ARM i.MX ehci: factor out soc specific functions

Currently we have a mxc_initialize_usb_hw which is called on every
i.MX SoC. This function dispatches the different SoC types, which
is quite ugly. This patch moves the SoC specific USB initialization
to their correspondive mach directories.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

10 files changed, 502 insertions, 338 deletions

diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 3e49ae0618aa..b85794d27991 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -9,10 +9,10 @@ obj-$(CONFIG_IMX_HAVE_DMA_V1) += dma-v1.o
 obj-$(CONFIG_ARCH_MX1) += clock-imx1.o mm-imx1.o
 obj-$(CONFIG_MACH_MX21) += clock-imx21.o mm-imx21.o
 
-obj-$(CONFIG_ARCH_MX25) += clock-imx25.o mm-imx25.o
+obj-$(CONFIG_ARCH_MX25) += clock-imx25.o mm-imx25.o ehci-imx25.o
 
 obj-$(CONFIG_MACH_MX27) += cpu-imx27.o pm-imx27.o
-obj-$(CONFIG_MACH_MX27) += clock-imx27.o mm-imx27.o
+obj-$(CONFIG_MACH_MX27) += clock-imx27.o mm-imx27.o ehci-imx27.o
 
 # Support for CMOS sensor interface
 obj-$(CONFIG_MX1_VIDEO)	+= mx1-camera-fiq.o mx1-camera-fiq-ksym.o
diff --git a/arch/arm/mach-imx/ehci-imx25.c b/arch/arm/mach-imx/ehci-imx25.c
new file mode 100644
index 000000000000..865daf0b09e9
--- /dev/null
+++ b/arch/arm/mach-imx/ehci-imx25.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <mach/mxc_ehci.h>
+
+#define USBCTRL_OTGBASE_OFFSET	0x600
+
+#define MX25_OTG_SIC_SHIFT	29
+#define MX25_OTG_SIC_MASK	(0x3 << MX25_OTG_SIC_SHIFT)
+#define MX25_OTG_PM_BIT		(1 << 24)
+
+#define MX25_H1_SIC_SHIFT	21
+#define MX25_H1_SIC_MASK	(0x3 << MX25_H1_SIC_SHIFT)
+#define MX25_H1_PM_BIT		(1 << 8)
+#define MX25_H1_IPPUE_UP_BIT	(1 << 7)
+#define MX25_H1_IPPUE_DOWN_BIT	(1 << 6)
+#define MX25_H1_TLL_BIT		(1 << 5)
+#define MX25_H1_USBTE_BIT	(1 << 4)
+
+int mx25_initialize_usb_hw(int port, unsigned int flags)
+{
+	unsigned int v;
+
+	v = readl(MX25_IO_ADDRESS(MX25_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
+
+	switch (port) {
+	case 0:	/* OTG port */
+		v &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PM_BIT);
+		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
+
+		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+			v |= MX25_OTG_PM_BIT;
+
+		break;
+	case 1: /* H1 port */
+		v &= ~(MX25_H1_SIC_MASK | MX25_H1_PM_BIT | MX25_H1_TLL_BIT |
+			MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT | MX25_H1_IPPUE_UP_BIT);
+		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
+
+		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+			v |= MX25_H1_PM_BIT;
+
+		if (!(flags & MXC_EHCI_TTL_ENABLED))
+			v |= MX25_H1_TLL_BIT;
+
+		if (flags & MXC_EHCI_INTERNAL_PHY)
+			v |= MX25_H1_USBTE_BIT;
+
+		if (flags & MXC_EHCI_IPPUE_DOWN)
+			v |= MX25_H1_IPPUE_DOWN_BIT;
+
+		if (flags & MXC_EHCI_IPPUE_UP)
+			v |= MX25_H1_IPPUE_UP_BIT;
+
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	writel(v, MX25_IO_ADDRESS(MX25_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
+
+	return 0;
+}
+
diff --git a/arch/arm/mach-imx/ehci-imx27.c b/arch/arm/mach-imx/ehci-imx27.c
new file mode 100644
index 000000000000..fa69419eabdd
--- /dev/null
+++ b/arch/arm/mach-imx/ehci-imx27.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <mach/mxc_ehci.h>
+
+#define USBCTRL_OTGBASE_OFFSET	0x600
+
+#define MX27_OTG_SIC_SHIFT	29
+#define MX27_OTG_SIC_MASK	(0x3 << MX27_OTG_SIC_SHIFT)
+#define MX27_OTG_PM_BIT		(1 << 24)
+
+#define MX27_H2_SIC_SHIFT	21
+#define MX27_H2_SIC_MASK	(0x3 << MX27_H2_SIC_SHIFT)
+#define MX27_H2_PM_BIT		(1 << 16)
+#define MX27_H2_DT_BIT		(1 << 5)
+
+#define MX27_H1_SIC_SHIFT	13
+#define MX27_H1_SIC_MASK	(0x3 << MX27_H1_SIC_SHIFT)
+#define MX27_H1_PM_BIT		(1 << 8)
+#define MX27_H1_DT_BIT		(1 << 4)
+
+int mx27_initialize_usb_hw(int port, unsigned int flags)
+{
+	unsigned int v;
+
+	v = readl(MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
+
+	switch (port) {
+	case 0:	/* OTG port */
+		v &= ~(MX27_OTG_SIC_MASK | MX27_OTG_PM_BIT);
+		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_OTG_SIC_SHIFT;
+
+		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+			v |= MX27_OTG_PM_BIT;
+		break;
+	case 1: /* H1 port */
+		v &= ~(MX27_H1_SIC_MASK | MX27_H1_PM_BIT | MX27_H1_DT_BIT);
+		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H1_SIC_SHIFT;
+
+		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+			v |= MX27_H1_PM_BIT;
+
+		if (!(flags & MXC_EHCI_TTL_ENABLED))
+			v |= MX27_H1_DT_BIT;
+
+		break;
+	case 2:	/* H2 port */
+		v &= ~(MX27_H2_SIC_MASK | MX27_H2_PM_BIT | MX27_H2_DT_BIT);
+		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H2_SIC_SHIFT;
+
+		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+			v |= MX27_H2_PM_BIT;
+
+		if (!(flags & MXC_EHCI_TTL_ENABLED))
+			v |= MX27_H2_DT_BIT;
+
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	writel(v, MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
+
+	return 0;
+}
+
diff --git a/arch/arm/mach-mx3/Makefile b/arch/arm/mach-mx3/Makefile
index bc7294f87011..224d07a79d7e 100644
--- a/arch/arm/mach-mx3/Makefile
+++ b/arch/arm/mach-mx3/Makefile
@@ -5,8 +5,8 @@
 # Object file lists.
 
 obj-y				:= mm.o devices.o cpu.o
-obj-$(CONFIG_SOC_IMX31)		+= clock-imx31.o iomux-imx31.o
-obj-$(CONFIG_SOC_IMX35)		+= clock-imx35.o
+obj-$(CONFIG_SOC_IMX31)		+= clock-imx31.o iomux-imx31.o ehci-imx31.o
+obj-$(CONFIG_SOC_IMX35)		+= clock-imx35.o ehci-imx35.o
 obj-$(CONFIG_MACH_MX31ADS)	+= mach-mx31ads.o
 obj-$(CONFIG_MACH_MX31LILLY)	+= mach-mx31lilly.o mx31lilly-db.o
 obj-$(CONFIG_MACH_MX31LITE)	+= mach-mx31lite.o mx31lite-db.o
diff --git a/arch/arm/mach-mx3/ehci-imx31.c b/arch/arm/mach-mx3/ehci-imx31.c
new file mode 100644
index 000000000000..314a983ac614
--- /dev/null
+++ b/arch/arm/mach-mx3/ehci-imx31.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <mach/mxc_ehci.h>
+
+#define USBCTRL_OTGBASE_OFFSET	0x600
+
+#define MX31_OTG_SIC_SHIFT	29
+#define MX31_OTG_SIC_MASK	(0x3 << MX31_OTG_SIC_SHIFT)
+#define MX31_OTG_PM_BIT		(1 << 24)
+
+#define MX31_H2_SIC_SHIFT	21
+#define MX31_H2_SIC_MASK	(0x3 << MX31_H2_SIC_SHIFT)
+#define MX31_H2_PM_BIT		(1 << 16)
+#define MX31_H2_DT_BIT		(1 << 5)
+
+#define MX31_H1_SIC_SHIFT	13
+#define MX31_H1_SIC_MASK	(0x3 << MX31_H1_SIC_SHIFT)
+#define MX31_H1_PM_BIT		(1 << 8)
+#define MX31_H1_DT_BIT		(1 << 4)
+
+int mx31_initialize_usb_hw(int port, unsigned int flags)
+{
+	unsigned int v;
+
+	v = readl(MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
+
+	switch (port) {
+	case 0:	/* OTG port */
+		v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT);
+		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_OTG_SIC_SHIFT;
+
+		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+			v |= MX31_OTG_PM_BIT;
+
+		break;
+	case 1: /* H1 port */
+		v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT | MX31_H1_DT_BIT);
+		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_H1_SIC_SHIFT;
+
+		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+			v |= MX31_H1_PM_BIT;
+
+		if (!(flags & MXC_EHCI_TTL_ENABLED))
+			v |= MX31_H1_DT_BIT;
+
+		break;
+	case 2:	/* H2 port */
+		v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT | MX31_H2_DT_BIT);
+		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_H2_SIC_SHIFT;
+
+		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+			v |= MX31_H2_PM_BIT;
+
+		if (!(flags & MXC_EHCI_TTL_ENABLED))
+			v |= MX31_H2_DT_BIT;
+
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	writel(v, MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
+
+	return 0;
+}
+
diff --git a/arch/arm/mach-mx3/ehci-imx35.c b/arch/arm/mach-mx3/ehci-imx35.c
new file mode 100644
index 000000000000..33983a478c6b
--- /dev/null
+++ b/arch/arm/mach-mx3/ehci-imx35.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <mach/mxc_ehci.h>
+
+#define USBCTRL_OTGBASE_OFFSET	0x600
+
+#define MX35_OTG_SIC_SHIFT	29
+#define MX35_OTG_SIC_MASK	(0x3 << MX35_OTG_SIC_SHIFT)
+#define MX35_OTG_PM_BIT		(1 << 24)
+
+#define MX35_H1_SIC_SHIFT	21
+#define MX35_H1_SIC_MASK	(0x3 << MX35_H1_SIC_SHIFT)
+#define MX35_H1_PM_BIT		(1 << 8)
+#define MX35_H1_IPPUE_UP_BIT	(1 << 7)
+#define MX35_H1_IPPUE_DOWN_BIT	(1 << 6)
+#define MX35_H1_TLL_BIT		(1 << 5)
+#define MX35_H1_USBTE_BIT	(1 << 4)
+
+int mx35_initialize_usb_hw(int port, unsigned int flags)
+{
+	unsigned int v;
+
+	v = readl(MX35_IO_ADDRESS(MX35_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
+
+	switch (port) {
+	case 0:	/* OTG port */
+		v &= ~(MX35_OTG_SIC_MASK | MX35_OTG_PM_BIT);
+		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX35_OTG_SIC_SHIFT;
+
+		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+			v |= MX35_OTG_PM_BIT;
+
+		break;
+	case 1: /* H1 port */
+		v &= ~(MX35_H1_SIC_MASK | MX35_H1_PM_BIT | MX35_H1_TLL_BIT |
+			MX35_H1_USBTE_BIT | MX35_H1_IPPUE_DOWN_BIT | MX35_H1_IPPUE_UP_BIT);
+		v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX35_H1_SIC_SHIFT;
+
+		if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+			v |= MX35_H1_PM_BIT;
+
+		if (!(flags & MXC_EHCI_TTL_ENABLED))
+			v |= MX35_H1_TLL_BIT;
+
+		if (flags & MXC_EHCI_INTERNAL_PHY)
+			v |= MX35_H1_USBTE_BIT;
+
+		if (flags & MXC_EHCI_IPPUE_DOWN)
+			v |= MX35_H1_IPPUE_DOWN_BIT;
+
+		if (flags & MXC_EHCI_IPPUE_UP)
+			v |= MX35_H1_IPPUE_UP_BIT;
+
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	writel(v, MX35_IO_ADDRESS(MX35_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
+
+	return 0;
+}
+
diff --git a/arch/arm/mach-mx5/Makefile b/arch/arm/mach-mx5/Makefile
index 0d43be98e51c..dc2728823fdd 100644
--- a/arch/arm/mach-mx5/Makefile
+++ b/arch/arm/mach-mx5/Makefile
@@ -3,7 +3,7 @@
 #
 
 # Object file lists.
-obj-y   := cpu.o mm.o clock-mx51-mx53.o devices.o
+obj-y   := cpu.o mm.o clock-mx51-mx53.o devices.o ehci.o
 obj-$(CONFIG_SOC_IMX50) += mm-mx50.o
 
 obj-$(CONFIG_CPU_FREQ_IMX)    += cpu_op-mx51.o
diff --git a/arch/arm/mach-mx5/ehci.c b/arch/arm/mach-mx5/ehci.c
new file mode 100644
index 000000000000..7ce12c804a32
--- /dev/null
+++ b/arch/arm/mach-mx5/ehci.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <mach/mxc_ehci.h>
+
+#define MXC_OTG_OFFSET			0
+#define MXC_H1_OFFSET			0x200
+#define MXC_H2_OFFSET			0x400
+
+/* USB_CTRL */
+#define MXC_OTG_UCTRL_OWIE_BIT		(1 << 27)	/* OTG wakeup intr enable */
+#define MXC_OTG_UCTRL_OPM_BIT		(1 << 24)	/* OTG power mask */
+#define MXC_H1_UCTRL_H1UIE_BIT		(1 << 12)	/* Host1 ULPI interrupt enable */
+#define MXC_H1_UCTRL_H1WIE_BIT		(1 << 11)	/* HOST1 wakeup intr enable */
+#define MXC_H1_UCTRL_H1PM_BIT		(1 <<  8)		/* HOST1 power mask */
+
+/* USB_PHY_CTRL_FUNC */
+#define MXC_OTG_PHYCTRL_OC_DIS_BIT	(1 << 8)	/* OTG Disable Overcurrent Event */
+#define MXC_H1_OC_DIS_BIT		(1 << 5)	/* UH1 Disable Overcurrent Event */
+
+/* USBH2CTRL */
+#define MXC_H2_UCTRL_H2UIE_BIT		(1 << 8)
+#define MXC_H2_UCTRL_H2WIE_BIT		(1 << 7)
+#define MXC_H2_UCTRL_H2PM_BIT		(1 << 4)
+
+#define MXC_USBCMD_OFFSET		0x140
+
+/* USBCMD */
+#define MXC_UCMD_ITC_NO_THRESHOLD_MASK	(~(0xff << 16))	/* Interrupt Threshold Control */
+
+int mx51_initialize_usb_hw(int port, unsigned int flags)
+{
+	unsigned int v;
+	void __iomem *usb_base;
+	void __iomem *usbotg_base;
+	void __iomem *usbother_base;
+	int ret = 0;
+
+	usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
+	if (!usb_base) {
+		printk(KERN_ERR "%s(): ioremap failed\n", __func__);
+		return -ENOMEM;
+	}
+
+	switch (port) {
+	case 0:	/* OTG port */
+		usbotg_base = usb_base + MXC_OTG_OFFSET;
+		break;
+	case 1:	/* Host 1 port */
+		usbotg_base = usb_base + MXC_H1_OFFSET;
+		break;
+	case 2: /* Host 2 port */
+		usbotg_base = usb_base + MXC_H2_OFFSET;
+		break;
+	default:
+		printk(KERN_ERR"%s no such port %d\n", __func__, port);
+		ret = -ENOENT;
+		goto error;
+	}
+	usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET;
+
+	switch (port) {
+	case 0:	/*OTG port */
+		if (flags & MXC_EHCI_INTERNAL_PHY) {
+			v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
+
+			if (flags & MXC_EHCI_POWER_PINS_ENABLED) {
+				/* OC/USBPWR is not used */
+				v |= MXC_OTG_PHYCTRL_OC_DIS_BIT;
+			} else {
+				/* OC/USBPWR is used */
+				v &= ~MXC_OTG_PHYCTRL_OC_DIS_BIT;
+			}
+			__raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
+
+			v = __raw_readl(usbother_base + MXC_USBCTRL_OFFSET);
+			if (flags & MXC_EHCI_WAKEUP_ENABLED)
+				v |= MXC_OTG_UCTRL_OWIE_BIT;/* OTG wakeup enable */
+			else
+				v &= ~MXC_OTG_UCTRL_OWIE_BIT;/* OTG wakeup disable */
+			if (flags & MXC_EHCI_POWER_PINS_ENABLED)
+				v |= MXC_OTG_UCTRL_OPM_BIT;
+			else
+				v &= ~MXC_OTG_UCTRL_OPM_BIT;
+			__raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET);
+		}
+		break;
+	case 1:	/* Host 1 */
+		/*Host ULPI */
+		v = __raw_readl(usbother_base + MXC_USBCTRL_OFFSET);
+		if (flags & MXC_EHCI_WAKEUP_ENABLED) {
+			/* HOST1 wakeup/ULPI intr enable */
+			v |= (MXC_H1_UCTRL_H1WIE_BIT | MXC_H1_UCTRL_H1UIE_BIT);
+		} else {
+			/* HOST1 wakeup/ULPI intr disable */
+			v &= ~(MXC_H1_UCTRL_H1WIE_BIT | MXC_H1_UCTRL_H1UIE_BIT);
+		}
+
+		if (flags & MXC_EHCI_POWER_PINS_ENABLED)
+			v &= ~MXC_H1_UCTRL_H1PM_BIT; /* HOST1 power mask used*/
+		else
+			v |= MXC_H1_UCTRL_H1PM_BIT; /* HOST1 power mask used*/
+		__raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET);
+
+		v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
+		if (flags & MXC_EHCI_POWER_PINS_ENABLED)
+			v &= ~MXC_H1_OC_DIS_BIT; /* OC is used */
+		else
+			v |= MXC_H1_OC_DIS_BIT; /* OC is not used */
+		__raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
+
+		v = __raw_readl(usbotg_base + MXC_USBCMD_OFFSET);
+		if (flags & MXC_EHCI_ITC_NO_THRESHOLD)
+			/* Interrupt Threshold Control:Immediate (no threshold) */
+			v &= MXC_UCMD_ITC_NO_THRESHOLD_MASK;
+		__raw_writel(v, usbotg_base + MXC_USBCMD_OFFSET);
+		break;
+	case 2: /* Host 2 ULPI */
+		v = __raw_readl(usbother_base + MXC_USBH2CTRL_OFFSET);
+		if (flags & MXC_EHCI_WAKEUP_ENABLED) {
+			/* HOST1 wakeup/ULPI intr enable */
+			v |= (MXC_H2_UCTRL_H2WIE_BIT | MXC_H2_UCTRL_H2UIE_BIT);
+		} else {
+			/* HOST1 wakeup/ULPI intr disable */
+			v &= ~(MXC_H2_UCTRL_H2WIE_BIT | MXC_H2_UCTRL_H2UIE_BIT);
+		}
+
+		if (flags & MXC_EHCI_POWER_PINS_ENABLED)
+			v &= ~MXC_H2_UCTRL_H2PM_BIT; /* HOST2 power mask used*/
+		else
+			v |= MXC_H2_UCTRL_H2PM_BIT; /* HOST2 power mask used*/
+		__raw_writel(v, usbother_base + MXC_USBH2CTRL_OFFSET);
+		break;
+	}
+
+error:
+	iounmap(usb_base);
+	return ret;
+}
+
diff --git a/arch/arm/plat-mxc/ehci.c b/arch/arm/plat-mxc/ehci.c
index 8772ce346a58..06fb3a4d7c27 100644
--- a/arch/arm/plat-mxc/ehci.c
+++ b/arch/arm/plat-mxc/ehci.c
@@ -14,352 +14,29 @@
  */
 
 #include <linux/platform_device.h>
-#include <linux/io.h>
 
 #include <mach/hardware.h>
 #include <mach/mxc_ehci.h>
 
-#define USBCTRL_OTGBASE_OFFSET	0x600
-
-#define MX31_OTG_SIC_SHIFT	29
-#define MX31_OTG_SIC_MASK	(0x3 << MX31_OTG_SIC_SHIFT)
-#define MX31_OTG_PM_BIT		(1 << 24)
-
-#define MX31_H2_SIC_SHIFT	21
-#define MX31_H2_SIC_MASK	(0x3 << MX31_H2_SIC_SHIFT)
-#define MX31_H2_PM_BIT		(1 << 16)
-#define MX31_H2_DT_BIT		(1 << 5)
-
-#define MX31_H1_SIC_SHIFT	13
-#define MX31_H1_SIC_MASK	(0x3 << MX31_H1_SIC_SHIFT)
-#define MX31_H1_PM_BIT		(1 << 8)
-#define MX31_H1_DT_BIT		(1 << 4)
-
-#define MX35_OTG_SIC_SHIFT	29
-#define MX35_OTG_SIC_MASK	(0x3 << MX35_OTG_SIC_SHIFT)
-#define MX35_OTG_PM_BIT		(1 << 24)
-
-#define MX35_H1_SIC_SHIFT	21
-#define MX35_H1_SIC_MASK	(0x3 << MX35_H1_SIC_SHIFT)
-#define MX35_H1_PM_BIT		(1 << 8)
-#define MX35_H1_IPPUE_UP_BIT	(1 << 7)
-#define MX35_H1_IPPUE_DOWN_BIT	(1 << 6)
-#define MX35_H1_TLL_BIT		(1 << 5)
-#define MX35_H1_USBTE_BIT	(1 << 4)
-
-#define MXC_OTG_OFFSET		0
-#define MXC_H1_OFFSET		0x200
-#define MXC_H2_OFFSET		0x400
-
-/* USB_CTRL */
-#define MXC_OTG_UCTRL_OWIE_BIT		(1 << 27)	/* OTG wakeup intr enable */
-#define MXC_OTG_UCTRL_OPM_BIT		(1 << 24)	/* OTG power mask */
-#define MXC_H1_UCTRL_H1UIE_BIT		(1 << 12)	/* Host1 ULPI interrupt enable */
-#define MXC_H1_UCTRL_H1WIE_BIT		(1 << 11)	/* HOST1 wakeup intr enable */
-#define MXC_H1_UCTRL_H1PM_BIT		(1 <<  8)		/* HOST1 power mask */
-
-/* USB_PHY_CTRL_FUNC */
-#define MXC_OTG_PHYCTRL_OC_DIS_BIT	(1 << 8)	/* OTG Disable Overcurrent Event */
-#define MXC_H1_OC_DIS_BIT			(1 << 5)	/* UH1 Disable Overcurrent Event */
-
-/* USBH2CTRL */
-#define MXC_H2_UCTRL_H2UIE_BIT		(1 << 8)
-#define MXC_H2_UCTRL_H2WIE_BIT		(1 << 7)
-#define MXC_H2_UCTRL_H2PM_BIT		(1 << 4)
-
-#define MXC_USBCMD_OFFSET			0x140
-
-/* USBCMD */
-#define MXC_UCMD_ITC_NO_THRESHOLD_MASK	(~(0xff << 16))	/* Interrupt Threshold Control */
-
 int mxc_initialize_usb_hw(int port, unsigned int flags)
 {
-	unsigned int v;
 #if defined(CONFIG_SOC_IMX25)
-	if (cpu_is_mx25()) {
-		v = readl(MX25_IO_ADDRESS(MX25_USB_BASE_ADDR +
-				     USBCTRL_OTGBASE_OFFSET));
-
-		switch (port) {
-		case 0:	/* OTG port */
-			v &= ~(MX35_OTG_SIC_MASK | MX35_OTG_PM_BIT);
-			v |= (flags & MXC_EHCI_INTERFACE_MASK)
-					<< MX35_OTG_SIC_SHIFT;
-			if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
-				v |= MX35_OTG_PM_BIT;
-
-			break;
-		case 1: /* H1 port */
-			v &= ~(MX35_H1_SIC_MASK | MX35_H1_PM_BIT | MX35_H1_TLL_BIT |
-				MX35_H1_USBTE_BIT | MX35_H1_IPPUE_DOWN_BIT | MX35_H1_IPPUE_UP_BIT);
-			v |= (flags & MXC_EHCI_INTERFACE_MASK)
-						<< MX35_H1_SIC_SHIFT;
-			if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
-				v |= MX35_H1_PM_BIT;
-
-			if (!(flags & MXC_EHCI_TTL_ENABLED))
-				v |= MX35_H1_TLL_BIT;
-
-			if (flags & MXC_EHCI_INTERNAL_PHY)
-				v |= MX35_H1_USBTE_BIT;
-
-			if (flags & MXC_EHCI_IPPUE_DOWN)
-				v |= MX35_H1_IPPUE_DOWN_BIT;
-
-			if (flags & MXC_EHCI_IPPUE_UP)
-				v |= MX35_H1_IPPUE_UP_BIT;
-
-			break;
-		default:
-			return -EINVAL;
-		}
-
-		writel(v, MX25_IO_ADDRESS(MX25_USB_BASE_ADDR +
-				     USBCTRL_OTGBASE_OFFSET));
-		return 0;
-	}
+	if (cpu_is_mx25())
+		return mx25_initialize_usb_hw(port, flags);
 #endif /* if defined(CONFIG_SOC_IMX25) */
 #if defined(CONFIG_ARCH_MX3)
-	if (cpu_is_mx31()) {
-		v = readl(MX31_IO_ADDRESS(MX31_USB_BASE_ADDR +
-				     USBCTRL_OTGBASE_OFFSET));
-
-		switch (port) {
-		case 0:	/* OTG port */
-			v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT);
-			v |= (flags & MXC_EHCI_INTERFACE_MASK)
-					<< MX31_OTG_SIC_SHIFT;
-			if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
-				v |= MX31_OTG_PM_BIT;
-
-			break;
-		case 1: /* H1 port */
-			v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT | MX31_H1_DT_BIT);
-			v |= (flags & MXC_EHCI_INTERFACE_MASK)
-						<< MX31_H1_SIC_SHIFT;
-			if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
-				v |= MX31_H1_PM_BIT;
-
-			if (!(flags & MXC_EHCI_TTL_ENABLED))
-				v |= MX31_H1_DT_BIT;
-
-			break;
-		case 2:	/* H2 port */
-			v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT | MX31_H2_DT_BIT);
-			v |= (flags & MXC_EHCI_INTERFACE_MASK)
-						<< MX31_H2_SIC_SHIFT;
-			if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
-				v |= MX31_H2_PM_BIT;
-
-			if (!(flags & MXC_EHCI_TTL_ENABLED))
-				v |= MX31_H2_DT_BIT;
-
-			break;
-		default:
-			return -EINVAL;
-		}
-
-		writel(v, MX31_IO_ADDRESS(MX31_USB_BASE_ADDR +
-				     USBCTRL_OTGBASE_OFFSET));
-		return 0;
-	}
-
-	if (cpu_is_mx35()) {
-		v = readl(MX35_IO_ADDRESS(MX35_USB_BASE_ADDR +
-				     USBCTRL_OTGBASE_OFFSET));
-
-		switch (port) {
-		case 0:	/* OTG port */
-			v &= ~(MX35_OTG_SIC_MASK | MX35_OTG_PM_BIT);
-			v |= (flags & MXC_EHCI_INTERFACE_MASK)
-					<< MX35_OTG_SIC_SHIFT;
-			if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
-				v |= MX35_OTG_PM_BIT;
-
-			break;
-		case 1: /* H1 port */
-			v &= ~(MX35_H1_SIC_MASK | MX35_H1_PM_BIT | MX35_H1_TLL_BIT |
-				MX35_H1_USBTE_BIT | MX35_H1_IPPUE_DOWN_BIT | MX35_H1_IPPUE_UP_BIT);
-			v |= (flags & MXC_EHCI_INTERFACE_MASK)
-						<< MX35_H1_SIC_SHIFT;
-			if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
-				v |= MX35_H1_PM_BIT;
-
-			if (!(flags & MXC_EHCI_TTL_ENABLED))
-				v |= MX35_H1_TLL_BIT;
-
-			if (flags & MXC_EHCI_INTERNAL_PHY)
-				v |= MX35_H1_USBTE_BIT;
-
-			if (flags & MXC_EHCI_IPPUE_DOWN)
-				v |= MX35_H1_IPPUE_DOWN_BIT;
-
-			if (flags & MXC_EHCI_IPPUE_UP)
-				v |= MX35_H1_IPPUE_UP_BIT;
-
-			break;
-		default:
-			return -EINVAL;
-		}
-
-		writel(v, MX35_IO_ADDRESS(MX35_USB_BASE_ADDR +
-				     USBCTRL_OTGBASE_OFFSET));
-		return 0;
-	}
+	if (cpu_is_mx31())
+		return mx31_initialize_usb_hw(port, flags);
+	if (cpu_is_mx35())
+		return mx35_initialize_usb_hw(port, flags);
 #endif /* CONFIG_ARCH_MX3 */
 #ifdef CONFIG_MACH_MX27
-	if (cpu_is_mx27()) {
-		/* On i.MX27 we can use the i.MX31 USBCTRL bits, they
-		 * are identical
-		 */
-		v = readl(MX27_IO_ADDRESS(MX27_USB_BASE_ADDR +
-				     USBCTRL_OTGBASE_OFFSET));
-		switch (port) {
-		case 0:	/* OTG port */
-			v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT);
-			v |= (flags & MXC_EHCI_INTERFACE_MASK)
-					<< MX31_OTG_SIC_SHIFT;
-			if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
-				v |= MX31_OTG_PM_BIT;
-			break;
-		case 1: /* H1 port */
-			v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT | MX31_H1_DT_BIT);
-			v |= (flags & MXC_EHCI_INTERFACE_MASK)
-						<< MX31_H1_SIC_SHIFT;
-			if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
-				v |= MX31_H1_PM_BIT;
-
-			if (!(flags & MXC_EHCI_TTL_ENABLED))
-				v |= MX31_H1_DT_BIT;
-
-			break;
-		case 2:	/* H2 port */
-			v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT | MX31_H2_DT_BIT);
-			v |= (flags & MXC_EHCI_INTERFACE_MASK)
-						<< MX31_H2_SIC_SHIFT;
-			if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
-				v |= MX31_H2_PM_BIT;
-
-			if (!(flags & MXC_EHCI_TTL_ENABLED))
-				v |= MX31_H2_DT_BIT;
-
-			break;
-		default:
-			return -EINVAL;
-		}
-		writel(v, MX27_IO_ADDRESS(MX27_USB_BASE_ADDR +
-				     USBCTRL_OTGBASE_OFFSET));
-		return 0;
-	}
+	if (cpu_is_mx27())
+		return mx27_initialize_usb_hw(port, flags);
 #endif /* CONFIG_MACH_MX27 */
 #ifdef CONFIG_SOC_IMX51
-	if (cpu_is_mx51()) {
-		void __iomem *usb_base;
-		void __iomem *usbotg_base;
-		void __iomem *usbother_base;
-		int ret = 0;
-
-		usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
-		if (!usb_base) {
-			printk(KERN_ERR "%s(): ioremap failed\n", __func__);
-			return -ENOMEM;
-		}
-
-		switch (port) {
-		case 0:	/* OTG port */
-			usbotg_base = usb_base + MXC_OTG_OFFSET;
-			break;
-		case 1:	/* Host 1 port */
-			usbotg_base = usb_base + MXC_H1_OFFSET;
-			break;
-		case 2: /* Host 2 port */
-			usbotg_base = usb_base + MXC_H2_OFFSET;
-			break;
-		default:
-			printk(KERN_ERR"%s no such port %d\n", __func__, port);
-			ret = -ENOENT;
-			goto error;
-		}
-		usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET;
-
-		switch (port) {
-		case 0:	/*OTG port */
-			if (flags & MXC_EHCI_INTERNAL_PHY) {
-				v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
-
-				if (flags & MXC_EHCI_POWER_PINS_ENABLED) {
-					/* OC/USBPWR is not used */
-					v |= MXC_OTG_PHYCTRL_OC_DIS_BIT;
-				} else {
-					/* OC/USBPWR is used */
-					v &= ~MXC_OTG_PHYCTRL_OC_DIS_BIT;
-				}
-				__raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
-
-				v = __raw_readl(usbother_base + MXC_USBCTRL_OFFSET);
-				if (flags & MXC_EHCI_WAKEUP_ENABLED)
-					v |= MXC_OTG_UCTRL_OWIE_BIT;/* OTG wakeup enable */
-				else
-					v &= ~MXC_OTG_UCTRL_OWIE_BIT;/* OTG wakeup disable */
-				if (flags & MXC_EHCI_POWER_PINS_ENABLED)
-					v |= MXC_OTG_UCTRL_OPM_BIT;
-				else
-					v &= ~MXC_OTG_UCTRL_OPM_BIT;
-				__raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET);
-			}
-			break;
-		case 1:	/* Host 1 */
-			/*Host ULPI */
-			v = __raw_readl(usbother_base + MXC_USBCTRL_OFFSET);
-			if (flags & MXC_EHCI_WAKEUP_ENABLED) {
-				/* HOST1 wakeup/ULPI intr enable */
-				v |= (MXC_H1_UCTRL_H1WIE_BIT | MXC_H1_UCTRL_H1UIE_BIT);
-			} else {
-				/* HOST1 wakeup/ULPI intr disable */
-				v &= ~(MXC_H1_UCTRL_H1WIE_BIT | MXC_H1_UCTRL_H1UIE_BIT);
-			}
-
-			if (flags & MXC_EHCI_POWER_PINS_ENABLED)
-				v &= ~MXC_H1_UCTRL_H1PM_BIT; /* HOST1 power mask used*/
-			else
-				v |= MXC_H1_UCTRL_H1PM_BIT; /* HOST1 power mask used*/
-			__raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET);
-
-			v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
-			if (flags & MXC_EHCI_POWER_PINS_ENABLED)
-				v &= ~MXC_H1_OC_DIS_BIT; /* OC is used */
-			else
-				v |= MXC_H1_OC_DIS_BIT; /* OC is not used */
-			__raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
-
-			v = __raw_readl(usbotg_base + MXC_USBCMD_OFFSET);
-			if (flags & MXC_EHCI_ITC_NO_THRESHOLD)
-				/* Interrupt Threshold Control:Immediate (no threshold) */
-				v &= MXC_UCMD_ITC_NO_THRESHOLD_MASK;
-			__raw_writel(v, usbotg_base + MXC_USBCMD_OFFSET);
-			break;
-		case 2: /* Host 2 ULPI */
-			v = __raw_readl(usbother_base + MXC_USBH2CTRL_OFFSET);
-			if (flags & MXC_EHCI_WAKEUP_ENABLED) {
-				/* HOST1 wakeup/ULPI intr enable */
-				v |= (MXC_H2_UCTRL_H2WIE_BIT | MXC_H2_UCTRL_H2UIE_BIT);
-			} else {
-				/* HOST1 wakeup/ULPI intr disable */
-				v &= ~(MXC_H2_UCTRL_H2WIE_BIT | MXC_H2_UCTRL_H2UIE_BIT);
-			}
-
-			if (flags & MXC_EHCI_POWER_PINS_ENABLED)
-				v &= ~MXC_H2_UCTRL_H2PM_BIT; /* HOST2 power mask used*/
-			else
-				v |= MXC_H2_UCTRL_H2PM_BIT; /* HOST2 power mask used*/
-			__raw_writel(v, usbother_base + MXC_USBH2CTRL_OFFSET);
-			break;
-		}
-
-error:
-		iounmap(usb_base);
-		return ret;
-	}
+	if (cpu_is_mx51())
+		return mx51_initialize_usb_hw(port, flags);
 #endif
 	printk(KERN_WARNING
 		"%s() unable to setup USBCONTROL for this CPU\n", __func__);
diff --git a/arch/arm/plat-mxc/include/mach/mxc_ehci.h b/arch/arm/plat-mxc/include/mach/mxc_ehci.h
index a523a4079299..7e555a1f4a4a 100644
--- a/arch/arm/plat-mxc/include/mach/mxc_ehci.h
+++ b/arch/arm/plat-mxc/include/mach/mxc_ehci.h
@@ -50,5 +50,11 @@ struct mxc_usbh_platform_data {
 
 int mxc_initialize_usb_hw(int port, unsigned int flags);
 
+int mx51_initialize_usb_hw(int port, unsigned int flags);
+int mx25_initialize_usb_hw(int port, unsigned int flags);
+int mx31_initialize_usb_hw(int port, unsigned int flags);
+int mx35_initialize_usb_hw(int port, unsigned int flags);
+int mx27_initialize_usb_hw(int port, unsigned int flags);
+
 #endif /* __INCLUDE_ASM_ARCH_MXC_EHCI_H */