Merge branch 'samsung/ohci' into next/drivers

* samsung/ohci:
  ARM: EXYNOS: Add USB OHCI support to ORIGEN board
  USB: Add Samsung Exynos OHCI diver
  ARM: EXYNOS: Add USB OHCI support to SMDKV310 board
  ARM: EXYNOS: Add USB OHCI device

13 files changed, 410 insertions, 0 deletions

diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index 724ec0f3560d..5ca0bddf65fa 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -82,6 +82,11 @@ config EXYNOS4_DEV_DWMCI
         help
           Compile in platform device definitions for DWMCI
 
+config EXYNOS4_DEV_USB_OHCI
+        bool
+        help
+          Compile in platform device definition for USB OHCI
+
 config EXYNOS4_SETUP_I2C1
         bool
         help
@@ -179,6 +184,7 @@ config MACH_SMDKV310
         select SAMSUNG_DEV_KEYPAD
         select EXYNOS4_DEV_PD
         select SAMSUNG_DEV_PWM
+        select EXYNOS4_DEV_USB_OHCI
         select EXYNOS4_DEV_SYSMMU
         select EXYNOS4_SETUP_FIMD0
         select EXYNOS4_SETUP_I2C1
@@ -288,6 +294,7 @@ config MACH_ORIGEN
         select SAMSUNG_DEV_BACKLIGHT
         select SAMSUNG_DEV_PWM
         select EXYNOS4_DEV_PD
+        select EXYNOS4_DEV_USB_OHCI
         select EXYNOS4_SETUP_FIMD0
         select EXYNOS4_SETUP_SDHCI
         select EXYNOS4_SETUP_USB_PHY
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index 59069a35e40b..f5f3b7994923 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -44,6 +44,7 @@ obj-$(CONFIG_EXYNOS4_DEV_AHCI)		+= dev-ahci.o
 obj-$(CONFIG_EXYNOS4_DEV_PD)            += dev-pd.o
 obj-$(CONFIG_EXYNOS4_DEV_SYSMMU)        += dev-sysmmu.o
 obj-$(CONFIG_EXYNOS4_DEV_DWMCI)         += dev-dwmci.o
+obj-$(CONFIG_EXYNOS4_DEV_USB_OHCI)      += dev-ohci.o
 
 obj-$(CONFIG_EXYNOS4_SETUP_FIMC)        += setup-fimc.o
 obj-$(CONFIG_EXYNOS4_SETUP_FIMD0)       += setup-fimd0.o
diff --git a/arch/arm/mach-exynos/dev-ohci.c b/arch/arm/mach-exynos/dev-ohci.c
new file mode 100644
index 000000000000..b8e75300c77d
--- /dev/null
+++ b/arch/arm/mach-exynos/dev-ohci.c
@@ -0,0 +1,52 @@
+/* linux/arch/arm/mach-exynos/dev-ohci.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ *
+ * EXYNOS - OHCI support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+
+#include <mach/irqs.h>
+#include <mach/map.h>
+#include <mach/ohci.h>
+
+#include <plat/devs.h>
+#include <plat/usb-phy.h>
+
+static struct resource exynos4_ohci_resource[] = {
+        [0] = DEFINE_RES_MEM(EXYNOS4_PA_OHCI, SZ_256),
+        [1] = DEFINE_RES_IRQ(IRQ_USB_HOST),
+};
+
+static u64 exynos4_ohci_dma_mask = DMA_BIT_MASK(32);
+
+struct platform_device exynos4_device_ohci = {
+        .name           = "exynos-ohci",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(exynos4_ohci_resource),
+        .resource       = exynos4_ohci_resource,
+        .dev            = {
+                .dma_mask               = &exynos4_ohci_dma_mask,
+                .coherent_dma_mask      = DMA_BIT_MASK(32),
+        }
+};
+
+void __init exynos4_ohci_set_platdata(struct exynos4_ohci_platdata *pd)
+{
+        struct exynos4_ohci_platdata *npd;
+
+        npd = s3c_set_platdata(pd, sizeof(struct exynos4_ohci_platdata),
+                        &exynos4_device_ohci);
+
+        if (!npd->phy_init)
+                npd->phy_init = s5p_usb_phy_init;
+        if (!npd->phy_exit)
+                npd->phy_exit = s5p_usb_phy_exit;
+}
diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
index 058541d45af0..01e1cf3f9341 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -107,6 +107,7 @@
 #define EXYNOS4_PA_SROMC                0x12570000
 
 #define EXYNOS4_PA_EHCI                 0x12580000
+#define EXYNOS4_PA_OHCI                 0x12590000
 #define EXYNOS4_PA_HSPHY                0x125B0000
 #define EXYNOS4_PA_MFC                  0x13400000
 
diff --git a/arch/arm/mach-exynos/include/mach/ohci.h b/arch/arm/mach-exynos/include/mach/ohci.h
new file mode 100644
index 000000000000..c256c595be5e
--- /dev/null
+++ b/arch/arm/mach-exynos/include/mach/ohci.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics Co.Ltd
+ *              http://www.samsung.com/
+ *
+ * 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.
+ */
+
+#ifndef __MACH_EXYNOS_OHCI_H
+#define __MACH_EXYNOS_OHCI_H
+
+struct exynos4_ohci_platdata {
+        int (*phy_init)(struct platform_device *pdev, int type);
+        int (*phy_exit)(struct platform_device *pdev, int type);
+};
+
+extern void exynos4_ohci_set_platdata(struct exynos4_ohci_platdata *pd);
+
+#endif /* __MACH_EXYNOS_OHCI_H */
diff --git a/arch/arm/mach-exynos/mach-origen.c b/arch/arm/mach-exynos/mach-origen.c
index f80b563f2be7..b805e595cc35 100644
--- a/arch/arm/mach-exynos/mach-origen.c
+++ b/arch/arm/mach-exynos/mach-origen.c
@@ -41,6 +41,7 @@
 #include <plat/fb.h>
 #include <plat/mfc.h>
 
+#include <mach/ohci.h>
 #include <mach/map.h>
 
 /* Following are default values for UCON, ULCON and UFCON UART registers */
@@ -483,6 +484,16 @@ static void __init origen_ehci_init(void)
         s5p_ehci_set_platdata(pdata);
 }
 
+/* USB OHCI */
+static struct exynos4_ohci_platdata origen_ohci_pdata;
+
+static void __init origen_ohci_init(void)
+{
+        struct exynos4_ohci_platdata *pdata = &origen_ohci_pdata;
+
+        exynos4_ohci_set_platdata(pdata);
+}
+
 static struct gpio_keys_button origen_gpio_keys_table[] = {
         {
                 .code                   = KEY_MENU,
@@ -606,6 +617,7 @@ static struct platform_device *origen_devices[] __initdata = {
         &s5p_device_mfc_l,
         &s5p_device_mfc_r,
         &s5p_device_mixer,
+        &exynos4_device_ohci,
         &exynos4_device_pd[PD_LCD0],
         &exynos4_device_pd[PD_TV],
         &exynos4_device_pd[PD_G3D],
@@ -670,6 +682,7 @@ static void __init origen_machine_init(void)
         s3c_sdhci0_set_platdata(&origen_hsmmc0_pdata);
 
         origen_ehci_init();
+        origen_ohci_init();
         clk_xusbxti.rate = 24000000;
 
         s5p_tv_setup();
diff --git a/arch/arm/mach-exynos/mach-smdkv310.c b/arch/arm/mach-exynos/mach-smdkv310.c
index cec2afabe7b4..25a5a405c4bf 100644
--- a/arch/arm/mach-exynos/mach-smdkv310.c
+++ b/arch/arm/mach-exynos/mach-smdkv310.c
@@ -42,6 +42,7 @@
 #include <plat/clock.h>
 
 #include <mach/map.h>
+#include <mach/ohci.h>
 
 /* Following are default values for UCON, ULCON and UFCON UART registers */
 #define SMDKV310_UCON_DEFAULT   (S3C2410_UCON_TXILEVEL |        \
@@ -245,6 +246,16 @@ static void __init smdkv310_ehci_init(void)
         s5p_ehci_set_platdata(pdata);
 }
 
+/* USB OHCI */
+static struct exynos4_ohci_platdata smdkv310_ohci_pdata;
+
+static void __init smdkv310_ohci_init(void)
+{
+        struct exynos4_ohci_platdata *pdata = &smdkv310_ohci_pdata;
+
+        exynos4_ohci_set_platdata(pdata);
+}
+
 static struct platform_device *smdkv310_devices[] __initdata = {
         &s3c_device_hsmmc0,
         &s3c_device_hsmmc1,
@@ -261,6 +272,7 @@ static struct platform_device *smdkv310_devices[] __initdata = {
         &s5p_device_fimc3,
         &exynos4_device_ac97,
         &exynos4_device_i2s0,
+        &exynos4_device_ohci,
         &samsung_device_keypad,
         &s5p_device_mfc,
         &s5p_device_mfc_l,
@@ -363,6 +375,7 @@ static void __init smdkv310_machine_init(void)
         s5p_fimd0_set_platdata(&smdkv310_lcd0_pdata);
 
         smdkv310_ehci_init();
+        smdkv310_ohci_init();
         clk_xusbxti.rate = 24000000;
 
         platform_add_devices(smdkv310_devices, ARRAY_SIZE(smdkv310_devices));
diff --git a/arch/arm/mach-exynos/setup-usb-phy.c b/arch/arm/mach-exynos/setup-usb-phy.c
index 39aca045f660..41743d21e8c6 100644
--- a/arch/arm/mach-exynos/setup-usb-phy.c
+++ b/arch/arm/mach-exynos/setup-usb-phy.c
@@ -19,6 +19,13 @@
 #include <plat/cpu.h>
 #include <plat/usb-phy.h>
 
+static atomic_t host_usage;
+
+static int exynos4_usb_host_phy_is_on(void)
+{
+        return (readl(EXYNOS4_PHYPWR) & PHY1_STD_ANALOG_POWERDOWN) ? 0 : 1;
+}
+
 static int exynos4_usb_phy1_init(struct platform_device *pdev)
 {
         struct clk *otg_clk;
@@ -27,6 +34,8 @@ static int exynos4_usb_phy1_init(struct platform_device *pdev)
         u32 rstcon;
         int err;
 
+        atomic_inc(&host_usage);
+
         otg_clk = clk_get(&pdev->dev, "otg");
         if (IS_ERR(otg_clk)) {
                 dev_err(&pdev->dev, "Failed to get otg clock\n");
@@ -39,6 +48,9 @@ static int exynos4_usb_phy1_init(struct platform_device *pdev)
                 return err;
         }
 
+        if (exynos4_usb_host_phy_is_on())
+                return 0;
+
         writel(readl(S5P_USBHOST_PHY_CONTROL) | S5P_USBHOST_PHY_ENABLE,
                         S5P_USBHOST_PHY_CONTROL);
 
@@ -95,6 +107,9 @@ static int exynos4_usb_phy1_exit(struct platform_device *pdev)
         struct clk *otg_clk;
         int err;
 
+        if (atomic_dec_return(&host_usage) > 0)
+                return 0;
+
         otg_clk = clk_get(&pdev->dev, "otg");
         if (IS_ERR(otg_clk)) {
                 dev_err(&pdev->dev, "Failed to get otg clock\n");
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index ab633c9c2aec..a2ff27e3ec30 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -129,6 +129,7 @@ extern struct platform_device exynos4_device_dwmci;
 extern struct platform_device exynos4_device_i2s0;
 extern struct platform_device exynos4_device_i2s1;
 extern struct platform_device exynos4_device_i2s2;
+extern struct platform_device exynos4_device_ohci;
 extern struct platform_device exynos4_device_pcm0;
 extern struct platform_device exynos4_device_pcm1;
 extern struct platform_device exynos4_device_pcm2;
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 791f11bed606..75823a1abeb6 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -48,6 +48,7 @@ config USB_ARCH_HAS_OHCI
         default y if ARCH_DAVINCI_DA8XX
         default y if ARCH_CNS3XXX
         default y if PLAT_SPEAR
+        default y if ARCH_EXYNOS
         # PPC:
         default y if STB03xxx
         default y if PPC_MPC52xx
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 060e0e2b1ae6..eea85dc16826 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -371,6 +371,12 @@ config USB_OHCI_SH
           Enables support for the on-chip OHCI controller on the SuperH.
           If you use the PCI OHCI controller, this option is not necessary.
 
+config USB_OHCI_EXYNOS
+        boolean "OHCI support for Samsung EXYNOS SoC Series"
+        depends on USB_OHCI_HCD && ARCH_EXYNOS
+        help
+         Enable support for the Samsung Exynos SOC's on-chip OHCI controller.
+
 config USB_CNS3XXX_OHCI
         bool "Cavium CNS3XXX OHCI Module"
         depends on USB_OHCI_HCD && ARCH_CNS3XXX
diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c
new file mode 100644
index 000000000000..55aa35aa3d7b
--- /dev/null
+++ b/drivers/usb/host/ohci-exynos.c
@@ -0,0 +1,274 @@
+/*
+ * SAMSUNG EXYNOS USB HOST OHCI Controller
+ *
+ * Copyright (C) 2011 Samsung Electronics Co.Ltd
+ * Author: Jingoo Han <jg1.han@samsung.com>
+ *
+ * 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.
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <mach/ohci.h>
+#include <plat/usb-phy.h>
+
+struct exynos_ohci_hcd {
+        struct device *dev;
+        struct usb_hcd *hcd;
+        struct clk *clk;
+};
+
+static int ohci_exynos_start(struct usb_hcd *hcd)
+{
+        struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+        int ret;
+
+        ohci_dbg(ohci, "ohci_exynos_start, ohci:%p", ohci);
+
+        ret = ohci_init(ohci);
+        if (ret < 0)
+                return ret;
+
+        ret = ohci_run(ohci);
+        if (ret < 0) {
+                err("can't start %s", hcd->self.bus_name);
+                ohci_stop(hcd);
+                return ret;
+        }
+
+        return 0;
+}
+
+static const struct hc_driver exynos_ohci_hc_driver = {
+        .description            = hcd_name,
+        .product_desc           = "EXYNOS OHCI Host Controller",
+        .hcd_priv_size          = sizeof(struct ohci_hcd),
+
+        .irq                    = ohci_irq,
+        .flags                  = HCD_MEMORY|HCD_USB11,
+
+        .start                  = ohci_exynos_start,
+        .stop                   = ohci_stop,
+        .shutdown               = ohci_shutdown,
+
+        .get_frame_number       = ohci_get_frame,
+
+        .urb_enqueue            = ohci_urb_enqueue,
+        .urb_dequeue            = ohci_urb_dequeue,
+        .endpoint_disable       = ohci_endpoint_disable,
+
+        .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 __devinit exynos_ohci_probe(struct platform_device *pdev)
+{
+        struct exynos4_ohci_platdata *pdata;
+        struct exynos_ohci_hcd *exynos_ohci;
+        struct usb_hcd *hcd;
+        struct ohci_hcd *ohci;
+        struct resource *res;
+        int irq;
+        int err;
+
+        pdata = pdev->dev.platform_data;
+        if (!pdata) {
+                dev_err(&pdev->dev, "No platform data defined\n");
+                return -EINVAL;
+        }
+
+        exynos_ohci = kzalloc(sizeof(struct exynos_ohci_hcd), GFP_KERNEL);
+        if (!exynos_ohci)
+                return -ENOMEM;
+
+        exynos_ohci->dev = &pdev->dev;
+
+        hcd = usb_create_hcd(&exynos_ohci_hc_driver, &pdev->dev,
+                                        dev_name(&pdev->dev));
+        if (!hcd) {
+                dev_err(&pdev->dev, "Unable to create HCD\n");
+                err = -ENOMEM;
+                goto fail_hcd;
+        }
+
+        exynos_ohci->hcd = hcd;
+        exynos_ohci->clk = clk_get(&pdev->dev, "usbhost");
+
+        if (IS_ERR(exynos_ohci->clk)) {
+                dev_err(&pdev->dev, "Failed to get usbhost clock\n");
+                err = PTR_ERR(exynos_ohci->clk);
+                goto fail_clk;
+        }
+
+        err = clk_enable(exynos_ohci->clk);
+        if (err)
+                goto fail_clken;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res) {
+                dev_err(&pdev->dev, "Failed to get I/O memory\n");
+                err = -ENXIO;
+                goto fail_io;
+        }
+
+        hcd->rsrc_start = res->start;
+        hcd->rsrc_len = resource_size(res);
+        hcd->regs = ioremap(res->start, resource_size(res));
+        if (!hcd->regs) {
+                dev_err(&pdev->dev, "Failed to remap I/O memory\n");
+                err = -ENOMEM;
+                goto fail_io;
+        }
+
+        irq = platform_get_irq(pdev, 0);
+        if (!irq) {
+                dev_err(&pdev->dev, "Failed to get IRQ\n");
+                err = -ENODEV;
+                goto fail;
+        }
+
+        if (pdata->phy_init)
+                pdata->phy_init(pdev, S5P_USB_PHY_HOST);
+
+        ohci = hcd_to_ohci(hcd);
+        ohci_hcd_init(ohci);
+
+        err = usb_add_hcd(hcd, irq, IRQF_SHARED);
+        if (err) {
+                dev_err(&pdev->dev, "Failed to add USB HCD\n");
+                goto fail;
+        }
+
+        platform_set_drvdata(pdev, exynos_ohci);
+
+        return 0;
+
+fail:
+        iounmap(hcd->regs);
+fail_io:
+        clk_disable(exynos_ohci->clk);
+fail_clken:
+        clk_put(exynos_ohci->clk);
+fail_clk:
+        usb_put_hcd(hcd);
+fail_hcd:
+        kfree(exynos_ohci);
+        return err;
+}
+
+static int __devexit exynos_ohci_remove(struct platform_device *pdev)
+{
+        struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data;
+        struct exynos_ohci_hcd *exynos_ohci = platform_get_drvdata(pdev);
+        struct usb_hcd *hcd = exynos_ohci->hcd;
+
+        usb_remove_hcd(hcd);
+
+        if (pdata && pdata->phy_exit)
+                pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
+
+        iounmap(hcd->regs);
+
+        clk_disable(exynos_ohci->clk);
+        clk_put(exynos_ohci->clk);
+
+        usb_put_hcd(hcd);
+        kfree(exynos_ohci);
+
+        return 0;
+}
+
+static void exynos_ohci_shutdown(struct platform_device *pdev)
+{
+        struct exynos_ohci_hcd *exynos_ohci = platform_get_drvdata(pdev);
+        struct usb_hcd *hcd = exynos_ohci->hcd;
+
+        if (hcd->driver->shutdown)
+                hcd->driver->shutdown(hcd);
+}
+
+#ifdef CONFIG_PM
+static int exynos_ohci_suspend(struct device *dev)
+{
+        struct exynos_ohci_hcd *exynos_ohci = dev_get_drvdata(dev);
+        struct usb_hcd *hcd = exynos_ohci->hcd;
+        struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+        struct platform_device *pdev = to_platform_device(dev);
+        struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data;
+        unsigned long flags;
+        int rc = 0;
+
+        /*
+         * Root hub was already suspended. Disable irq emission and
+         * mark HW unaccessible, bail out if RH has been resumed. Use
+         * the spinlock to properly synchronize with possible pending
+         * RH suspend or resume activity.
+         *
+         * This is still racy as hcd->state is manipulated outside of
+         * any locks =P But that will be a different fix.
+         */
+        spin_lock_irqsave(&ohci->lock, flags);
+        if (hcd->state != HC_STATE_SUSPENDED && hcd->state != HC_STATE_HALT) {
+                rc = -EINVAL;
+                goto fail;
+        }
+
+        clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+
+        if (pdata && pdata->phy_exit)
+                pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
+fail:
+        spin_unlock_irqrestore(&ohci->lock, flags);
+
+        return rc;
+}
+
+static int exynos_ohci_resume(struct device *dev)
+{
+        struct exynos_ohci_hcd *exynos_ohci = dev_get_drvdata(dev);
+        struct usb_hcd *hcd = exynos_ohci->hcd;
+        struct platform_device *pdev = to_platform_device(dev);
+        struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data;
+
+        if (pdata && pdata->phy_init)
+                pdata->phy_init(pdev, S5P_USB_PHY_HOST);
+
+        /* Mark hardware accessible again as we are out of D3 state by now */
+        set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+
+        ohci_finish_controller_resume(hcd);
+
+        return 0;
+}
+#else
+#define exynos_ohci_suspend     NULL
+#define exynos_ohci_resume      NULL
+#endif
+
+static const struct dev_pm_ops exynos_ohci_pm_ops = {
+        .suspend        = exynos_ohci_suspend,
+        .resume         = exynos_ohci_resume,
+};
+
+static struct platform_driver exynos_ohci_driver = {
+        .probe          = exynos_ohci_probe,
+        .remove         = __devexit_p(exynos_ohci_remove),
+        .shutdown       = exynos_ohci_shutdown,
+        .driver = {
+                .name   = "exynos-ohci",
+                .owner  = THIS_MODULE,
+                .pm     = &exynos_ohci_pm_ops,
+        }
+};
+
+MODULE_ALIAS("platform:exynos-ohci");
+MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index b2639191549e..a1006ff79384 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1005,6 +1005,11 @@ MODULE_LICENSE ("GPL");
 #define PLATFORM_DRIVER         ohci_hcd_s3c2410_driver
 #endif
 
+#ifdef CONFIG_USB_OHCI_EXYNOS
+#include "ohci-exynos.c"
+#define PLATFORM_DRIVER         exynos_ohci_driver
+#endif
+
 #ifdef CONFIG_USB_OHCI_HCD_OMAP1
 #include "ohci-omap.c"
 #define OMAP1_PLATFORM_DRIVER   ohci_hcd_omap_driver