* UHC Root Hub Port 1 Status */
+#define UHCRHPS2	(0x0058) /* UHC Root Hub Port 2 Status */
+#define UHCRHPS3	(0x005C) /* UHC Root Hub Port 3 Status */
+
+#define UHCSTAT		(0x0060) /* UHC Status Register */
+#define UHCSTAT_UPS3	(1 << 16)	/* USB Power Sense Port3 */
+#define UHCSTAT_SBMAI	(1 << 15)	/* System Bus Master Abort Interrupt*/
+#define UHCSTAT_SBTAI	(1 << 14)	/* System Bus Target Abort Interrupt*/
+#define UHCSTAT_UPRI	(1 << 13)	/* USB Port Resume Interrupt */
+#define UHCSTAT_UPS2	(1 << 12)	/* USB Power Sense Port 2 */
+#define UHCSTAT_UPS1	(1 << 11)	/* USB Power Sense Port 1 */
+#define UHCSTAT_HTA	(1 << 10)	/* HCI Target Abort */
+#define UHCSTAT_HBA	(1 << 8)	/* HCI Buffer Active */
+#define UHCSTAT_RWUE	(1 << 7)	/* HCI Remote Wake Up Event */
+
+#define UHCHR           (0x0064) /* UHC Reset Register */
+#define UHCHR_SSEP3	(1 << 11)	/* Sleep Standby Enable for Port3 */
+#define UHCHR_SSEP2	(1 << 10)	/* Sleep Standby Enable for Port2 */
+#define UHCHR_SSEP1	(1 << 9)	/* Sleep Standby Enable for Port1 */
+#define UHCHR_PCPL	(1 << 7)	/* Power control polarity low */
+#define UHCHR_PSPL	(1 << 6)	/* Power sense polarity low */
+#define UHCHR_SSE	(1 << 5)	/* Sleep Standby Enable */
+#define UHCHR_UIT	(1 << 4)	/* USB Interrupt Test */
+#define UHCHR_SSDC	(1 << 3)	/* Simulation Scale Down Clock */
+#define UHCHR_CGR	(1 << 2)	/* Clock Generation Reset */
+#define UHCHR_FHR	(1 << 1)	/* Force Host Controller Reset */
+#define UHCHR_FSBIR	(1 << 0)	/* Force System Bus Iface Reset */
+
+#define UHCHIE          (0x0068) /* UHC Interrupt Enable Register*/
+#define UHCHIE_UPS3IE	(1 << 14)	/* Power Sense Port3 IntEn */
+#define UHCHIE_UPRIE	(1 << 13)	/* Port Resume IntEn */
+#define UHCHIE_UPS2IE	(1 << 12)	/* Power Sense Port2 IntEn */
+#define UHCHIE_UPS1IE	(1 << 11)	/* Power Sense Port1 IntEn */
+#define UHCHIE_TAIE	(1 << 10)	/* HCI Interface Transfer Abort
+					   Interrupt Enable*/
+#define UHCHIE_HBAIE	(1 << 8)	/* HCI Buffer Active IntEn */
+#define UHCHIE_RWIE	(1 << 7)	/* Remote Wake-up IntEn */
+
+#define UHCHIT          (0x006C) /* UHC Interrupt Test register */
+
+#define PXA_UHC_MAX_PORTNUM    3
+
+static const char hcd_name[] = "ohci-pxa27x";
+
+static struct hc_driver __read_mostly ohci_pxa27x_hc_driver;
+
+struct pxa27x_ohci {
+	struct clk	*clk;
+	void __iomem	*mmio_base;
+	struct regulator *vbus[3];
+	bool		vbus_enabled[3];
+};
+
+#define to_pxa27x_ohci(hcd)	(struct pxa27x_ohci *)(hcd_to_ohci(hcd)->priv)
+
+/*
+  PMM_NPS_MODE -- PMM Non-power switching mode
+      Ports are powered continuously.
+
+  PMM_GLOBAL_MODE -- PMM global switching mode
+      All ports are powered at the same time.
+
+  PMM_PERPORT_MODE -- PMM per port switching mode
+      Ports are powered individually.
+ */
+static int pxa27x_ohci_select_pmm(struct pxa27x_ohci *pxa_ohci, int mode)
+{
+	uint32_t uhcrhda = __raw_readl(pxa_ohci->mmio_base + UHCRHDA);
+	uint32_t uhcrhdb = __raw_readl(pxa_ohci->mmio_base + UHCRHDB);
+
+	switch (mode) {
+	case PMM_NPS_MODE:
+		uhcrhda |= RH_A_NPS;
+		break;
+	case PMM_GLOBAL_MODE:
+		uhcrhda &= ~(RH_A_NPS & RH_A_PSM);
+		break;
+	case PMM_PERPORT_MODE:
+		uhcrhda &= ~(RH_A_NPS);
+		uhcrhda |= RH_A_PSM;
+
+		/* Set port power control mask bits, only 3 ports. */
+		uhcrhdb |= (0x7<<17);
+		break;
+	default:
+		printk( KERN_ERR
+			"Invalid mode %d, set to non-power switch mode.\n",
+			mode );
+
+		uhcrhda |= RH_A_NPS;
+	}
+
+	__raw_writel(uhcrhda, pxa_ohci->mmio_base + UHCRHDA);
+	__raw_writel(uhcrhdb, pxa_ohci->mmio_base + UHCRHDB);
+	return 0;
+}
+
+static int pxa27x_ohci_set_vbus_power(struct pxa27x_ohci *pxa_ohci,
+				      unsigned int port, bool enable)
+{
+	struct regulator *vbus = pxa_ohci->vbus[port];
+	int ret = 0;
+
+	if (IS_ERR_OR_NULL(vbus))
+		return 0;
+
+	if (enable && !pxa_ohci->vbus_enabled[port])
+		ret = regulator_enable(vbus);
+	else if (!enable && pxa_ohci->vbus_enabled[port])
+		ret = regulator_disable(vbus);
+
+	if (ret < 0)
+		return ret;
+
+	pxa_ohci->vbus_enabled[port] = enable;
+
+	return 0;
+}
+
+static int pxa27x_ohci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+				   u16 wIndex, char *buf, u16 wLength)
+{
+	struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
+	int ret;
+
+	switch (typeReq) {
+	case SetPortFeature:
+	case ClearPortFeature:
+		if (!wIndex || wIndex > 3)
+			return -EPIPE;
+
+		if (wValue != USB_PORT_FEAT_POWER)
+			break;
+
+		ret = pxa27x_ohci_set_vbus_power(pxa_ohci, wIndex - 1,
+						 typeReq == SetPortFeature);
+		if (ret)
+			return ret;
+		break;
+	}
+
+	return ohci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength);
+}
+/*-------------------------------------------------------------------------*/
+
+static inline void pxa27x_setup_hc(struct pxa27x_ohci *pxa_ohci,
+				   struct pxaohci_platform_data *inf)
+{
+	uint32_t uhchr = __raw_readl(pxa_ohci->mmio_base + UHCHR);
+	uint32_t uhcrhda = __raw_readl(pxa_ohci->mmio_base + UHCRHDA);
+
+	if (inf->flags & ENABLE_PORT1)
+		uhchr &= ~UHCHR_SSEP1;
+
+	if (inf->flags & ENABLE_PORT2)
+		uhchr &= ~UHCHR_SSEP2;
+
+	if (inf->flags & ENABLE_PORT3)
+		uhchr &= ~UHCHR_SSEP3;
+
+	if (inf->flags & POWER_CONTROL_LOW)
+		uhchr |= UHCHR_PCPL;
+
+	if (inf->flags & POWER_SENSE_LOW)
+		uhchr |= UHCHR_PSPL;
+
+	if (inf->flags & NO_OC_PROTECTION)
+		uhcrhda |= UHCRHDA_NOCP;
+	else
+		uhcrhda &= ~UHCRHDA_NOCP;
+
+	if (inf->flags & OC_MODE_PERPORT)
+		uhcrhda |= UHCRHDA_OCPM;
+	else
+		uhcrhda &= ~UHCRHDA_OCPM;
+
+	if (inf->power_on_delay) {
+		uhcrhda &= ~UHCRHDA_POTPGT(0xff);
+		uhcrhda |= UHCRHDA_POTPGT(inf->power_on_delay / 2);
+	}
+
+	__raw_writel(uhchr, pxa_ohci->mmio_base + UHCHR);
+	__raw_writel(uhcrhda, pxa_ohci->mmio_base + UHCRHDA);
+}
+
+static inline void pxa27x_reset_hc(struct pxa27x_ohci *pxa_ohci)
+{
+	uint32_t uhchr = __raw_readl(pxa_ohci->mmio_base + UHCHR);
+
+	__raw_writel(uhchr | UHCHR_FHR, pxa_ohci->mmio_base + UHCHR);
+	udelay(11);
+	__raw_writel(uhchr & ~UHCHR_FHR, pxa_ohci->mmio_base + UHCHR);
+}
+
+#ifdef CONFIG_PXA27x
+extern void pxa27x_clear_otgph(void);
+#else
+#define pxa27x_clear_otgph()	do {} while (0)
+#endif
+
+static int pxa27x_start_hc(struct pxa27x_ohci *pxa_ohci, struct device *dev)
+{
+	int retval = 0;
+	struct pxaohci_platform_data *inf;
+	uint32_t uhchr;
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+	inf = dev_get_platdata(dev);
+
+	clk_prepare_enable(pxa_ohci->clk);
+
+	pxa27x_reset_hc(pxa_ohci);
+
+	uhchr = __raw_readl(pxa_ohci->mmio_base + UHCHR) | UHCHR_FSBIR;
+	__raw_writel(uhchr, pxa_ohci->mmio_base + UHCHR);
+
+	while (__raw_readl(pxa_ohci->mmio_base + UHCHR) & UHCHR_FSBIR)
+		cpu_relax();
+
+	pxa27x_setup_hc(pxa_ohci, inf);
+
+	if (inf->init)
+		retval = inf->init(dev);
+
+	if (retval < 0)
+		return retval;
+
+	if (cpu_is_pxa3xx())
+		pxa3xx_u2d_start_hc(&hcd->self);
+
+	uhchr = __raw_readl(pxa_ohci->mmio_base + UHCHR) & ~UHCHR_SSE;
+	__raw_writel(uhchr, pxa_ohci->mmio_base + UHCHR);
+	__raw_writel(UHCHIE_UPRIE | UHCHIE_RWIE, pxa_ohci->mmio_base + UHCHIE);
+
+	/* Clear any OTG Pin Hold */
+	pxa27x_clear_otgph();
+	return 0;
+}
+
+static void pxa27x_stop_hc(struct pxa27x_ohci *pxa_ohci, struct device *dev)
+{
+	struct pxaohci_platform_data *inf;
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+	uint32_t uhccoms;
+
+	inf = dev_get_platdata(dev);
+
+	if (cpu_is_pxa3xx())
+		pxa3xx_u2d_stop_hc(&hcd->self);
+
+	if (inf->exit)
+		inf->exit(dev);
+
+	pxa27x_reset_hc(pxa_ohci);
+
+	/* Host Controller Reset */
+	uhccoms = __raw_readl(pxa_ohci->mmio_base + UHCCOMS) | 0x01;
+	__raw_writel(uhccoms, pxa_ohci->mmio_base + UHCCOMS);
+	udelay(10);
+
+	clk_disable_unprepare(pxa_ohci->clk);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id pxa_ohci_dt_ids[] = {
+	{ .compatible = "marvell,pxa-ohci" },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(of, pxa_ohci_dt_ids);
+
+static int ohci_pxa_of_init(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct pxaohci_platform_data *pdata;
+	u32 tmp;
+	int ret;
+
+	if (!np)
+		return 0;
+
+	/* Right now device-tree probed devices don't get dma_mask set.
+	 * Since shared usb code relies on it, set it here for now.
+	 * Once we have dma capability bindings this can go away.
+	 */
+	ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (ret)
+		return ret;
+
+	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return -ENOMEM;
+
+	if (of_get_property(np, "marvell,enable-port1", NULL))
+		pdata->flags |= ENABLE_PORT1;
+	if (of_get_property(np, "marvell,enable-port2", NULL))
+		pdata->flags |= ENABLE_PORT2;
+	if (of_get_property(np, "marvell,enable-port3", NULL))
+		pdata->flags |= ENABLE_PORT3;
+	if (of_get_property(np, "marvell,port-sense-low", NULL))
+		pdata->flags |= POWER_SENSE_LOW;
+	if (of_get_property(np, "marvell,power-control-low", NULL))
+		pdata->flags |= POWER_CONTROL_LOW;
+	if (of_get_property(np, "marvell,no-oc-protection", NULL))
+		pdata->flags |= NO_OC_PROTECTION;
+	if (of_get_property(np, "marvell,oc-mode-perport", NULL))
+		pdata->flags |= OC_MODE_PERPORT;
+	if (!of_property_read_u32(np, "marvell,power-on-delay", &tmp))
+		pdata->power_on_delay = tmp;
+	if (!of_property_read_u32(np, "marvell,port-mode", &tmp))
+		pdata->port_mode = tmp;
+	if (!of_property_read_u32(np, "marvell,power-budget", &tmp))
+		pdata->power_budget = tmp;
+
+	pdev->dev.platform_data = pdata;
+
+	return 0;
+}
+#else
+static int ohci_pxa_of_init(struct platform_device *pdev)
+{
+	return 0;
+}
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+
+/**
+ * usb_hcd_pxa27x_probe - initialize pxa27x-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_pxa27x_probe (const struct hc_driver *driver, struct platform_device *pdev)
+{
+	int retval, irq;
+	struct usb_hcd *hcd;
+	struct pxaohci_platform_data *inf;
+	struct pxa27x_ohci *pxa_ohci;
+	struct ohci_hcd *ohci;
+	struct resource *r;
+	struct clk *usb_clk;
+	unsigned int i;
+
+	retval = ohci_pxa_of_init(pdev);
+	if (retval)
+		return retval;
+
+	inf = dev_get_platdata(&pdev->dev);
+
+	if (!inf)
+		return -ENODEV;
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		pr_err("no resource of IORESOURCE_IRQ");
+		return -ENXIO;
+	}
+
+	usb_clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(usb_clk))
+		return PTR_ERR(usb_clk);
+
+	hcd = usb_create_hcd (driver, &pdev->dev, "pxa27x");
+	if (!hcd)
+		return -ENOMEM;
+
+	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	hcd->regs = devm_ioremap_resource(&pdev->dev, r);
+	if (IS_ERR(hcd->regs)) {
+		retval = PTR_ERR(hcd->regs);
+		goto err;
+	}
+	hcd->rsrc_start = r->start;
+	hcd->rsrc_len = resource_size(r);
+
+	/* initialize "struct pxa27x_ohci" */
+	pxa_ohci = to_pxa27x_ohci(hcd);
+	pxa_ohci->clk = usb_clk;
+	pxa_ohci->mmio_base = (void __iomem *)hcd->regs;
+
+	for (i = 0; i < 3; ++i) {
+		char name[6];
+
+		if (!(inf->flags & (ENABLE_PORT1 << i)))
+			continue;
+
+		sprintf(name, "vbus%u", i + 1);
+		pxa_ohci->vbus[i] = devm_regulator_get(&pdev->dev, name);
+	}
+
+	retval = pxa27x_start_hc(pxa_ohci, &pdev->dev);
+	if (retval < 0) {
+		pr_debug("pxa27x_start_hc failed");
+		goto err;
+	}
+
+	/* Select Power Management Mode */
+	pxa27x_ohci_select_pmm(pxa_ohci, inf->port_mode);
+
+	if (inf->power_budget)
+		hcd->power_budget = inf->power_budget;
+
+	/* The value of NDP in roothub_a is incorrect on this hardware */
+	ohci = hcd_to_ohci(hcd);
+	ohci->num_ports = 3;
+
+	retval = usb_add_hcd(hcd, irq, 0);
+	if (retval == 0) {
+		device_wakeup_enable(hcd->self.controller);
+		return retval;
+	}
+
+	pxa27x_stop_hc(pxa_ohci, &pdev->dev);
+ err:
+	usb_put_hcd(hcd);
+	return retval;
+}
+
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/**
+ * usb_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_pxa27x_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_pxa27x_remove (struct usb_hcd *hcd, struct platform_device *pdev)
+{
+	struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
+	unsigned int i;
+
+	usb_remove_hcd(hcd);
+	pxa27x_stop_hc(pxa_ohci, &pdev->dev);
+
+	for (i = 0; i < 3; ++i)
+		pxa27x_ohci_set_vbus_power(pxa_ohci, i, false);
+
+	usb_put_hcd(hcd);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int ohci_hcd_pxa27x_drv_probe(struct platform_device *pdev)
+{
+	pr_debug ("In ohci_hcd_pxa27x_drv_probe");
+
+	if (usb_disabled())
+		return -ENODEV;
+
+	return usb_hcd_pxa27x_probe(&ohci_pxa27x_hc_driver, pdev);
+}
+
+static int ohci_hcd_pxa27x_drv_remove(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+	usb_hcd_pxa27x_remove(hcd, pdev);
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int ohci_hcd_pxa27x_drv_suspend(struct device *dev)
+{
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+	struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
+	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+	bool do_wakeup = device_may_wakeup(dev);
+	int ret;
+
+
+	if (time_before(jiffies, ohci->next_statechange))
+		msleep(5);
+	ohci->next_statechange = jiffies;
+
+	ret = ohci_suspend(hcd, do_wakeup);
+	if (ret)
+		return ret;
+
+	pxa27x_stop_hc(pxa_ohci, dev);
+	return ret;
+}
+
+static int ohci_hcd_pxa27x_drv_resume(struct device *dev)
+{
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+	struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
+	struct pxaohci_platform_data *inf = dev_get_platdata(dev);
+	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+	int status;
+
+	if (time_before(jiffies, ohci->next_statechange))
+		msleep(5);
+	ohci->next_statechange = jiffies;
+
+	status = pxa27x_start_hc(pxa_ohci, dev);
+	if (status < 0)
+		return status;
+
+	/* Select Power Management Mode */
+	pxa27x_ohci_select_pmm(pxa_ohci, inf->port_mode);
+
+	ohci_resume(hcd, false);
+	return 0;
+}
+
+static const struct dev_pm_ops ohci_hcd_pxa27x_pm_ops = {
+	.suspend	= ohci_hcd_pxa27x_drv_suspend,
+	.resume		= ohci_hcd_pxa27x_drv_resume,
+};
+#endif
+
+static struct platform_driver ohci_hcd_pxa27x_driver = {
+	.probe		= ohci_hcd_pxa27x_drv_probe,
+	.remove		= ohci_hcd_pxa27x_drv_remove,
+	.shutdown	= usb_hcd_platform_shutdown,
+	.driver		= {
+		.name	= "pxa27x-ohci",
+		.of_match_table = of_match_ptr(pxa_ohci_dt_ids),
+#ifdef CONFIG_PM
+		.pm	= &ohci_hcd_pxa27x_pm_ops,
+#endif
+	},
+};
+
+static const struct ohci_driver_overrides pxa27x_overrides __initconst = {
+	.extra_priv_size =      sizeof(struct pxa27x_ohci),
+};
+
+static int __init ohci_pxa27x_init(void)
+{
+	if (usb_disabled())
+		return -ENODEV;
+
+	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+
+	ohci_init_driver(&ohci_pxa27x_hc_driver, &pxa27x_overrides);
+	ohci_pxa27x_hc_driver.hub_control = pxa27x_ohci_hub_control;
+
+	return platform_driver_register(&ohci_hcd_pxa27x_driver);
+}
+module_init(ohci_pxa27x_init);
+
+static void __exit ohci_pxa27x_cleanup(void)
+{
+	platform_driver_unregister(&ohci_hcd_pxa27x_driver);
+}
+module_exit(ohci_pxa27x_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pxa27x-ohci");