[PATCH 9/9 v1.02] Add Synopsys DesignWare HS USB OTG Controller driver.

[Fushen Chen <fchen@xxxxxxx>]

Interfaces with the DWC HS OTG core by reading from and writing to
the Control and Status Register (CSR).

CSRs are classified as follows:
 - Core Global Registers
 - Device Mode Registers
 - Device Global Registers
 - Device Endpoint Specific Registers
 - Host Mode Registers
 - Host Global Registers
 - Host Port CSRs
 - Host Channel Specific Registers

Signed-off-by: Fushen Chen <fchen@xxxxxxx>
Signed-off-by: Mark Miesfeld <mmiesfeld@xxxxxxx>
---
 drivers/usb/dwc_otg/dwc_otg_regs.h | 3283 ++++++++++++++++++++++++++++++++++++
 1 files changed, 3283 insertions(+), 0 deletions(-)
 create mode 100644 drivers/usb/dwc_otg/dwc_otg_regs.h

diff --git a/drivers/usb/dwc_otg/dwc_otg_regs.h b/drivers/usb/dwc_otg/dwc_otg_regs.h
new file mode 100644
index 0000000..0f31dd5
--- /dev/null
+++ b/drivers/usb/dwc_otg/dwc_otg_regs.h
@@ -0,0 +1,3283 @@
+/*
+ * DesignWare HS OTG controller driver
+ *
+ * Author: Mark Miesfeld <mmiesfeld@xxxxxxx>
+ *
+ * Based on versions provided by APM and Synopsis which are:
+ *	Copyright (C) 2009-2010 AppliedMicro(www.apm.com)
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __DWC_OTG_REGS_H__
+#define __DWC_OTG_REGS_H__
+
+#include <linux/types.h>
+
+/*
+ * This file contains the data structures for accessing the DWC_otg core
+ * registers.
+ *
+ * The application interfaces with the HS OTG core by reading from and
+ * writing to the Control and Status Register (CSR) space through the
+ * AHB Slave interface. These registers are 32 bits wide, and the
+ * addresses are 32-bit-block aligned.
+ * CSRs are classified as follows:
+ * - Core Global Registers
+ * - Device Mode Registers
+ * - Device Global Registers
+ * - Device Endpoint Specific Registers
+ * - Host Mode Registers
+ * - Host Global Registers
+ * - Host Port CSRs
+ * - Host Channel Specific Registers
+ *
+ * Only the Core Global registers can be accessed in both Device and
+ * Host modes. When the HS OTG core is operating in one mode, either
+ * Device or Host, the application must not access registers from the
+ * other mode. When the core switches from one mode to another, the
+ * registers in the new mode of operation must be reprogrammed as they
+ * would be after a power-on reset.
+ */
+
+/*
+ * DWC_otg Core registers.  The core_global_regs structure defines the
+ * size and relative field offsets for the Core Global registers.
+ */
+struct core_global_regs {
+	/* OTG Control and Status Register.		Offset: 000h */
+	u32 gotgctl;
+	/* OTG Interrupt Register.			Offset: 004h */
+	u32 gotgint;
+	/* Core AHB Configuration Register.		Offset: 008h */
+	u32 gahbcfg;
+
+#define DWC_GLBINTRMASK				0x0001
+#define DWC_DMAENABLE				0x0020
+#define DWC_NPTXEMPTYLVL_EMPTY			0x0080
+#define DWC_NPTXEMPTYLVL_HALFEMPTY		0x0000
+#define DWC_PTXEMPTYLVL_EMPTY			0x0100
+#define DWC_PTXEMPTYLVL_HALFEMPTY		0x0000
+
+	/* Core USB Configuration Register.		Offset: 00Ch */
+	u32 gusbcfg;
+	/* Core Reset Register.				Offset: 010h */
+	u32 grstctl;
+	/* Core Interrupt Register.			Offset: 014h */
+	u32 gintsts;
+	/* Core Interrupt Mask Register.		Offset: 018h */
+	u32 gintmsk;
+	/*
+	 * Receive Status Queue Read Register
+	 * (Read Only)					Offset: 01Ch
+	 */
+	u32 grxstsr;
+	/*
+	 * Receive Status Queue Read & POP Register
+	 * (Read Only)					Offset: 020h
+	 */
+	u32 grxstsp;
+	/* Receive FIFO Size Register.			Offset: 024h */
+	u32 grxfsiz;
+	/* Non Periodic Transmit FIFO Size Register.	Offset: 028h */
+	u32 gnptxfsiz;
+	/*
+	 * Non Periodic Transmit FIFO/Queue Status Register
+	 * (Read Only).					Offset: 02Ch
+	 */
+	u32 gnptxsts;
+	/* I2C Access Register.				Offset: 030h */
+	u32 gi2cctl;
+	/* PHY Vendor Control Register.			Offset: 034h */
+	u32 gpvndctl;
+	/* General Purpose Input/Output Register.	Offset: 038h */
+	u32 ggpio;
+	/* User ID Register.				Offset: 03Ch */
+	u32 guid;
+	/* Synopsys ID Register (Read Only).		Offset: 040h */
+	u32 gsnpsid;
+	/* User HW Config1 Register (Read Only).	Offset: 044h */
+	u32 ghwcfg1;
+	/* User HW Config2 Register (Read Only).	Offset: 048h */
+	u32 ghwcfg2;
+#define DWC_SLAVE_ONLY_ARCH			0
+#define DWC_EXT_DMA_ARCH			1
+#define DWC_INT_DMA_ARCH			2
+
+#define DWC_MODE_HNP_SRP_CAPABLE		0
+#define DWC_MODE_SRP_ONLY_CAPABLE		1
+#define DWC_MODE_NO_HNP_SRP_CAPABLE		2
+#define DWC_MODE_SRP_CAPABLE_DEVICE		3
+#define DWC_MODE_NO_SRP_CAPABLE_DEVICE		4
+#define DWC_MODE_SRP_CAPABLE_HOST		5
+#define DWC_MODE_NO_SRP_CAPABLE_HOST		6
+
+	/* User HW Config3 Register (Read Only).	Offset: 04Ch */
+	u32 ghwcfg3;
+	/* User HW Config4 Register (Read Only).	Offset: 050h */
+	u32 ghwcfg4;
+	/*  Reserved					Offset: 054h-0FFh */
+	u32 reserved[43];
+	/*  Host Periodic Transmit FIFO Size Register.	Offset: 100h */
+	u32 hptxfsiz;
+
+	/*
+	 * Device Periodic Transmit FIFO#n Register, if dedicated fifos are
+	 * disabled.  Otherwise Device Transmit FIFO#n Register.
+	 *
+	 * Offset: 104h + (FIFO_Number-1)*04h, 1 <= FIFO Number <= 15 (1<=n<=15)
+	 */
+	u32 dptxfsiz_dieptxf[15];
+};
+
+
+#if defined(CONFIG_DWC_OTG_REG_LE)
+/*
+ * This union represents the bit fields of the Core OTG Controland Status
+ * Register (GOTGCTL).  Set the bits using the bit fields then write the d32
+ * value to the register.
+ */
+union gotgctl_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved31_21:11;
+		unsigned currmod:1;
+		unsigned bsesvld:1;
+		unsigned asesvld:1;
+		unsigned reserved17:1;
+		unsigned conidsts:1;
+		unsigned reserved1_12:4;
+		unsigned devhnpen:1;
+		unsigned hstsethnpen:1;
+		unsigned hnpreq:1;
+		unsigned hstnegscs:1;
+		unsigned reserved07_02:6;
+		unsigned sesreq:1;
+		unsigned sesreqscs:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields of the Core OTG Interrupt Register
+ * (GOTGINT).  Set/clear the bits using the bit fields then write the d32
+ * value to the register.
+ */
+union gotgint_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		/* Current Mode */
+		unsigned reserved31_20:12;
+		/* Debounce Done */
+		unsigned debdone:1;
+		/* A-Device Timeout Change */
+		unsigned adevtoutchng:1;
+		/* Host Negotiation Detected */
+		unsigned hstnegdet:1;
+		unsigned reserver16_10:7;
+		/* Host Negotiation Success Status Change */
+		unsigned hstnegsucstschng:1;
+		/* Session Request Success Status Change */
+		unsigned sesreqsucstschng:1;
+		unsigned reserved3_7:5;
+		/* Session End Detected */
+		unsigned sesenddet:1;
+		unsigned reserved01_00:2;
+	} b;
+};
+
+/*
+ * This union represents the bit fields of the Core AHB Configuration Register
+ * (GAHBCFG).  Set/clear the bits using the bit fields then write the d32 value
+ * to the register.
+ */
+union gahbcfg_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved9_31:23;
+		unsigned ptxfemplvl:1;
+#define DWC_GAHBCFG_TXFEMPTYLVL_EMPTY		1
+#define DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY	0
+
+		unsigned nptxfemplvl_txfemplvl:1;
+		unsigned reserved:1;
+		unsigned dmaenable:1;
+#define DWC_GAHBCFG_DMAENABLE			1
+
+		unsigned hburstlen:4;
+#define DWC_GAHBCFG_INT_DMA_BURST_SINGLE	0
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR		1
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR4	3
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR8	5
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR16	7
+
+		unsigned glblintrmsk:1;
+#define DWC_GAHBCFG_GLBINT_ENABLE		1
+	} b;
+};
+
+/*
+ * This union represents the bit fields of the Core USB Configuration Register
+ * (GUSBCFG).  Set the bits using the bit fields then write the d32 value to the
+ * register.
+ */
+union gusbcfg_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned corrupt_tx_packet:1;
+		unsigned force_device_mode:1;
+		unsigned force_host_mode:1;
+		unsigned reserved23_28:6;
+		unsigned term_sel_dl_pulse:1;
+		unsigned ulpi_int_vbus_indicator:1;
+		unsigned ulpi_ext_vbus_drv:1;
+		unsigned ulpi_clk_sus_m:1;
+		unsigned ulpi_auto_res:1;
+		unsigned ulpi_fsls:1;
+
+		unsigned otgutmifssel:1;
+		unsigned phylpwrclksel:1;
+		unsigned nptxfrwnden:1;
+		unsigned usbtrdtim:4;
+		unsigned hnpcap:1;
+		unsigned srpcap:1;
+		unsigned ddrsel:1;
+		unsigned physel:1;
+		unsigned fsintf:1;
+		unsigned ulpi_utmi_sel:1;
+		unsigned phyif:1;
+		unsigned toutcal:3;
+	} b;
+};
+
+/*
+ * This union represents the bit fields of the Core Reset Register (GRSTCTL).
+ * Set/clear the bits using the bit fields then write the d32 value to the
+ * register.
+ */
+union grstctl_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		/*
+		 *  AHB Master Idle.  Indicates the AHB Master State Machine is
+		 *  in IDLE condition.
+		 */
+		unsigned ahbidle:1;
+
+		/*
+		 * DMA Request Signal.  Indicated DMA request is in probress.
+		   Used for debug purpose.
+		 */
+		unsigned dmareq:1;
+
+		/* Reserved */
+		unsigned reserved29_11:19;
+
+		/*
+		 * TxFIFO Number (TxFNum) (Device and Host).
+		 *
+		 * This is the FIFO number which needs to be flushed,
+		 * using the TxFIFO Flush bit. This field should not
+		 * be changed until the TxFIFO Flush bit is cleared by
+		 * the core.
+		 *   - 0x0:Non Periodic TxFIFO Flush
+		 *   - 0x1 : Periodic TxFIFO #1 Flush in device mode
+		 *     or Periodic TxFIFO in host mode
+		 *   - 0x2 : Periodic TxFIFO #2 Flush in device mode.
+		 *   - ...
+		 *   - 0xF : Periodic TxFIFO #15 Flush in device mode
+		 *   - 0x10: Flush all the Transmit NonPeriodic and
+		 *     Transmit Periodic FIFOs in the core
+		 */
+		unsigned txfnum:5;
+#define DWC_GRSTCTL_TXFNUM_ALL			0x10
+
+		/*
+		 * TxFIFO Flush (TxFFlsh) (Device and Host).
+		 *
+		 * This bit is used to selectively flush a single or all
+		 * transmit FIFOs.  The application must first ensure that the
+		 * core is not in the middle of a transaction.
+		 *
+		 * The application should write into this bit, only after
+		 * making sure that neither the DMA engine is writing into the
+		 * TxFIFO nor the MAC is reading the data out of the FIFO.
+		 *
+		 * The application should wait until the core clears this bit,
+		 * before performing any operations. This bit will takes 8
+		 * clocks (slowest of PHY or AHB clock) to clear.
+		 */
+		unsigned txfflsh:1;
+
+		/*
+		 * RxFIFO Flush (RxFFlsh) (Device and Host)
+		 *
+		 * The application can flush the entire Receive FIFO using this
+		 * bit.
+		 *
+		 * The application must first ensure that the core is not in the
+		 * middle of a transaction.
+		 *
+		 * The application should write into this bit, only after making
+		 * sure that neither the DMA engine is reading from the RxFIFO
+		 * nor the MAC is writing the data in to the FIFO.
+		 *
+		 * The application should wait until the bit is cleared before
+		 * performing any other operations. This bit will takes 8 clocks
+		 * (slowest of PHY or AHB clock) to clear.
+		 */
+		unsigned rxfflsh:1;
+
+		/*
+		 * In Token Sequence Learning Queue Flush
+		 * (INTknQFlsh) (Device Only)
+		 */
+		unsigned intknqflsh:1;
+
+		/*
+		 * Host Frame Counter Reset (Host Only)<br>
+		 *
+		 * The application can reset the (micro)frame number
+		 * counter inside the core, using this bit. When the
+		 * (micro)frame counter is reset, the subsequent SOF
+		 * sent out by the core, will have a (micro)frame
+		 * number of 0.
+		 */
+		unsigned hstfrm:1;
+
+		/*
+		 * Hclk Soft Reset
+		 *
+		 * The application uses this bit to reset the control logic in
+		 * the AHB clock domain. Only AHB clock domain pipelines are
+		 * reset.
+		 */
+		unsigned hsftrst:1;
+
+		/*
+		 * Core Soft Reset (CSftRst) (Device and Host)
+		 *
+		 * The application can flush the control logic in the
+		 * entire core using this bit. This bit resets the
+		 * pipelines in the AHB Clock domain as well as the
+		 * PHY Clock domain.
+		 *
+		 * The state machines are reset to an IDLE state, the
+		 * control bits in the CSRs are cleared, all the
+		 * transmit FIFOs and the receive FIFO are flushed.
+		 *
+		 * The status mask bits that control the generation of
+		 * the interrupt, are cleared, to clear the
+		 * interrupt. The interrupt status bits are not
+		 * cleared, so the application can get the status of
+		 * any events that occurred in the core after it has
+		 * set this bit.
+		 *
+		 * Any transactions on the AHB are terminated as soon
+		 * as possible following the protocol. Any
+		 * transactions on the USB are terminated immediately.
+		 *
+		 * The configuration settings in the CSRs are
+		 * unchanged, so the software doesn't have to
+		 * reprogram these registers (Device
+		 * Configuration/Host Configuration/Core System
+		 * Configuration/Core PHY Configuration).
+		 *
+		 * The application can write to this bit, any time it
+		 * wants to reset the core. This is a self clearing
+		 * bit and the core clears this bit after all the
+		 * necessary logic is reset in the core, which may
+		 * take several clocks, depending on the current state
+		 * of the core.
+		 */
+		unsigned csftrst:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields of the Core Interrupt Mask Register
+ * (GINTMSK).  Set/clear the bits using the bit fields then write the d32 value
+ * to the register.
+ */
+union gintmsk_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned wkupintr:1;
+		unsigned sessreqintr:1;
+		unsigned disconnect:1;
+		unsigned conidstschng:1;
+		unsigned reserved27:1;
+		unsigned ptxfempty:1;
+		unsigned hcintr:1;
+		unsigned portintr:1;
+		unsigned reserved23_22:2;
+		unsigned incomplisoout:1;
+		unsigned incomplisoin:1;
+		unsigned outepintr:1;
+		unsigned inepintr:1;
+		unsigned epmismatch:1;
+		unsigned reserved16:1;
+		unsigned eopframe:1;
+		unsigned isooutdrop:1;
+		unsigned enumdone:1;
+		unsigned usbreset:1;
+		unsigned usbsuspend:1;
+		unsigned erlysuspend:1;
+		unsigned i2cintr:1;
+		unsigned reserved08:1;
+		unsigned goutnakeff:1;
+		unsigned ginnakeff:1;
+		unsigned nptxfempty:1;
+		unsigned rxstsqlvl:1;
+		unsigned sofintr:1;
+		unsigned otgintr:1;
+		unsigned modemismatch:1;
+		unsigned reserved00:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields of the Core Interrupt Register
+ * (GINTSTS).  Set/clear the bits using the bit fields then write the d32 value
+ * to the register.
+ */
+union gintsts_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+#define DWC_SOF_INTR_MASK			0x0008
+	struct {
+#define DWC_HOST_MODE				1
+		unsigned wkupintr:1;
+		unsigned sessreqintr:1;
+		unsigned disconnect:1;
+		unsigned conidstschng:1;
+		unsigned reserved27:1;
+		unsigned ptxfempty:1;
+		unsigned hcintr:1;
+		unsigned portintr:1;
+		unsigned reserved22_23:2;
+		unsigned incomplisoout:1;
+		unsigned incomplisoin:1;
+		unsigned outepintr:1;
+		unsigned inepint:1;
+		unsigned epmismatch:1;
+		unsigned intokenrx:1;
+		unsigned eopframe:1;
+		unsigned isooutdrop:1;
+		unsigned enumdone:1;
+		unsigned usbreset:1;
+		unsigned usbsuspend:1;
+		unsigned erlysuspend:1;
+		unsigned i2cintr:1;
+		unsigned reserved8:1;
+		unsigned goutnakeff:1;
+		unsigned ginnakeff:1;
+		unsigned nptxfempty:1;
+		unsigned rxstsqlvl:1;
+		unsigned sofintr:1;
+		unsigned otgintr:1;
+		unsigned modemismatch:1;
+		unsigned curmode:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device Receive Status Read and
+ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the d32
+ * element then read out the bits using the bit elements.
+ */
+union device_grxsts_data {			/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved:7;
+		unsigned fn:4;
+		unsigned pktsts:4;
+#define DWC_STS_DATA_UPDT		0x2  /* OUT Data Packet */
+#define DWC_STS_XFER_COMP		0x3  /* OUT Data Transfer Complete */
+#define DWC_DSTS_GOUT_NAK		0x1  /* Global OUT NAK */
+#define DWC_DSTS_SETUP_COMP		0x4  /* Setup Phase Complete */
+#define DWC_DSTS_SETUP_UPDT		0x6  /* SETUP Packet */
+
+		unsigned dpid:2;
+		unsigned bcnt:11;
+		unsigned epnum:4;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host Receive Status Read and
+ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the d32
+ * element then read out the bits using the bit elements.
+ */
+union host_grxsts_data {			/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved31_21:11;
+		unsigned pktsts:4;
+#define DWC_GRXSTS_PKTSTS_IN			0x2
+#define DWC_GRXSTS_PKTSTS_IN_XFER_COMP		0x3
+#define DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR	0x5
+#define DWC_GRXSTS_PKTSTS_CH_HALTED		0x7
+
+		unsigned dpid:2;
+		unsigned bcnt:11;
+		unsigned chnum:4;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the FIFO Size Registers (HPTXFSIZ,
+ * GNPTXFSIZ, DPTXFSIZn). Read the register into the d32 element then
+ * read out the bits using the bit elements.
+ */
+union fifosize_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned depth:16;
+		unsigned startaddr:16;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Non-Periodic Transmit FIFO/Queue
+ * Status Register (GNPTXSTS). Read the register into the d32 element then read
+ * out the bits using the bit elements.
+ */
+union gnptxsts_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved:1;
+		/* Top of the Non-Periodic Transmit Request Queue
+		 *  - bits 30:27 - Channel/EP Number
+		 *  - bits 26:25 - Token Type
+		 *    - 2'b00 - IN/OUT
+		 *    - 2'b01 - Zero Length OUT
+		 *    - 2'b10 - PING/Complete Split
+		 *    - 2'b11 - Channel Halt
+		 *  - bit 24 - Terminate (Last entry for the selected
+		 *    channel/EP)
+		 */
+		unsigned nptxqtop_chnep:4;
+		unsigned nptxqtop_token:2;
+		unsigned nptxqtop_terminate:1;
+		unsigned nptxqspcavail:8;
+		unsigned nptxfspcavail:16;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Transmit	FIFO Status Register
+ * (DTXFSTS). Read the register into the d32 element then read out the bits
+ * using the bit elements.
+ */
+union dtxfsts_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved:16;
+		unsigned txfspcavail:16;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the I2C Control Register (I2CCTL).
+ * Read the register into the d32 element then read out the bits using the bit
+ * elements.
+ */
+union gi2cctl_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned bsydne:1;
+		unsigned rw:1;
+		unsigned reserved:2;
+		unsigned i2cdevaddr:2;
+		unsigned i2csuspctl:1;
+		unsigned ack:1;
+		unsigned i2cen:1;
+		unsigned addr:7;
+		unsigned regaddr:8;
+		unsigned rwdata:8;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the User HW Config1 Register.  Read
+ * the register into the d32 element then read out the bits using the bit
+ * elements.
+ */
+union hwcfg1_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned ep_dir15:2;
+		unsigned ep_dir14:2;
+		unsigned ep_dir13:2;
+		unsigned ep_dir12:2;
+		unsigned ep_dir11:2;
+		unsigned ep_dir10:2;
+		unsigned ep_dir9:2;
+		unsigned ep_dir8:2;
+		unsigned ep_dir7:2;
+		unsigned ep_dir6:2;
+		unsigned ep_dir5:2;
+		unsigned ep_dir4:2;
+		unsigned ep_dir3:2;
+		unsigned ep_dir2:2;
+		unsigned ep_dir1:2;
+		unsigned ep_dir0:2;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the User HW Config2 Register.  Read
+ * the register into the d32 element then read out the bits using the bit
+ * elements.
+ */
+union hwcfg2_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		/* GHWCFG2 */
+		unsigned reserved31:1;
+		unsigned dev_token_q_depth:5;
+		unsigned host_perio_tx_q_depth:2;
+		unsigned nonperio_tx_q_depth:2;
+		unsigned rx_status_q_depth:2;
+		unsigned dynamic_fifo:1;
+		unsigned perio_ep_supported:1;
+		unsigned num_host_chan:4;
+		unsigned num_dev_ep:4;
+		unsigned fs_phy_type:2;
+		unsigned hs_phy_type:2;
+#define DWC_HWCFG2_HS_PHY_TYPE_NOT_SUPPORTED		0
+#define DWC_HWCFG2_HS_PHY_TYPE_UTMI			1
+#define DWC_HWCFG2_HS_PHY_TYPE_ULPI			2
+#define DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI		3
+
+		unsigned point2point:1;
+		unsigned architecture:2;
+		unsigned op_mode:3;
+#define DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG		0
+#define DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG		1
+#define DWC_HWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE_OTG	2
+#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE		3
+#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE	4
+#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST		5
+#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST		6
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the User HW Config3 Register.  Read
+ * the register into the d32 element then read out the bits using the bit
+ * elements.
+ */
+union hwcfg3_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		/* GHWCFG3 */
+		unsigned dfifo_depth:16;
+		unsigned reserved15_13:3;
+		unsigned ahb_phy_clock_synch:1;
+		unsigned synch_reset_type:1;
+		unsigned optional_features:1;
+		unsigned vendor_ctrl_if:1;
+		unsigned i2c:1;
+		unsigned otg_func:1;
+		unsigned packet_size_cntr_width:3;
+		unsigned xfer_size_cntr_width:4;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the User HW Config4 Register.  Read
+ * the register into the d32 element then read out the bits using the bit
+ * elements.
+ */
+union hwcfg4_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved31_30:2;
+		unsigned num_in_eps:4;
+		unsigned ded_fifo_en:1;
+
+		unsigned session_end_filt_en:1;
+		unsigned b_valid_filt_en:1;
+		unsigned a_valid_filt_en:1;
+		unsigned vbus_valid_filt_en:1;
+		unsigned iddig_filt_en:1;
+		unsigned num_dev_mode_ctrl_ep:4;
+		unsigned utmi_phy_data_width:2;
+		unsigned min_ahb_freq:9;
+		unsigned power_optimiz:1;
+		unsigned num_dev_perio_in_ep:4;
+	} b;
+};
+
+/*
+ * Device Global Registers. Offsets 800h-BFFh
+ *
+ * The following structures define the size and relative field offsets for the
+ * Device Mode Registers.
+ *
+ * These registers are visible only in Device mode and must not be accessed in
+ * Host mode, as the results are unknown.
+ */
+struct device_global_regs {		/* CONFIG_DWC_OTG_REG_LE */
+	/* Device Configuration Register.			Offset: 800h */
+	u32 dcfg;
+	/* Device Control Register.				Offset: 804h */
+	u32 dctl;
+	/* Device Status Register (Read Only).			Offset: 808h */
+	u32 dsts;
+	/* Reserved.						Offset: 80Ch */
+	u32 unused;
+	/* Device IN Endpoint Common Interrupt Mask Register.	Offset: 810h */
+	u32 diepmsk;
+	/* Device OUT Endpoint Common Interrupt Mask Register.	Offset: 814h */
+	u32 doepmsk;
+	/* Device All Endpoints Interrupt Register.		Offset: 818h */
+	u32 daint;
+	/* Device All Endpoints Interrupt Mask Register.	Offset: 81Ch */
+	u32 daintmsk;
+	/* Device IN Token Queue Read Register-1 (Read Only).	Offset: 820h */
+	u32 dtknqr1;
+	/* Device IN Token Queue Read Register-2 (Read Only).	Offset: 824h */
+	u32 dtknqr2;
+	/* Device VBUS  discharge Register.			Offset: 828h */
+	u32 dvbusdis;
+	/* Device VBUS Pulse Register.				Offset: 82Ch */
+	u32 dvbuspulse;
+	/* Device IN Token Queue Read Register-3 (Read Only).	Offset: 830h */
+	u32 dtknqr3_dthrctl;
+	/* Device IN Token Queue Read Register-4 (Read Only).	Offset: 834h */
+	u32 dtknqr4_fifoemptymsk;
+};
+
+/*
+ * This union represents the bit fields in the Device Configuration
+ * Register.  Read the register into the d32 member then
+ * set/clear the bits using the bit elements.  Write the
+ * d32 member to the dcfg register.
+ */
+union dcfg_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved0_8:9;
+		unsigned epmscnt:5;
+		/* In Endpoint Mis-match count */
+		unsigned reserved17_13:5;
+		/* Periodic Frame Interval */
+		unsigned perfrint:2;
+#define DWC_DCFG_FRAME_INTERVAL_80		0
+#define DWC_DCFG_FRAME_INTERVAL_85		1
+#define DWC_DCFG_FRAME_INTERVAL_90		2
+#define DWC_DCFG_FRAME_INTERVAL_95		3
+
+		/* Device Addresses */
+		unsigned devaddr:7;
+		unsigned reserved3:1;
+		/* Non Zero Length Status OUT Handshake */
+		unsigned nzstsouthshk:1;
+#define DWC_DCFG_SEND_STALL			1
+
+		/* Device Speed */
+		unsigned devspd:2;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device Control Register.  Read
+ * the register into the d32 member then set/clear the bits using the bit
+ * elements.
+ */
+union dctl_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved31_12:21;
+		/* Clear Global OUT NAK */
+		unsigned cgoutnak:1;
+		/* Set Global OUT NAK */
+		unsigned sgoutnak:1;
+		/* Clear Global Non-Periodic IN NAK */
+		unsigned cgnpinnak:1;
+		/* Set Global Non-Periodic IN NAK */
+		unsigned sgnpinnak:1;
+		/* Test Control */
+		unsigned tstctl:3;
+		/* Global OUT NAK Status */
+		unsigned goutnaksts:1;
+		/* Global Non-Periodic IN NAK Status */
+		unsigned gnpinnaksts:1;
+		/* Soft Disconnect */
+		unsigned sftdiscon:1;
+		/* Remote Wakeup */
+		unsigned rmtwkupsig:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device Status Register.  Read the
+ * register into the d32 member then set/clear the bits using the bit elements.
+ */
+union dsts_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved31_22:10;
+		/* Frame or Microframe Number of the received SOF */
+		unsigned soffn:14;
+		unsigned reserved07_04:4;
+		/* Erratic Error */
+		unsigned errticerr:1;
+		/* Enumerated Speed */
+		unsigned enumspd:2;
+#define DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ		0
+#define DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ		1
+#define DWC_DSTS_ENUMSPD_LS_PHY_6MHZ			2
+#define DWC_DSTS_ENUMSPD_FS_PHY_48MHZ			3
+		/* Suspend Status */
+		unsigned suspsts:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device IN EP Interrupt Register
+ * and the Device IN EP Common Mask Register.
+ *
+ * Read the register into the d32 member then set/clear the bits using the bit
+ * elements.
+ */
+union diepint_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved31_08:23;
+		unsigned txfifoundrn:1;
+		/* IN Endpoint HAK Effective mask */
+		unsigned emptyintr:1;
+		/* IN Endpoint NAK Effective mask */
+		unsigned inepnakeff:1;
+		/* IN Token Received with EP mismatch mask */
+		unsigned intknepmis:1;
+		/* IN Token received with TxF Empty mask */
+		unsigned intktxfemp:1;
+		/* TimeOUT Handshake mask (non-ISOC EPs) */
+		unsigned timeout:1;
+		/* AHB Error mask */
+		unsigned ahberr:1;
+		/* Endpoint disable mask */
+		unsigned epdisabled:1;
+		/* Transfer complete mask */
+		unsigned xfercompl:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device OUT EP Interrupt Register
+ * and Device OUT EP Common Interrupt Mask Register.
+ *
+ * Read the register into the d32 member then set/clear the bits using the bit
+ * elements.
+ */
+union doepint_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved31_04:28; /* Docs say reserved is 27 bits */
+
+		/* There is 1 bit missing here, not used? */
+
+		/* Setup Phase Done (control EPs) */
+		unsigned setup:1;
+		/* AHB Error */
+		unsigned ahberr:1;
+		/* Endpoint disable  */
+		unsigned epdisabled:1;
+		/* Transfer complete */
+		unsigned xfercompl:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device All EP Interrupt and Mask
+ * Registers.  Read the register into the d32 member then set/clear the bits
+ * using the bit elements.
+ */
+union daint_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		/* OUT Endpoint bits */
+		unsigned out:16;
+		/* IN Endpoint bits */
+		unsigned in:16;
+	} ep;
+	struct {
+		/* OUT Endpoint bits */
+		unsigned outep15:1;
+		unsigned outep14:1;
+		unsigned outep13:1;
+		unsigned outep12:1;
+		unsigned outep11:1;
+		unsigned outep10:1;
+		unsigned outep9:1;
+		unsigned outep8:1;
+		unsigned outep7:1;
+		unsigned outep6:1;
+		unsigned outep5:1;
+		unsigned outep4:1;
+		unsigned outep3:1;
+		unsigned outep2:1;
+		unsigned outep1:1;
+		unsigned outep0:1;
+		/* IN Endpoint bits */
+		unsigned inep15:1;
+		unsigned inep14:1;
+		unsigned inep13:1;
+		unsigned inep12:1;
+		unsigned inep11:1;
+		unsigned inep10:1;
+		unsigned inep9:1;
+		unsigned inep8:1;
+		unsigned inep7:1;
+		unsigned inep6:1;
+		unsigned inep5:1;
+		unsigned inep4:1;
+		unsigned inep3:1;
+		unsigned inep2:1;
+		unsigned inep1:1;
+		unsigned inep0:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device IN Token Queue Read
+ * Registers.  Read the register into the d32 member. READ-ONLY Register
+ */
+union dtknq1_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		/* EP Numbers of IN Tokens 0 ... 4 */
+		unsigned epnums0_5:24;
+		/* write pointer has wrapped. */
+		unsigned wrap_bit:1;
+		/* Reserved */
+		unsigned reserved05_06:2;
+		/* In Token Queue Write Pointer */
+		unsigned intknwptr:5;
+	} b;
+};
+
+/*
+ * This union represents Threshold control Register. Read and write the register
+ * into the d32 member.  READ-WRITABLE Register
+ */
+union dthrctl_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		/* Reserved */
+		unsigned reserved26_31:6;
+		/* Rx Thr. Length */
+		unsigned rx_thr_len:9;
+		/* Rx Thr. Enable */
+		unsigned rx_thr_en:1;
+		/* Reserved */
+		unsigned reserved11_15:5;
+		/* Tx Thr. Length */
+		unsigned tx_thr_len:9;
+		/* ISO Tx Thr. Enable */
+		unsigned iso_thr_en:1;
+		/* non ISO Tx Thr. Enable */
+		unsigned non_iso_thr_en:1;
+	} b;
+};
+
+/*
+ * Device Logical IN Endpoint-Specific Registers. Offsets 900h-AFCh
+ *
+ * There will be one set of endpoint registers per logical endpoint implemented.
+ *
+ * These registers are visible only in Device mode and must not be accessed in
+ * Host mode, as the results are unknown.
+ */
+ struct device_in_ep_regs {
+	/*
+	 * Device IN Endpoint Control Register.
+	 * Offset:900h + (ep_num * 20h) + 00h
+	 */
+	u32 diepctl;
+	/* Reserved. Offset:900h + (ep_num * 20h) + 04h */
+	u32 reserved04;
+	/*
+	 * Device IN Endpoint Interrupt Register.
+	 * Offset:900h + (ep_num * 20h) + 08h
+	 */
+	u32 diepint;
+	/* Reserved. Offset:900h + (ep_num * 20h) + 0Ch */
+	u32 reserved0C;
+	/* Device IN Endpoint Transfer Size Register.
+	 * Offset:900h + (ep_num * 20h) + 10h
+	 */
+	u32 dieptsiz;
+	/*
+	 * Device IN Endpoint DMA Address Register.
+	 * Offset:900h + (ep_num * 20h) + 14h
+	 */
+	u32 diepdma;
+	/* Reserved.
+	 * Offset:900h + (ep_num * 20h) + 18h - 900h + (ep_num * 20h) + 1Ch
+	 */
+	u32 dtxfsts;
+	/*
+	 * Reserved.
+	 * Offset:900h + (ep_num * 20h) + 1Ch - 900h + (ep_num * 20h) + 1Ch
+	 */
+	u32 reserved18;
+};
+
+/*
+ * Device Logical OUT Endpoint-Specific Registers. Offsets: B00h-CFCh
+ *
+ * There will be one set of endpoint registers per logical endpoint implemented.
+ *
+ * These registers are visible only in Device mode and must not be accessed in
+ * Host mode, as the results are unknown.
+ */
+struct device_out_ep_regs {
+	/*
+	 * Device OUT Endpoint Control Register.
+	 * Offset:B00h + (ep_num * 20h) + 00h
+	 */
+	u32 doepctl;
+	/*
+	 * Device OUT Endpoint Frame number Register.
+	 * Offset: B00h + (ep_num * 20h) + 04h
+	 */
+	u32 doepfn;
+	/*
+	 * Device OUT Endpoint Interrupt Register.
+	 * Offset:B00h + (ep_num * 20h) + 08h
+	 */
+	u32 doepint;
+	/* Reserved. Offset:B00h + (ep_num * 20h) + 0Ch */
+	u32 reserved0C;
+	/*
+	 * Device OUT Endpoint Transfer Size Register.
+	 * Offset: B00h + (ep_num * 20h) + 10h
+	 */
+	u32 doeptsiz;
+	/*
+	 * Device OUT Endpoint DMA Address Register.
+	 * Offset:B00h + (ep_num * 20h) + 14h
+	 */
+	u32 doepdma;
+	/*
+	 * Reserved.
+	 * Offset:B00h + (ep_num * 20h) + 18h - B00h + (ep_num * 20h) + 1Ch
+	 */
+	u32 unused[2];
+};
+
+/*
+ * This union represents the bit fields in the Device EP Control Register.  Read
+ * the register into the d32 member then set/clear the bits using the bit
+ * elements.
+ */
+union depctl_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		/* Endpoint Enable */
+		unsigned epena:1;
+		/* Endpoint Disable */
+		unsigned epdis:1;
+
+		/*
+		 * Set DATA1 PID (INTR/Bulk IN and OUT endpoints) Writing to
+		 * this field sets the Endpoint DPID (DPID) field in this
+		 * register to DATA1 Set Odd (micro)frame (SetOddFr) (ISO IN and
+		 * OUT Endpoints) Writing to this field sets the Even/Odd
+		 * (micro)frame (EO_FrNum) field to odd (micro) frame.
+		 */
+		unsigned setd1pid:1;
+		/*
+		 * Set DATA0 PID (INTR/Bulk IN and OUT endpoints)  Writing to
+		 * this field sets the Endpoint DPID (DPID) field in this
+		 * register to DATA0. Set Even (micro)frame (SetEvenFr) (ISO IN
+		 * and OUT Endpoints) Writing to this field sets the Even/Odd
+		 * (micro)frame (EO_FrNum) field to even (micro) frame.
+		 */
+		unsigned setd0pid:1;
+
+		/* Set NAK */
+		unsigned snak:1;
+		/* Clear NAK */
+		unsigned cnak:1;
+
+		/*
+		 * Tx Fifo Number
+		 * IN EPn/IN EP0
+		 * OUT EPn/OUT EP0 - reserved
+		 */
+		unsigned txfnum:4;
+
+		/* Stall Handshake */
+		unsigned stall:1;
+
+		/* Snoop Mode
+		 * OUT EPn/OUT EP0
+		 * IN EPn/IN EP0 - reserved
+		 */
+		unsigned snp:1;
+
+		/* Endpoint Type
+		 *  2'b00: Control
+		 *  2'b01: Isochronous
+		 *  2'b10: Bulk
+		 *  2'b11: Interrupt
+		 */
+		unsigned eptype:2;
+
+		/* NAK Status */
+		unsigned naksts:1;
+
+		/*
+		 * Endpoint DPID (INTR/Bulk IN and OUT endpoints) This field
+		 * contains the PID of the packet going to be received or
+		 * transmitted on this endpoint. The application should program
+		 * the PID of the first packet going to be received or
+		 * transmitted on this endpoint, after the endpoint is
+		 * activated. Applications use the SetD1PID and SetD0PID fields
+		 * of this register to program either D0 or D1 PID.
+		 *
+		 * The encoding for this field is
+		 *   - 0: D0
+		 *   - 1: D1
+		 */
+		unsigned dpid:1;
+
+		/* USB Active Endpoint */
+		unsigned usbactep:1;
+
+		/*
+		 * Next Endpoint
+		 * IN EPn/IN EP0
+		 * OUT EPn/OUT EP0 - reserved
+		 */
+		unsigned nextep:4;
+
+		/*
+		 * Maximum Packet Size
+		 * IN/OUT EPn
+		 * IN/OUT EP0 - 2 bits
+		 *   2'b00: 64 Bytes
+		 *   2'b01: 32
+		 *   2'b10: 16
+		 *   2'b11: 8
+		 */
+		unsigned mps:11;
+#define DWC_DEP0CTL_MPS_64			0
+#define DWC_DEP0CTL_MPS_32			1
+#define DWC_DEP0CTL_MPS_16			2
+#define DWC_DEP0CTL_MPS_8			3
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device EP Transfer Size Register.
+ * Read the register into the d32 member then set/clear the bits using the bit
+ * elements.
+ */
+union deptsiz_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+
+	/*
+	 * Added-sr: 2007-07-26
+	 *
+	 * Correct ther register layout for the 405EZ Ultra
+	 * USB device implementation.
+	 */
+#ifdef CONFIG_DWC_LIMITED_XFER_SIZE
+	struct {
+		unsigned reserved:1;
+		/* Multi Count - Periodic IN endpoints */
+		unsigned mc:2;
+		unsigned reserved1:5;
+		/* Packet Count */
+		unsigned pktcnt:5;
+		unsigned reserved2:8;
+		/* Transfer size */
+		unsigned xfersize:11;
+	} b;
+#else
+	struct {
+		unsigned reserved:1;
+		/* Multi Count - Periodic IN endpoints */
+		unsigned mc:2;
+		/* Packet Count */
+		unsigned pktcnt:10;
+		/* Transfer size */
+		unsigned xfersize:19;
+	} b;
+#endif
+};
+
+/*
+ * This union represents the bit fields in the Device EP 0 Transfer Size
+ * Register.  Read the register into the d32 member then set/clear the bits
+ * using the bit elements.
+ */
+union deptsiz0_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved31:1; /* device*/
+		/*Setup Packet Count (DOEPTSIZ0 Only) */
+		unsigned supcnt:2;
+		/* Reserved */
+		unsigned reserved28_20:9;
+		/* Packet Count */
+		unsigned pktcnt:1;
+		/* Reserved */
+		unsigned reserved18_7:12;
+		/* Transfer size */
+		unsigned xfersize:7;
+	} b;
+};
+
+#define MAX_PERIO_FIFOS			15	/* Max periodic FIFOs */
+#define MAX_TX_FIFOS			15	/* Max non-periodic FIFOs */
+
+/* Maximum number of Endpoints/HostChannels */
+#if defined(CONFIG_460EX)
+#define MAX_EPS_CHANNELS 12
+#else
+#define MAX_EPS_CHANNELS 4
+#endif
+
+/*
+ * The device_if structure contains information needed to manage the DWC_otg
+ * controller acting in device mode. It represents the programming view of the
+ * device-specific aspects of the controller.
+ */
+struct device_if {
+	/* Device Global Registers starting at offset 800h */
+	struct device_global_regs *dev_global_regs;
+#define DWC_DEV_GLOBAL_REG_OFFSET		0x800
+
+	/* Device Logical IN Endpoint-Specific Registers 900h-AFCh */
+	struct device_in_ep_regs *in_ep_regs[MAX_EPS_CHANNELS];
+#define DWC_DEV_IN_EP_REG_OFFSET		0x900
+#define DWC_EP_REG_OFFSET			0x20
+
+	/* Device Logical OUT Endpoint-Specific Registers B00h-CFCh */
+	struct device_out_ep_regs *out_ep_regs[MAX_EPS_CHANNELS];
+#define DWC_DEV_OUT_EP_REG_OFFSET		0xB00
+
+	/* Device configuration information */
+	/* Device Speed  0: Unknown, 1: LS, 2:FS, 3: HS */
+	u8  speed;
+	/*  Number # of Tx EP range: 0-15 exept ep0 */
+	u8  num_in_eps;
+	/*  Number # of Rx EP range: 0-15 exept ep 0*/
+	u8  num_out_eps;
+
+	/* Size of periodic FIFOs (Bytes) */
+	u16 perio_tx_fifo_size[MAX_PERIO_FIFOS];
+
+	/* Size of Tx FIFOs (Bytes) */
+	u16 tx_fifo_size[MAX_TX_FIFOS];
+
+	/* Thresholding enable flags and length varaiables */
+	u16 rx_thr_en;
+	u16 iso_tx_thr_en;
+	u16 non_iso_tx_thr_en;
+	u16 rx_thr_length;
+	u16 tx_thr_length;
+};
+
+/*
+ * This union represents the bit fields in the Power and Clock Gating Control
+ * Register. Read the register into the d32 member then set/clear the
+ * bits using the bit elements.
+ */
+union pcgcctl_data {
+	u32 d32;
+	struct {
+		unsigned reserved31_05:27;
+		/* PHY Suspended */
+		unsigned physuspended:1;
+		/* Reset Power Down Modules */
+		unsigned rstpdwnmodule:1;
+		/* Power Clamp */
+		unsigned pwrclmp:1;
+		/* Gate Hclk */
+		unsigned gatehclk:1;
+		/* Stop Pclk */
+		unsigned stoppclk:1;
+	} b;
+};
+
+/*
+ * Host Mode Register Structures
+ */
+
+/*
+ * The Host Global Registers structure defines the size and relative field
+ * offsets for the Host Mode Global Registers.  Host Global Registers offsets
+ * 400h-7FFh.
+*/
+struct host_global_regs {
+	/* Host Configuration Register.				Offset: 400h */
+	u32 hcfg;
+	/* Host Frame Interval Register.			Offset: 404h */
+	u32 hfir;
+	/* Host Frame Number / Frame Remaining Register.	Offset: 408h */
+	u32 hfnum;
+	/* Reserved.						Offset: 40Ch */
+	u32 reserved40C;
+	/* Host Periodic Transmit FIFO/ Queue Status Register.	Offset: 410h */
+	u32 hptxsts;
+	/* Host All Channels Interrupt Register.		Offset: 414h */
+	u32 haint;
+	/* Host All Channels Interrupt Mask Register.		Offset: 418h */
+	u32 haintmsk;
+};
+
+/*
+ * This union represents the bit fields in the Host Configuration Register. Read
+ * the register into the d32 member then set/clear the bits using the bit
+ * elements. Write the d32 member to the hcfg register.
+ */
+union hcfg_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+#define DWC_HCFG_30_60_MHZ			0
+#define DWC_HCFG_48_MHZ				1
+#define DWC_HCFG_6_MHZ				2
+		/* FS/LS Only Support */
+		unsigned fslssupp:1;
+		/* FS/LS Phy Clock Select */
+		unsigned fslspclksel:2;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host Frame Remaing/Number
+ * Register.
+ */
+union hfir_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved:16;
+		unsigned frint:16;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host Frame Remaing/Number
+ * Register.
+ */
+union hfnum_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+#define DWC_HFNUM_MAX_FRNUM			0x3FFF
+		unsigned frrem:16;
+		unsigned frnum:16;
+	} b;
+};
+
+union hptxsts_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned ptxqtop_odd:1;
+		unsigned ptxqtop_chnum:4;
+		unsigned ptxqtop_token:2;
+		unsigned ptxqtop_terminate:1;
+		unsigned ptxqspcavail:8;
+		unsigned ptxfspcavail:16;
+		/*
+		 * Top of the Periodic Transmit Request Queue
+		 *  - bit 24 - Terminate (last entry for the selected channel)
+		 *  - bits 26:25 - Token Type
+		 *    - 2'b00 - Zero length
+		 *    - 2'b01 - Ping
+		 *    - 2'b10 - Disable
+		 *  - bits 30:27 - Channel Number
+		 *  - bit 31 - Odd/even microframe
+		 */
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host Port Control and Status
+ * Register. Read the register into the d32 member then set/clear the bits using
+ * the bit elements. Write the d32 member to the hprt0 register.
+ */
+union hprt0_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+#define DWC_HPRT0_PRTSPD_HIGH_SPEED		0
+#define DWC_HPRT0_PRTSPD_FULL_SPEED		1
+#define DWC_HPRT0_PRTSPD_LOW_SPEED		2
+		unsigned reserved19_31:13;
+		unsigned prtspd:2;
+		unsigned prttstctl:4;
+		unsigned prtpwr:1;
+		unsigned prtlnsts:2;
+		unsigned reserved9:1;
+		unsigned prtrst:1;
+		unsigned prtsusp:1;
+		unsigned prtres:1;
+		unsigned prtovrcurrchng:1;
+		unsigned prtovrcurract:1;
+		unsigned prtenchng:1;
+		unsigned prtena:1;
+		unsigned prtconndet:1;
+		unsigned prtconnsts:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host All Interrupt Register.
+ */
+union haint_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved:16;
+		unsigned ch15:1;
+		unsigned ch14:1;
+		unsigned ch13:1;
+		unsigned ch12:1;
+		unsigned ch11:1;
+		unsigned ch10:1;
+		unsigned ch9:1;
+		unsigned ch8:1;
+		unsigned ch7:1;
+		unsigned ch6:1;
+		unsigned ch5:1;
+		unsigned ch4:1;
+		unsigned ch3:1;
+		unsigned ch2:1;
+		unsigned ch1:1;
+		unsigned ch0:1;
+	} b;
+	struct {
+		unsigned reserved:16;
+		unsigned chint:16;
+	} b2;
+};
+
+/*
+ * This union represents the bit fields in the Host All Interrupt Register.
+ */
+union haintmsk_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved:16;
+		unsigned ch15:1;
+		unsigned ch14:1;
+		unsigned ch13:1;
+		unsigned ch12:1;
+		unsigned ch11:1;
+		unsigned ch10:1;
+		unsigned ch9:1;
+		unsigned ch8:1;
+		unsigned ch7:1;
+		unsigned ch6:1;
+		unsigned ch5:1;
+		unsigned ch4:1;
+		unsigned ch3:1;
+		unsigned ch2:1;
+		unsigned ch1:1;
+		unsigned ch0:1;
+	} b;
+	struct {
+		unsigned reserved:16;
+		unsigned chint:16;
+	} b2;
+};
+
+/*
+ * Host Channel Specific Registers. 500h-5FCh
+ */
+struct dwc_hc_regs {			/* CONFIG_DWC_OTG_REG_LE */
+	/*
+	 * Host Channel 0 Characteristic Register.
+	 * Offset: 500h + (chan_num * 20h) + 00h
+	 */
+	u32 hcchar;
+	/*
+	 * Host Channel 0 Split Control Register.
+	 * Offset: 500h + (chan_num * 20h) + 04h
+	 */
+	u32 hcsplt;
+	/*
+	 * Host Channel 0 Interrupt Register.
+	 * Offset: 500h + (chan_num * 20h) + 08h
+	 */
+	u32 hcint;
+	/*
+	 * Host Channel 0 Interrupt Mask Register.
+	 * Offset: 500h + (chan_num * 20h) + 0Ch
+	 */
+	u32 hcintmsk;
+	/*
+	 * Host Channel 0 Transfer Size Register.
+	 * Offset: 500h + (chan_num * 20h) + 10h
+	 */
+	u32 hctsiz;
+	/*
+	 * Host Channel 0 DMA Address Register.
+	 * Offset: 500h + (chan_num * 20h) + 14h
+	 */
+	u32 hcdma;
+	/*
+	 * Reserved.
+	 * Offset: 500h + (chan_num * 20h) + 18h - 500h + (chan_num * 20h) + 1Ch
+	  */
+	u32 reserved[2];
+};
+
+/*
+ * This union represents the bit fields in the Host Channel Characteristics
+ * Register. Read the register into the d32 member then set/clear the bits using
+ * the bit elements. Write the d32 member to the hcchar register.
+ */
+union hcchar_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		/* Channel enable */
+		unsigned chen:1;
+		/* Channel disable */
+		unsigned chdis:1;
+		/*
+		 * Frame to transmit periodic transaction.
+		 * 0: even, 1: odd
+		 */
+		unsigned oddfrm:1;
+		/* Device address */
+		unsigned devaddr:7;
+		/* Packets per frame for periodic transfers. 0 is reserved. */
+		unsigned multicnt:2;
+		/* 0: Control, 1: Isoc, 2: Bulk, 3: Intr */
+		unsigned eptype:2;
+		/* 0: Full/high speed device, 1: Low speed device */
+		unsigned lspddev:1;
+		unsigned reserved:1;
+		/* 0: OUT, 1: IN */
+		unsigned epdir:1;
+		/* Endpoint number */
+		unsigned epnum:4;
+		/* Maximum packet size in bytes */
+		unsigned mps:11;
+	} b;
+};
+
+union hcsplt_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		/* Split Enble */
+		unsigned spltena:1;
+		/* Reserved */
+		unsigned reserved:14;
+		/* Do Complete Split */
+		unsigned compsplt:1;
+		/* Transaction Position */
+		unsigned xactpos:2;
+#define DWC_HCSPLIT_XACTPOS_MID			0
+#define DWC_HCSPLIT_XACTPOS_END			1
+#define DWC_HCSPLIT_XACTPOS_BEGIN		2
+#define DWC_HCSPLIT_XACTPOS_ALL			3
+
+		/* Hub Address */
+		unsigned hubaddr:7;
+		/* Port Address */
+		unsigned prtaddr:7;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host All Interrupt
+ * Register.
+ */
+union hcint_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		/* Reserved */
+		unsigned reserved:21;
+		/* Data Toggle Error */
+		unsigned datatglerr:1;
+		/* Frame Overrun */
+		unsigned frmovrun:1;
+		/* Babble Error */
+		unsigned bblerr:1;
+		/* Transaction Err */
+		unsigned xacterr:1;
+		/* NYET Response Received */
+		unsigned nyet:1;
+		/* ACK Response Received */
+		unsigned ack:1;
+		/* NAK Response Received */
+		unsigned nak:1;
+		/* STALL Response Received */
+		unsigned stall:1;
+		/* AHB Error */
+		unsigned ahberr:1;
+		/* Channel Halted */
+		unsigned chhltd:1;
+		/* Transfer Complete */
+		unsigned xfercomp:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host Channel Transfer Size
+ * Register. Read the register into the d32 member then set/clear the  bits
+ * using the bit elements. Write the d32 member to the hcchar register.
+ */
+union hctsiz_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+#define DWC_HCTSIZ_DATA0			0
+#define DWC_HCTSIZ_DATA1			2
+#define DWC_HCTSIZ_DATA2			1
+#define DWC_HCTSIZ_MDATA			3
+#define DWC_HCTSIZ_SETUP			3
+
+		/* Do PING protocol when 1 */
+		unsigned dopng:1;
+		/*
+		 * Packet ID for next data packet
+		 * 0: DATA0
+		 * 1: DATA2
+		 * 2: DATA1
+		 * 3: MDATA (non-Control), SETUP (Control)
+		 */
+		unsigned pid:2;
+		/* Data packets to transfer */
+		unsigned pktcnt:10;
+		/* Total transfer size in bytes */
+		unsigned xfersize:19;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host Channel Interrupt Mask
+ * Register. Read the register into the d32 member then set/clear the bits using
+ * the bit elements. Write the d32 member to the hcintmsk register.
+ */
+union hcintmsk_data {				/* CONFIG_DWC_OTG_REG_LE */
+	u32 d32;
+	struct {
+		unsigned reserved:21;
+		unsigned datatglerr:1;
+		unsigned frmovrun:1;
+		unsigned bblerr:1;
+		unsigned xacterr:1;
+		unsigned nyet:1;
+		unsigned ack:1;
+		unsigned nak:1;
+		unsigned stall:1;
+		unsigned ahberr:1;
+		unsigned chhltd:1;
+		unsigned xfercompl:1;
+	} b;
+};
+
+/*
+ * OTG Host Interface Structure.
+ *
+ * The OTG Host Interface Structure structure contains information needed to
+ * manage the DWC_otg controller acting in host mode. It represents the
+ * programming view of the host-specific aspects of the controller.
+ */
+struct dwc_host_if {			/* CONFIG_DWC_OTG_REG_LE */
+	/* Host Global Registers starting at offset 400h.*/
+	struct host_global_regs *host_global_regs;
+#define DWC_OTG_HOST_GLOBAL_REG_OFFSET		0x400
+
+	/* Host Port 0 Control and Status Register */
+	u32 *hprt0;
+#define DWC_OTG_HOST_PORT_REGS_OFFSET		0x440
+
+	/* Host Channel Specific Registers at offsets 500h-5FCh. */
+	struct dwc_hc_regs *hc_regs[MAX_EPS_CHANNELS];
+#define DWC_OTG_HOST_CHAN_REGS_OFFSET		0x500
+#define DWC_OTG_CHAN_REGS_OFFSET		0x20
+
+	/* Host configuration information */
+	/* Number of Host Channels (range: 1-16) */
+	u8  num_host_channels;
+	/* Periodic EPs supported (0: no, 1: yes) */
+	u8  perio_eps_supported;
+	/* Periodic Tx FIFO Size (Only 1 host periodic Tx FIFO) */
+	u16 perio_tx_fifo_size;
+};
+
+#else  /* CONFIG_DWC_OTG_REG_LE not defined */
+
+/*
+ * This union represents the bit fields of the Core OTG Control
+ * and Status Register (GOTGCTL).  Set the bits using the bit
+ * fields then write the d32 value to the register.
+ */
+union gotgctl_data {
+	u32 d32;
+	struct {
+		unsigned sesreqscs:1;
+		unsigned sesreq:1;
+		unsigned reserved2_7:6;
+		unsigned hstnegscs:1;
+		unsigned hnpreq:1;
+		unsigned hstsethnpen:1;
+		unsigned devhnpen:1;
+		unsigned reserved12_15:4;
+		unsigned conidsts:1;
+		unsigned reserved17:1;
+		unsigned asesvld:1;
+		unsigned bsesvld:1;
+		unsigned currmod:1;
+		unsigned reserved21_31:11;
+	} b;
+};
+
+/*
+ * This union represents the bit fields of the Core OTG Interrupt Register
+ * (GOTGINT).  Set/clear the bits using the bit fields then write the d32
+ * value to the register.
+ */
+union gotgint_data {
+	u32 d32;
+	struct {
+		/* Current Mode */
+		unsigned reserved0_1:2;
+
+		/* Session End Detected */
+		unsigned sesenddet:1;
+
+		unsigned reserved3_7:5;
+
+		/* Session Request Success Status Change */
+		unsigned sesreqsucstschng:1;
+		/* Host Negotiation Success Status Change */
+		unsigned hstnegsucstschng:1;
+
+		unsigned reserver10_16:7;
+
+		/* Host Negotiation Detected */
+		unsigned hstnegdet:1;
+		/* A-Device Timeout Change */
+		unsigned adevtoutchng:1;
+		/* Debounce Done */
+		unsigned debdone:1;
+
+		unsigned reserved31_20:12;
+
+	} b;
+};
+
+/*
+ * This union represents the bit fields of the Core AHB Configuration Register
+ * (GAHBCFG).  Set/clear the bits using the bit fields then write the d32 value
+ * to the register.
+ */
+union gahbcfg_data {
+	u32 d32;
+	struct {
+		unsigned glblintrmsk:1;
+#define DWC_GAHBCFG_GLBINT_ENABLE		1
+
+		unsigned hburstlen:4;
+#define DWC_GAHBCFG_INT_DMA_BURST_SINGLE	0
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR		1
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR4		3
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR8		5
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR16	7
+
+		unsigned dmaenable:1;
+#define DWC_GAHBCFG_DMAENABLE			1
+		unsigned reserved:1;
+		unsigned nptxfemplvl_txfemplvl:1;
+		unsigned ptxfemplvl:1;
+#define DWC_GAHBCFG_TXFEMPTYLVL_EMPTY		1
+#define DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY	0
+		unsigned reserved9_31:23;
+	} b;
+};
+
+/*
+ * This union represents the bit fields of the Core USB Configuration Register
+ * (GUSBCFG).  Set the bits using the bit fields then write the d32 value to
+ * the register.
+ */
+union gusbcfg_data {
+	u32 d32;
+	struct {
+		unsigned toutcal:3;
+		unsigned phyif:1;
+		unsigned ulpi_utmi_sel:1;
+		unsigned fsintf:1;
+		unsigned physel:1;
+		unsigned ddrsel:1;
+		unsigned srpcap:1;
+		unsigned hnpcap:1;
+		unsigned usbtrdtim:4;
+		unsigned nptxfrwnden:1;
+		unsigned phylpwrclksel:1;
+		unsigned otgutmifssel:1;
+		unsigned ulpi_fsls:1;
+		unsigned ulpi_auto_res:1;
+		unsigned ulpi_clk_sus_m:1;
+		unsigned ulpi_ext_vbus_drv:1;
+		unsigned ulpi_int_vbus_indicator:1;
+		unsigned term_sel_dl_pulse:1;
+		unsigned reserved23_28:6;
+		unsigned force_host_mode:1;
+		unsigned force_device_mode:1;
+		unsigned corrupt_tx_packet:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields of the Core Reset Register (GRSTCTL).
+ * Set/clear the bits using the bit fields then write the d32 value to the
+ * register.
+ */
+union grstctl_data {
+	u32 d32;
+	struct {
+		/*
+		 * Core Soft Reset (CSftRst) (Device and Host)
+		 *
+		 * The application can flush the control logic in the entire
+		 * core using this bit. This bit resets the pipelines in the AHB
+		 * Clock domain as well as the PHY Clock domain.
+		 *
+		 * The state machines are reset to an IDLE state, the control
+		 * bits in the CSRs are cleared, all the transmit FIFOs and the
+		 * receive FIFO are flushed.
+		 *
+		 * The status mask bits that control the generation of the
+		 * interrupt, are cleared, to clear the interrupt. The interrupt
+		 * status bits are not cleared, so the application can get the
+		 * status of any events that occurred in the core after it has
+		 * set this bit.
+		 *
+		 * Any transactions on the AHB are terminated as soon as
+		 * possible following the protocol. Any transactions on the USB
+		 * are terminated immediately.
+		 *
+		 * The configuration settings in the CSRs are unchanged, so the
+		 * software doesn't have to reprogram these registers (Device
+		 * Configuration/Host Configuration/Core System
+		 * Configuration/Core PHY Configuration).
+		 *
+		 * The application can write to this bit, any time it wants to
+		 * reset the core. This is a self clearing bit and the core
+		 * clears this bit after all the necessary logic is reset in the
+		 * core, which may take several clocks, depending on the current
+		 * state of the core.
+		 */
+		unsigned csftrst:1;
+		/*
+		 * Hclk Soft Reset
+		 *
+		 * The application uses this bit to reset the control logic in
+		 * the AHB clock domain. Only AHB clock domain pipelines are
+		 * reset.
+		 */
+		unsigned hsftrst:1;
+		/*
+		 * Host Frame Counter Reset (Host Only)<br>
+		 *
+		 * The application can reset the (micro)frame number counter
+		 * inside the core, using this bit. When the (micro)frame
+		 * counter is reset, the subsequent SOF sent out by the core,
+		 * will have a (micro)frame number of 0.
+		 */
+		unsigned hstfrm:1;
+		/*
+		 * In Token Sequence Learning Queue Flush (INTknQFlsh) (Device
+		 * Only)
+		 */
+		unsigned intknqflsh:1;
+		/*
+		 * RxFIFO Flush (RxFFlsh) (Device and Host)
+		 *
+		 * The application can flush the entire Receive FIFO using this
+		 * bit.
+		 *
+		 * The application must first ensure that the core is not in the
+		 * middle of a transaction.
+		 *
+		 * The application should write into this bit, only after making
+		 * sure that neither the DMA engine is reading from the RxFIFO
+		 * nor the MAC is writing the data in to the FIFO.
+		 *
+		 * The application should wait until the bit is cleared before
+		 * performing any other operations. This bit will takes 8 clocks
+		 * (slowest of PHY or AHB clock) to clear.
+		 */
+		unsigned rxfflsh:1;
+		/*
+		 * TxFIFO Flush (TxFFlsh) (Device and Host).
+		 *
+		 * This bit is used to selectively flush a single or all
+		 * transmit FIFOs.  The application must first ensure that the
+		 * core is not in the middle of a transaction.
+		 *
+		 * The application should write into this bit, only after making
+		 * sure that neither the DMA engine is writing into the TxFIFO
+		 * nor the MAC is reading the data out of the FIFO.
+		 *
+		 * The application should wait until the core clears this bit,
+		 * before performing any operations. This bit will takes 8
+		 * clocks (slowest of PHY or AHB clock) to clear.
+		 */
+		unsigned txfflsh:1;
+
+		/*
+		 * TxFIFO Number (TxFNum) (Device and Host).
+		 *
+		 * This is the FIFO number which needs to be flushed, using the
+		 * TxFIFO Flush bit. This field should not be changed until the
+		 * TxFIFO Flush bit is cleared by the core.
+		 *	 - 0x0 : Non Periodic TxFIFO Flush
+		 *	 - 0x1 : Periodic TxFIFO #1 Flush in device mode
+		 *	   or Periodic TxFIFO in host mode
+		 *	 - 0x2 : Periodic TxFIFO #2 Flush in device mode.
+		 *	 - ...
+		 *	 - 0xF : Periodic TxFIFO #15 Flush in device mode
+		 *	 - 0x10: Flush all the Transmit NonPeriodic and
+		 *	   Transmit Periodic FIFOs in the core
+		 */
+		unsigned txfnum:5;
+#define DWC_GRSTCTL_TXFNUM_ALL			0x10
+
+		/* Reserved */
+		unsigned reserved11_29:19;
+		/*
+		 * DMA Request Signal.  Indicated DMA request is in progress.
+		 * Used for debug purpose.
+		 */
+		unsigned dmareq:1;
+		/*
+		 * AHB Master Idle.  Indicates the AHB Master State Machine is
+		 * in IDLE condition.
+		 */
+		unsigned ahbidle:1;
+	} b;
+};
+
+
+/*
+ * This union represents the bit fields of the Core Interrupt Mask Register
+ * (GINTMSK). Set/clear the bits using the bit fields then write the d32 value
+ * to the register.
+ */
+union gintmsk_data {
+	u32 d32;
+	struct {
+		unsigned reserved0:1;
+		unsigned modemismatch:1;
+		unsigned otgintr:1;
+		unsigned sofintr:1;
+		unsigned rxstsqlvl:1;
+		unsigned nptxfempty:1;
+		unsigned ginnakeff:1;
+		unsigned goutnakeff:1;
+		unsigned reserved8:1;
+		unsigned i2cintr:1;
+		unsigned erlysuspend:1;
+		unsigned usbsuspend:1;
+		unsigned usbreset:1;
+		unsigned enumdone:1;
+		unsigned isooutdrop:1;
+		unsigned eopframe:1;
+		unsigned reserved16:1;
+		unsigned epmismatch:1;
+		unsigned inepintr:1;
+		unsigned outepintr:1;
+		unsigned incomplisoin:1;
+		unsigned incomplisoout:1;
+		unsigned reserved22_23:2;
+		unsigned portintr:1;
+		unsigned hcintr:1;
+		unsigned ptxfempty:1;
+		unsigned reserved27:1;
+		unsigned conidstschng:1;
+		unsigned disconnect:1;
+		unsigned sessreqintr:1;
+		unsigned wkupintr:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields of the Core Interrupt Register
+ * (GINTSTS).  Set/clear the bits using the bit fields then write the d32 value
+ * to the register.
+ */
+union gintsts_data {
+	u32 d32;
+#define DWC_SOF_INTR_MASK			0x0008
+
+	struct {
+#define DWC_HOST_MODE 1
+		unsigned curmode:1;
+		unsigned modemismatch:1;
+		unsigned otgintr:1;
+		unsigned sofintr:1;
+		unsigned rxstsqlvl:1;
+		unsigned nptxfempty:1;
+		unsigned ginnakeff:1;
+		unsigned goutnakeff:1;
+		unsigned reserved8:1;
+		unsigned i2cintr:1;
+		unsigned erlysuspend:1;
+		unsigned usbsuspend:1;
+		unsigned usbreset:1;
+		unsigned enumdone:1;
+		unsigned isooutdrop:1;
+		unsigned eopframe:1;
+		unsigned intokenrx:1;
+		unsigned epmismatch:1;
+		unsigned inepint:1;
+		unsigned outepintr:1;
+		unsigned incomplisoin:1;
+		unsigned incomplisoout:1;
+		unsigned reserved22_23:2;
+		unsigned portintr:1;
+		unsigned hcintr:1;
+		unsigned ptxfempty:1;
+		unsigned reserved27:1;
+		unsigned conidstschng:1;
+		unsigned disconnect:1;
+		unsigned sessreqintr:1;
+		unsigned wkupintr:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device Receive Status Read and
+ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the d32 element then
+ * read out the bits using the bit elements.
+ */
+union device_grxsts_data {
+	u32 d32;
+	struct {
+		unsigned epnum:4;
+		unsigned bcnt:11;
+		unsigned dpid:2;
+
+#define DWC_STS_DATA_UPDT		0x2	/* OUT Data Packet */
+#define DWC_STS_XFER_COMP		0x3	/* OUT Data Transfer Complete */
+#define DWC_DSTS_GOUT_NAK		0x1	/* Global OUT NAK */
+#define DWC_DSTS_SETUP_COMP		0x4	/* Setup Phase Complete */
+#define DWC_DSTS_SETUP_UPDT		0x6	/* SETUP Packet */
+		unsigned pktsts:4;
+		unsigned fn:4;
+		unsigned reserved:7;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host Receive Status Read and
+ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the d32 element then
+ * read out the bits using the bit elements.
+ */
+union host_grxsts_data {
+	u32 d32;
+	struct {
+		unsigned chnum:4;
+		unsigned bcnt:11;
+		unsigned dpid:2;
+
+		unsigned pktsts:4;
+#define DWC_GRXSTS_PKTSTS_IN			0x2
+#define DWC_GRXSTS_PKTSTS_IN_XFER_COMP		0x3
+#define DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR	0x5
+#define DWC_GRXSTS_PKTSTS_CH_HALTED		0x7
+
+		unsigned reserved:11;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the FIFO Size Registers (HPTXFSIZ,
+ * GNPTXFSIZ, DPTXFSIZn, DIEPTXFn). Read the register into the d32 element then
+ * read out the bits using the bit elements.
+ */
+union fifosize_data {
+	u32 d32;
+	struct {
+		unsigned startaddr:16;
+		unsigned depth:16;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Non-Periodic Transmit FIFO/Queue
+ * Status Register (GNPTXSTS). Read the register into the d32 element then read
+ * out the bits using the bit elements.
+ */
+union gnptxsts_data {
+	u32 d32;
+	struct {
+		unsigned nptxfspcavail:16;
+		unsigned nptxqspcavail:8;
+		/*
+		 * Top of the Non-Periodic Transmit Request Queue
+		 *	- bit 24 - Terminate (Last entry for the selected
+		 *	  channel/EP)
+		 *	- bits 26:25 - Token Type
+		 *	  - 2'b00 - IN/OUT
+		 *	  - 2'b01 - Zero Length OUT
+		 *	  - 2'b10 - PING/Complete Split
+		 *	  - 2'b11 - Channel Halt
+		 *	- bits 30:27 - Channel/EP Number
+		 */
+		unsigned nptxqtop_terminate:1;
+		unsigned nptxqtop_token:2;
+		unsigned nptxqtop_chnep:4;
+		unsigned reserved:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Transmit	FIFO Status Register
+ * (DTXFSTS). Read the register into the d32 element then read out the bits
+ * using the bit elements.
+ */
+union dtxfsts_data {
+	u32 d32;
+	struct {
+		unsigned txfspcavail:16;
+		unsigned reserved:16;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the I2C Control Register (I2CCTL).
+ * Read the register into the d32 element then read out the bits using the bit
+ * elements.
+ */
+union gi2cctl_data {
+	u32 d32;
+	struct {
+		unsigned rwdata:8;
+		unsigned regaddr:8;
+		unsigned addr:7;
+		unsigned i2cen:1;
+		unsigned ack:1;
+		unsigned i2csuspctl:1;
+		unsigned i2cdevaddr:2;
+		unsigned reserved:2;
+		unsigned rw:1;
+		unsigned bsydne:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the User HW Config1 Register.  Read
+ * the register into the d32 element then read out the bits using the bit
+ * elements.
+ */
+union hwcfg1_data {
+	u32 d32;
+	struct {
+		unsigned ep_dir0:2;
+		unsigned ep_dir1:2;
+		unsigned ep_dir2:2;
+		unsigned ep_dir3:2;
+		unsigned ep_dir4:2;
+		unsigned ep_dir5:2;
+		unsigned ep_dir6:2;
+		unsigned ep_dir7:2;
+		unsigned ep_dir8:2;
+		unsigned ep_dir9:2;
+		unsigned ep_dir10:2;
+		unsigned ep_dir11:2;
+		unsigned ep_dir12:2;
+		unsigned ep_dir13:2;
+		unsigned ep_dir14:2;
+		unsigned ep_dir15:2;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the User HW Config2 Register.  Read
+ * the register into the d32 element then read out the bits using the bit
+ * elements.
+ */
+union hwcfg2_data {
+	u32 d32;
+	struct {
+		/* GHWCFG2 */
+		unsigned op_mode:3;
+#define DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG		0
+#define DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG		1
+#define DWC_HWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE_OTG	2
+#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE		3
+#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE	4
+#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST		5
+#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST		6
+
+		unsigned architecture:2;
+		unsigned point2point:1;
+		unsigned hs_phy_type:2;
+#define DWC_HWCFG2_HS_PHY_TYPE_NOT_SUPPORTED		0
+#define DWC_HWCFG2_HS_PHY_TYPE_UTMI			1
+#define DWC_HWCFG2_HS_PHY_TYPE_ULPI			2
+#define DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI		3
+
+		unsigned fs_phy_type:2;
+		unsigned num_dev_ep:4;
+		unsigned num_host_chan:4;
+		unsigned perio_ep_supported:1;
+		unsigned dynamic_fifo:1;
+		unsigned rx_status_q_depth:2;
+		unsigned nonperio_tx_q_depth:2;
+		unsigned host_perio_tx_q_depth:2;
+		unsigned dev_token_q_depth:5;
+		unsigned reserved31:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the User HW Config3 Register.  Read
+ * the register into the d32 element then read out the bits using the bit
+ * elements.
+ */
+union hwcfg3_data {
+	u32 d32;
+	struct {
+		/* GHWCFG3 */
+		unsigned xfer_size_cntr_width:4;
+		unsigned packet_size_cntr_width:3;
+		unsigned otg_func:1;
+		unsigned i2c:1;
+		unsigned vendor_ctrl_if:1;
+		unsigned optional_features:1;
+		unsigned synch_reset_type:1;
+		unsigned reserved15_12:4;
+		unsigned dfifo_depth:16;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the User HW Config4 Register.  Read
+ * the register into the d32 element then read out the bits using the bit
+ * elements.
+ */
+union hwcfg4_data {
+	u32 d32;
+	struct {
+		unsigned num_dev_perio_in_ep:4;
+		unsigned power_optimiz:1;
+		unsigned min_ahb_freq:9;
+		unsigned utmi_phy_data_width:2;
+		unsigned num_dev_mode_ctrl_ep:4;
+		unsigned iddig_filt_en:1;
+		unsigned vbus_valid_filt_en:1;
+		unsigned a_valid_filt_en:1;
+		unsigned b_valid_filt_en:1;
+		unsigned session_end_filt_en:1;
+		unsigned ded_fifo_en:1;
+		unsigned num_in_eps:4;
+		unsigned reserved31_30:2;
+	} b;
+};
+
+/*
+ * Device Global Registers. Offsets 800h-BFFh
+ *
+ * The following structures define the size and relative field offsets for the
+ * Device Mode Registers.
+ *
+ * These registers are visible only in Device mode and must not be accessed in
+ * Host mode, as the results are unknown.
+ */
+struct device_global_regs {
+	/* Device Configuration Register.			Offset 800h */
+	u32 dcfg;
+	/* Device Control Register.				Offset: 804h */
+	u32 dctl;
+	/* Device Status Register (Read Only).			Offset: 808h */
+	u32 dsts;
+	/* Reserved.						Offset: 80Ch */
+	u32 unused;
+	/* Device IN Endpoint Common Interrupt Mask Register.	Offset: 810h */
+	u32 diepmsk;
+	/* Device OUT Endpoint Common Interrupt MaskRegister.	Offset: 814h */
+	u32 doepmsk;
+	/* Device All Endpoints Interrupt Register.		Offset: 818h */
+	u32 daint;
+	/* Device All Endpoints Interrupt Mask Register.	Offset:	81Ch */
+	u32 daintmsk;
+	/* Device IN Token Queue Read Register-1 (Read Only).	Offset: 820h */
+	u32 dtknqr1;
+	/* Device IN Token Queue Read Register-2 (Read Only).	Offset: 824h */
+	u32 dtknqr2;
+	/* Device VBUS	 discharge Register.			Offset: 828h */
+	u32 dvbusdis;
+	/* Device VBUS Pulse Register.				Offset: 82Ch */
+	u32 dvbuspulse;
+	/*
+	 * Device IN Token Queue Read Register-3 (Read Only).
+	 * Device Thresholding control register (Read/Write)
+	 *							Offset: 830h
+	 */
+	u32 dtknqr3_dthrctl;
+	/*
+	 * Device IN Token Queue Read Register-4 (Read Only).
+	 * Device IN EPs empty Inr. Mask Register (Read/Write)
+	 *							Offset: 834h
+	 */
+	u32 dtknqr4_fifoemptymsk;
+};
+
+/*
+ * This union represents the bit fields in the Device Configuration Register.
+ * Read the register into the d32 member then  set/clear the bits using the bit
+ * elements.  Write the d32 member to the dcfg register.
+ */
+union dcfg_data {
+	u32 d32;
+	struct {
+		/* Device Speed */
+		unsigned devspd:2;
+		/* Non Zero Length Status OUT Handshake */
+		unsigned nzstsouthshk:1;
+#define DWC_DCFG_SEND_STALL			1
+
+		unsigned reserved3:1;
+		/* Device Addresses */
+		unsigned devaddr:7;
+		/* Periodic Frame Interval */
+		unsigned perfrint:2;
+#define DWC_DCFG_FRAME_INTERVAL_80		0
+#define DWC_DCFG_FRAME_INTERVAL_85		1
+#define DWC_DCFG_FRAME_INTERVAL_90		2
+#define DWC_DCFG_FRAME_INTERVAL_95		3
+
+		unsigned reserved13_17:5;
+		/* In Endpoint Mis-match count */
+		unsigned epmscnt:4;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device Control Register.  Read
+ * the register into the d32 member then set/clear the bits using the bit
+ * elements.
+ */
+union dctl_data {
+	u32 d32;
+	struct {
+		/* Remote Wakeup */
+		unsigned rmtwkupsig:1;
+		/* Soft Disconnect */
+		unsigned sftdiscon:1;
+		/* Global Non-Periodic IN NAK Status */
+		unsigned gnpinnaksts:1;
+		/* Global OUT NAK Status */
+		unsigned goutnaksts:1;
+		/* Test Control */
+		unsigned tstctl:3;
+		/* Set Global Non-Periodic IN NAK */
+		unsigned sgnpinnak:1;
+		/* Clear Global Non-Periodic IN NAK */
+		unsigned cgnpinnak:1;
+		/* Set Global OUT NAK */
+		unsigned sgoutnak:1;
+		/* Clear Global OUT NAK */
+		unsigned cgoutnak:1;
+		unsigned reserved:21;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device Status Register.  Read the
+ * register into the d32 member then set/clear the bits using the bit elements.
+ */
+union dsts_data	{
+	u32 d32;
+	struct {
+		/* Suspend Status */
+		unsigned suspsts:1;
+		/* Enumerated Speed */
+		unsigned enumspd:2;
+#define DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ		0
+#define DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ		1
+#define DWC_DSTS_ENUMSPD_LS_PHY_6MHZ			2
+#define DWC_DSTS_ENUMSPD_FS_PHY_48MHZ			3
+
+		/* Erratic Error */
+		unsigned errticerr:1;
+		unsigned reserved4_7:4;
+		/* Frame or Microframe Number of the received SOF */
+		unsigned soffn:14;
+		unsigned reserved22_31:10;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device IN EP Interrupt Register
+ * and the Device IN EP Common Mask Register. Read the register into the d32
+ * member then set/clear the bits using the bit elements.
+ */
+union diepint_data {
+	u32 d32;
+	struct {
+		/* Transfer complete mask */
+		unsigned xfercompl:1;
+		/* Endpoint disable mask */
+		unsigned epdisabled:1;
+		/* AHB Error mask */
+		unsigned ahberr:1;
+		/* TimeOUT Handshake mask (non-ISOC EPs) */
+		unsigned timeout:1;
+		/* IN Token received with TxF Empty mask */
+		unsigned intktxfemp:1;
+		/* IN Token Received with EP mismatch mask */
+		unsigned intknepmis:1;
+		/* IN Endpoint HAK Effective mask */
+		unsigned inepnakeff:1;
+		/* IN Endpoint HAK Effective mask */
+		unsigned emptyintr:1;
+		unsigned txfifoundrn:1;
+		unsigned reserved08_31:23;
+		} b;
+};
+
+/*
+ * This union represents the bit fields in the Device OUT EP Interrupt
+ * Registerand Device OUT EP Common Interrupt Mask Register.  Read the register
+ * into the d32 member then set/clear the  bits using the bit elements.
+ */
+union doepint_data {
+	u32 d32;
+	struct {
+		/* Transfer complete */
+		unsigned xfercompl:1;
+		/* Endpoint disable  */
+		unsigned epdisabled:1;
+		/* AHB Error */
+		unsigned ahberr:1;
+		/* Setup Phase Done (contorl EPs) */
+		unsigned setup:1;
+		unsigned reserved04_31:28;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device All EP Interrupt and Mask
+ * Registers.  Read the register into the d32 member then set/clear the bits
+ * using the bit elements.
+ */
+union daint_data {
+	u32 d32;
+	struct {
+		/* IN Endpoint bits */
+		unsigned in:16;
+		/* OUT Endpoint bits */
+		unsigned out:16;
+	} ep;
+	struct {
+		/* IN Endpoint bits */
+		unsigned inep0:1;
+		unsigned inep1:1;
+		unsigned inep2:1;
+		unsigned inep3:1;
+		unsigned inep4:1;
+		unsigned inep5:1;
+		unsigned inep6:1;
+		unsigned inep7:1;
+		unsigned inep8:1;
+		unsigned inep9:1;
+		unsigned inep10:1;
+		unsigned inep11:1;
+		unsigned inep12:1;
+		unsigned inep13:1;
+		unsigned inep14:1;
+		unsigned inep15:1;
+		/* OUT Endpoint bits */
+		unsigned outep0:1;
+		unsigned outep1:1;
+		unsigned outep2:1;
+		unsigned outep3:1;
+		unsigned outep4:1;
+		unsigned outep5:1;
+		unsigned outep6:1;
+		unsigned outep7:1;
+		unsigned outep8:1;
+		unsigned outep9:1;
+		unsigned outep10:1;
+		unsigned outep11:1;
+		unsigned outep12:1;
+		unsigned outep13:1;
+		unsigned outep14:1;
+		unsigned outep15:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device IN Token Queue Read
+ * Registers.  Read the register into the d32 member.  READ-ONLY Register
+ */
+union dtknq1_data {
+	u32 d32;
+	struct {
+		/* In Token Queue Write Pointer */
+		unsigned intknwptr:5;
+		/* Reserved */
+		unsigned reserved05_06:2;
+		/* write pointer has wrapped. */
+		unsigned wrap_bit:1;
+		/* EP Numbers of IN Tokens 0 ... 4 */
+		unsigned epnums0_5:24;
+	} b;
+};
+
+/*
+ * This union represents Threshold control Register Read and write the register
+ * into the d32 member.  READ-WRITABLE Register
+ */
+union dthrctl_data {
+	u32 d32;
+	struct {
+		/* non ISO Tx Thr. Enable */
+		unsigned non_iso_thr_en:1;
+		/* ISO Tx Thr. Enable */
+		unsigned iso_thr_en:1;
+		/* Tx Thr. Length */
+		unsigned tx_thr_len:9;
+		/* Reserved */
+		unsigned reserved11_15:5;
+		/* Rx Thr. Enable */
+		unsigned rx_thr_en:1;
+		/* Rx Thr. Length */
+		unsigned rx_thr_len:9;
+		/* Reserved */
+		unsigned reserved26_31:6;
+	} b;
+};
+
+/*
+ * Device Logical IN Endpoint-Specific Registers. Offsets 900h-AFCh
+ *
+ * There will be one set of endpoint registers per logical endpoint implemented.
+ *
+ * These registers are visible only in Device mode and must not be accessed in
+ * Host mode, as the results are unknown.
+ */
+struct device_in_ep_regs {
+	/*
+	 * Device IN Endpoint Control Register.
+	 * Offset: 900h + (ep_num * 20h) + 00h
+	 */
+	u32 diepctl;
+	/* Reserved. Offset:900h + (ep_num * 20h) + 04h */
+	u32 reserved04;
+	/*
+	 * Device IN Endpoint Interrupt Register.
+	 * Offset: 900h + (ep_num * 20h) + 08h
+	 */
+	u32 diepint;
+	/* Reserved. Offset:900h + (ep_num * 20h) + 0Ch */
+	u32 reserved0C;
+	/*
+	 * Device IN Endpoint Transfer Size Register.
+	 * Offset: 900h + (ep_num * 20h) + 10h
+	 */
+	u32 dieptsiz;
+	/*
+	 * Device IN Endpoint DMA Address Register.
+	 * Offset: 900h + (ep_num * 20h) + 14h
+	 */
+	u32 diepdma;
+	/*
+	 * Device IN Endpoint Transmit FIFO Status Register.
+	 * Offset: 900h + (ep_num * 20h) + 18h
+	 */
+	u32 dtxfsts;
+	/*
+	 * Reserved.
+	 * Offset: 900h + (ep_num * 20h) + 1Ch - 900h + (ep_num * 20h) + 1Ch
+	 */
+	u32 reserved18;
+};
+
+/*
+ * Device Logical OUT Endpoint-Specific Registers. Offsets: B00h-CFCh
+ *
+ * There will be one set of endpoint registers per logical endpoint implemented.
+ *
+ * These registers are visible only in Device mode and must not be accessed in
+ * Host mode, as the results are unknown.
+ */
+struct device_out_ep_regs {
+	/*
+	 * Device OUT Endpoint Control Register.
+	 * Offset: B00h + (ep_num * 20h) + 00h
+	 */
+	u32 doepctl;
+	/*
+	 * Device OUT Endpoint Frame number Register.
+	 * Offset: B00h + (ep_num * 20h) + 04h
+	 */
+	u32 doepfn;
+	/*
+	 * Device OUT Endpoint Interrupt Register.
+	 * Offset: B00h + (ep_num * 20h) + 08h
+	 */
+	u32 doepint;
+	/* Reserved. Offset:B00h + (ep_num * 20h) + 0Ch */
+	u32 reserved0C;
+	/*
+	 * Device OUT Endpoint Transfer Size Register.
+	 * Offset: B00h + (ep_num * 20h) + 10h
+	 */
+	u32 doeptsiz;
+	/*
+	 * Device OUT Endpoint DMA Address Register.
+	 * Offset: B00h + (ep_num * 20h) + 14h
+	 */
+	u32 doepdma;
+	/*
+	 * Reserved.
+	 * Offset:B00h + (ep_num * 20h) + 18h - B00h + (ep_num * 20h) + 1Ch
+	 */
+	u32 unused[2];
+};
+
+/*
+ * This union represents the bit fields in the Device EP Control Register.  Read
+ * the register into the d32 member then set/clear the bits using the bit
+ * elements.
+ */
+union depctl_data {
+	u32 d32;
+	struct {
+		/* Maximum Packet Size
+		 * IN/OUT EPn
+		 * IN/OUT EP0 - 2 bits
+		 *	 2'b00: 64 Bytes
+		 *	 2'b01: 32
+		 *	 2'b10: 16
+		 *	 2'b11: 8
+		 */
+		unsigned mps:11;
+#define DWC_DEP0CTL_MPS_64			0
+#define DWC_DEP0CTL_MPS_32			1
+#define DWC_DEP0CTL_MPS_16			2
+#define DWC_DEP0CTL_MPS_8			3
+
+		/*
+		 * Next Endpoint
+		 * IN EPn/IN EP0
+		 * OUT EPn/OUT EP0 - reserved
+		 */
+		unsigned nextep:4;
+		/* USB Active Endpoint */
+		unsigned usbactep:1;
+		/*
+		 * Endpoint DPID (INTR/Bulk IN and OUT endpoints) This field
+		 * contains the PID of the packet going to be received or
+		 * transmitted on this endpoint. The application should program
+		 * the PID of the first packet going to be received or
+		 * transmitted on this endpoint , after the endpoint is
+		 * activated. Application use the SetD1PID and SetD0PID fields
+		 * of this register to program either D0 or D1 PID.
+		 *
+		 * The encoding for this field is
+		 *	 - 0: D0
+		 *	 - 1: D1
+		 */
+		unsigned dpid:1;
+		/* NAK Status */
+		unsigned naksts:1;
+		/* Endpoint Type
+		 *	2'b00: Control
+		 *	2'b01: Isochronous
+		 *	2'b10: Bulk
+		 *	2'b11: Interrupt
+		 */
+		unsigned eptype:2;
+		/*
+		 * Snoop Mode
+		 * OUT EPn/OUT EP0
+		 * IN EPn/IN EP0 - reserved
+		 */
+		unsigned snp:1;
+		/* Stall Handshake */
+		unsigned stall:1;
+		/*
+		 * Tx Fifo Number
+		 * IN EPn/IN EP0
+		 * OUT EPn/OUT EP0 - reserved
+		 */
+		unsigned txfnum:4;
+		/* Clear NAK */
+		unsigned cnak:1;
+		/* Set NAK */
+		unsigned snak:1;
+		/*
+		 * Set DATA0 PID (INTR/Bulk IN and OUT endpoints)
+		 *
+		 * Writing to this field sets the Endpoint DPID (DPID) field in
+		 * this register to DATA0. Set Even (micro)frame (SetEvenFr)
+		 * (ISO IN and OUT Endpoints)
+		 *
+		 * Writing to this field sets the Even/Odd (micro)frame
+		 * (EO_FrNum) field to even (micro) frame.
+		 */
+		unsigned setd0pid:1;
+		/*
+		 * Set DATA1 PID (INTR/Bulk IN and OUT endpoints)
+		 *
+		 * Writing to this field sets the Endpoint DPID (DPID) field in
+		 * this register to DATA1 Set Odd (micro)frame (SetOddFr) (ISO
+		 * IN and OUT Endpoints)
+		 *
+		 * Writing to this field sets the Even/Odd (micro)frame
+		 * (EO_FrNum) field to odd (micro) frame.
+		 */
+		unsigned setd1pid:1;
+		/* Endpoint Disable */
+		unsigned epdis:1;
+		/* Endpoint Enable */
+		unsigned epena:1;
+		} b;
+};
+
+/*
+ * This union represents the bit fields in the Device EP Transfer Size Register.
+ * Read the register into the d32 member then set/clear the bits using the bit
+ * elements.
+ */
+union deptsiz_data {
+	u32 d32;
+	struct {
+		/* Transfer size */
+		unsigned xfersize:19;
+		/* Packet Count */
+		unsigned pktcnt:10;
+		/* Multi Count - Periodic IN endpoints */
+		unsigned mc:2;
+		unsigned reserved:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Device EP 0 Transfer Size
+ * Register.  Read the register into the d32 member then set/clear the bits
+ * using the bit elements.
+ */
+union deptsiz0_data {
+	u32 d32;
+	struct {
+		/* Transfer size */
+		unsigned xfersize:7;
+		/* Reserved */
+		unsigned reserved7_18:12;
+		/* Packet Count */
+		unsigned pktcnt:2;
+		/* Reserved */
+		unsigned reserved21_28:9;
+		/* Setup Packet Count (DOEPTSIZ0 Only) */
+		unsigned supcnt:2;
+		unsigned reserved31;
+	} b;
+};
+
+#define MAX_PERIO_FIFOS			15	/* Max periodic FIFOs */
+#define MAX_TX_FIFOS			15	/* Max non-periodic FIFOs */
+#define MAX_EPS_CHANNELS		4	/* Max Endpoints/HostChannels */
+
+/*
+ * The device_if structure contains information needed to manage the
+ * DWC_otg controller acting in device mode. It represents the programming view
+ * of the device-specific aspects of the controller.
+ */
+struct device_if {
+	/* Device Global Registers starting at offset 800h */
+	struct device_global_regs *dev_global_regs;
+#define DWC_DEV_GLOBAL_REG_OFFSET		0x800
+
+	/* Device Logical IN Endpoint-Specific Registers 900h-AFCh */
+	struct device_in_ep_regs *in_ep_regs[MAX_EPS_CHANNELS/2];
+#define DWC_DEV_IN_EP_REG_OFFSET		0x900
+#define DWC_EP_REG_OFFSET			0x20
+
+	/* Device Logical OUT Endpoint-Specific Registers B00h-CFCh */
+	struct device_out_ep_regs *out_ep_regs[MAX_EPS_CHANNELS/2];
+#define DWC_DEV_OUT_EP_REG_OFFSET		0xB00
+
+	/* Device Speed		0: Unknown, 1: LS, 2:FS, 3: HS */
+	u8 speed;
+	/* Number # of Tx EP range: 0-15 exept ep0 */
+	u8 num_in_eps;
+	/* Number # of Rx EP range: 0-15 exept ep0 */
+	u8 num_out_eps;
+
+	/* Size of periodic FIFOs (Bytes) */
+	u16 perio_tx_fifo_size[MAX_PERIO_FIFOS];
+
+	/* Size of Tx FIFOs (Bytes) */
+	u16 tx_fifo_size[MAX_TX_FIFOS];
+
+	/* Thresholding enable flags and length varaiables */
+	u16 rx_thr_en;
+	u16 iso_tx_thr_en;
+	u16 non_iso_tx_thr_en;
+	u16 rx_thr_length;
+	u16 tx_thr_length;
+};
+
+/*
+ * The Host Global Registers structure defines the size and relative
+ * field offsets for the Host Mode Global Registers.  Host Global
+ * Registers offsets 400h-7FFh.
+*/
+struct host_global_regs {
+	/* Host Configuration Register.   Offset: 400h */
+	u32 hcfg;
+	/* Host Frame Interval Register.	Offset: 404h */
+	u32 hfir;
+	/* Host Frame Number / Frame Remaining Register. Offset: 408h */
+	u32 hfnum;
+       /* Reserved.	Offset: 40Ch */
+	u32 reserved40C;
+	/* Host Periodic Transmit FIFO/ Queue Status Register. Offset: 410h */
+	u32 hptxsts;
+	/* Host All Channels Interrupt Register. Offset: 414h */
+	u32 haint;
+	/* Host All Channels Interrupt Mask Register. Offset: 418h */
+	u32 haintmsk;
+};
+
+/*
+ * This union represents the bit fields in the Host Configuration Register.
+ * Read the register into the d32 member then set/clear the bits using
+ * the bit elements. Write the d32 member to the hcfg register.
+ */
+union hcfg_data {
+	u32 d32;
+	struct {
+		/* FS/LS Phy Clock Select */
+		unsigned fslspclksel:2;
+#define DWC_HCFG_30_60_MHZ			0
+#define DWC_HCFG_48_MHZ				1
+#define DWC_HCFG_6_MHZ				2
+
+		/* FS/LS Only Support */
+		unsigned fslssupp:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host Frame Remaing/Number
+ * Register.
+ */
+union hfir_data {
+	u32 d32;
+	struct {
+		unsigned frint:16;
+		unsigned reserved:16;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host Frame Remaing/Number
+ * Register.
+ */
+union hfnum_data {
+	u32 d32;
+	struct {
+		unsigned frnum:16;
+#define DWC_HFNUM_MAX_FRNUM			0x3FFF
+		unsigned frrem:16;
+	} b;
+};
+
+union hptxsts_data {
+	u32 d32;
+	struct {
+		unsigned ptxfspcavail:16;
+		unsigned ptxqspcavail:8;
+		/*
+		 * Top of the Periodic Transmit Request Queue
+		 *	- bit 24 - Terminate (last entry of selected channel)
+		 *	- bits 26:25 - Token Type
+		 *	  - 2'b00 - Zero length
+		 *	  - 2'b01 - Ping
+		 *	  - 2'b10 - Disable
+		 *	- bits 30:27 - Channel Number
+		 *	- bit 31 - Odd/even microframe
+		 */
+		unsigned ptxqtop_terminate:1;
+		unsigned ptxqtop_token:2;
+		unsigned ptxqtop_chnum:4;
+		unsigned ptxqtop_odd:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host Port Control and Status
+ * Register. Read the register into the d32 member then set/clear the bits using
+ * the bit elements. Write the d32 member to the hprt0 register.
+ */
+union hprt0_data {
+	u32 d32;
+	struct {
+		unsigned prtconnsts:1;
+		unsigned prtconndet:1;
+		unsigned prtena:1;
+		unsigned prtenchng:1;
+		unsigned prtovrcurract:1;
+		unsigned prtovrcurrchng:1;
+		unsigned prtres:1;
+		unsigned prtsusp:1;
+		unsigned prtrst:1;
+		unsigned reserved9:1;
+		unsigned prtlnsts:2;
+		unsigned prtpwr:1;
+		unsigned prttstctl:4;
+		unsigned prtspd:2;
+#define DWC_HPRT0_PRTSPD_HIGH_SPEED		0
+#define DWC_HPRT0_PRTSPD_FULL_SPEED		1
+#define DWC_HPRT0_PRTSPD_LOW_SPEED		2
+		unsigned reserved19_31:13;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host All Interrupt Register.
+ */
+union haint_data {
+	u32 d32;
+	struct {
+		unsigned ch0:1;
+		unsigned ch1:1;
+		unsigned ch2:1;
+		unsigned ch3:1;
+		unsigned ch4:1;
+		unsigned ch5:1;
+		unsigned ch6:1;
+		unsigned ch7:1;
+		unsigned ch8:1;
+		unsigned ch9:1;
+		unsigned ch10:1;
+		unsigned ch11:1;
+		unsigned ch12:1;
+		unsigned ch13:1;
+		unsigned ch14:1;
+		unsigned ch15:1;
+		unsigned reserved:16;
+	} b;
+
+	struct {
+		unsigned chint:16;
+		unsigned reserved:16;
+	} b2;
+};
+
+/*
+ * This union represents the bit fields in the Host All Interrupt Register.
+ */
+union haintmsk_data {
+	u32 d32;
+	struct {
+		unsigned ch0:1;
+		unsigned ch1:1;
+		unsigned ch2:1;
+		unsigned ch3:1;
+		unsigned ch4:1;
+		unsigned ch5:1;
+		unsigned ch6:1;
+		unsigned ch7:1;
+		unsigned ch8:1;
+		unsigned ch9:1;
+		unsigned ch10:1;
+		unsigned ch11:1;
+		unsigned ch12:1;
+		unsigned ch13:1;
+		unsigned ch14:1;
+		unsigned ch15:1;
+		unsigned reserved:16;
+	} b;
+
+	struct {
+		unsigned chint:16;
+		unsigned reserved:16;
+	} b2;
+};
+
+/*
+ * Host Channel Specific Registers. 500h-5FCh
+ */
+struct dwc_hc_regs {
+	/*
+	 * Host Channel 0 Characteristic Register.
+	 * Offset: 500h + (chan_num * 20h) + 00h
+	 */
+	u32 hcchar;
+	/*
+	 * Host Channel 0 Split Control Register.
+	 * Offset: 500h + (chan_num * 20h) + 04h
+	 */
+	u32 hcsplt;
+	/*
+	 * Host Channel 0 Interrupt Register.
+	 * Offset: 500h + (chan_num * 20h) + 08h
+	 */
+	u32 hcint;
+	/*
+	 * Host Channel 0 Interrupt Mask Register.
+	 * Offset: 500h + (chan_num * 20h) + 0Ch
+	 */
+	u32 hcintmsk;
+	/*
+	 * Host Channel 0 Transfer Size Register.
+	 * Offset: 500h + (chan_num * 20h) + 10h
+	 */
+	u32 hctsiz;
+	/*
+	 * Host Channel 0 DMA Address Register.
+	 * Offset: 500h + (chan_num * 20h) + 14h
+	 */
+	u32 hcdma;
+	/* Reserved.
+	 * Offset: 500h + (chan_num * 20h) + 18h - 500h + (chan_num * 20h) + 1Ch
+	 */
+	u32 reserved[2];
+};
+
+/*
+ * This union represents the bit fields in the Host Channel Characteristics
+ * Register. Read the register into the d32 member then set/clear the bits using
+ * the bit elements. Write the d32 member to the hcchar register.
+ */
+union hcchar_data {
+	u32 d32;
+	struct {
+		/* Maximum packet size in bytes */
+		unsigned mps:11;
+		/* Endpoint number */
+		unsigned epnum:4;
+		/* 0: OUT, 1: IN */
+		unsigned epdir:1;
+		unsigned reserved:1;
+		/* 0: Full/high speed device, 1: Low speed device */
+		unsigned lspddev:1;
+		/* 0: Control, 1: Isoc, 2: Bulk, 3: Intr */
+		unsigned eptype:2;
+		/* Packets per frame for periodic transfers. 0 is reserved. */
+		unsigned multicnt:2;
+		/* Device address */
+		unsigned devaddr:7;
+		/*
+		 * Frame to transmit periodic transaction.
+		 * 0: even, 1: odd
+		 */
+		unsigned oddfrm:1;
+		/* Channel disable */
+		unsigned chdis:1;
+		/* Channel enable */
+		unsigned chen:1;
+	} b;
+};
+
+union hcsplt_data {
+	u32 d32;
+	struct {
+		/* Port Address */
+		unsigned prtaddr:7;
+		/* Hub Address */
+		unsigned hubaddr:7;
+		/* Transaction Position */
+		unsigned xactpos:2;
+#define DWC_HCSPLIT_XACTPOS_MID			0
+#define DWC_HCSPLIT_XACTPOS_END			1
+#define DWC_HCSPLIT_XACTPOS_BEGIN		2
+#define DWC_HCSPLIT_XACTPOS_ALL			3
+
+		/* Do Complete Split */
+		unsigned compsplt:1;
+		/* Reserved */
+		unsigned reserved:14;
+		/* Split Enble */
+		unsigned spltena:1;
+	} b;
+};
+
+
+/*
+ * This union represents the bit fields in the Host All Interrupt Register.
+ */
+union hcint_data {
+	u32 d32;
+	struct {
+		/* Transfer Complete */
+		unsigned xfercomp:1;
+		/* Channel Halted */
+		unsigned chhltd:1;
+		/* AHB Error */
+		unsigned ahberr:1;
+		/* STALL Response Received */
+		unsigned stall:1;
+		/* NAK Response Received */
+		unsigned nak:1;
+		/* ACK Response Received */
+		unsigned ack:1;
+		/* NYET Response Received */
+		unsigned nyet:1;
+		/* Transaction Err */
+		unsigned xacterr:1;
+		/* Babble Error */
+		unsigned bblerr:1;
+		/* Frame Overrun */
+		unsigned frmovrun:1;
+		/* Data Toggle Error */
+		unsigned datatglerr:1;
+		/* Reserved */
+		unsigned reserved:21;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host Channel Transfer Size
+ * Register. Read the register into the d32 member then set/clear the bits using
+ * the bit elements. Write the d32 member to the hcchar register.
+ */
+union hctsiz_data {
+	u32 d32;
+	struct {
+		/* Total transfer size in bytes */
+		unsigned xfersize:19;
+		/* Data packets to transfer */
+		unsigned pktcnt:10;
+		/*
+		 * Packet ID for next data packet
+		 * 0: DATA0
+		 * 1: DATA2
+		 * 2: DATA1
+		 * 3: MDATA (non-Control), SETUP (Control)
+		 */
+		unsigned pid:2;
+#define DWC_HCTSIZ_DATA0			0
+#define DWC_HCTSIZ_DATA1			2
+#define DWC_HCTSIZ_DATA2			1
+#define DWC_HCTSIZ_MDATA			3
+#define DWC_HCTSIZ_SETUP			3
+
+		/* Do PING protocol when 1 */
+		unsigned dopng:1;
+	} b;
+};
+
+/*
+ * This union represents the bit fields in the Host Channel Interrupt Mask
+ * Register. Read the register into the d32 member then set/clear the bits using
+ * the bit elements. Write the d32 member to the hcintmsk register.
+ */
+union hcintmsk_data {
+	u32 d32;
+	struct {
+		unsigned xfercompl:1;
+		unsigned chhltd:1;
+		unsigned ahberr:1;
+		unsigned stall:1;
+		unsigned nak:1;
+		unsigned ack:1;
+		unsigned nyet:1;
+		unsigned xacterr:1;
+		unsigned bblerr:1;
+		unsigned frmovrun:1;
+		unsigned datatglerr:1;
+		unsigned reserved:21;
+	} b;
+};
+
+/* OTG Host Interface Structure.
+ *
+ * The OTG Host Interface Structure structure contains information needed to
+ * manage the DWC_otg controller acting in host mode. It represents the
+ * programming view of the host-specific aspects of the controller.
+ */
+struct dwc_host_if {
+	/* Host Global Registers starting at offset 400h.*/
+	struct host_global_regs *host_global_regs;
+#define DWC_OTG_HOST_GLOBAL_REG_OFFSET			0x400
+
+	/* Host Port 0 Control and Status Register */
+	u32 *hprt0;
+#define DWC_OTG_HOST_PORT_REGS_OFFSET			0x440
+
+	/* Host Channel Specific Registers at offsets 500h-5FCh. */
+	struct dwc_hc_regs *hc_regs[MAX_EPS_CHANNELS];
+#define DWC_OTG_HOST_CHAN_REGS_OFFSET			0x500
+#define DWC_OTG_CHAN_REGS_OFFSET			0x20
+
+	/* Host configuration information */
+	/* Number of Host Channels (range: 1-16) */
+	u8 num_host_channels;
+	/* Periodic EPs supported (0: no, 1: yes) */
+	u8 perio_eps_supported;
+	/* Periodic Tx FIFO Size (Only 1 host periodic Tx FIFO) */
+	u16 perio_tx_fifo_size;
+};
+
+/*
+ * This union represents the bit fields in the Power and Clock Gating Control
+ * Register. Read the register into the d32 member then set/clear the bits using
+ * the bit elements.
+ */
+union pcgcctl_data {
+	u32 d32;
+	struct {
+		/* Stop Pclk */
+		unsigned stoppclk:1;
+		/* Gate Hclk */
+		unsigned gatehclk:1;
+		/* Power Clamp */
+		unsigned pwrclmp:1;
+		/* Reset Power Down Modules */
+		unsigned rstpdwnmodule:1;
+		/* PHY Suspended */
+		unsigned physuspended:1;
+		unsigned reserved:27;
+	} b;
+};
+
+#endif /* CONFIG_DWC_OTG_REG_LE */
+#endif
-- 
1.6.0.1

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