[U-Boot] [PATCH v5] ulpi: add generic ULPI functionality

[Igor Grinberg]

On 11/28/11 02:19, Jana Rapava wrote:
> Add generic functions for reading, writing and setting bits in ULPI registers.
> 
> Signed-off-by: Jana Rapava <fermata7 at gmail.com>
> Cc: Remy Bohmer <linux at bohmer.net>
> Cc: Stefano Babic <sbabic at denx.de>
> Cc: Igor Grinberg <grinberg at compulab.co.il>
> Cc: Wolfgang Grandegger <wg at denx.de>
> Cc: Simon Glass <sjg at chromium.org>

Several improvements can still be made (mostly internal to that driver),
but this can be done by a follow up patch, meanwhile
patch sets that depend on this one can be merged.

Acked-by: Igor Grinberg <grinberg at compulab.co.il>

> ---
> Changes for v2:
>       - make code EHCI-independent
>       - use udelay() in waiting loop
>       - mark static functions as static
>       - naming changes
> Changes for v3:
>        - merge with patch ulpi: add generic ULPI support header file
>        - rewrite ULPI interface in more functionality-oriented way
> Changes for v4:
>        - add error-checking
>        - add waiting for completion into ulpi_reset() function
> Changes for v5:
>         - CodingStyle changes
>         - add comments
>         - simplify implemenation of the ULPI interface functions
> 
>  Makefile                         |    1 +
>  drivers/usb/ulpi/Makefile        |   45 +++++++
>  drivers/usb/ulpi/ulpi-viewport.c |  114 ++++++++++++++++++
>  drivers/usb/ulpi/ulpi.c          |  158 +++++++++++++++++++++++++
>  include/usb/ulpi.h               |  238 ++++++++++++++++++++++++++++++++++++++
>  5 files changed, 556 insertions(+), 0 deletions(-)
>  create mode 100644 drivers/usb/ulpi/Makefile
>  create mode 100644 drivers/usb/ulpi/ulpi-viewport.c
>  create mode 100644 drivers/usb/ulpi/ulpi.c
>  create mode 100644 include/usb/ulpi.h
> 
> diff --git a/Makefile b/Makefile
> index dfe939f..70a1e1e 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -272,6 +272,7 @@ LIBS += drivers/usb/gadget/libusb_gadget.o
>  LIBS += drivers/usb/host/libusb_host.o
>  LIBS += drivers/usb/musb/libusb_musb.o
>  LIBS += drivers/usb/phy/libusb_phy.o
> +LIBS += drivers/usb/ulpi/libusb_ulpi.o
>  LIBS += drivers/video/libvideo.o
>  LIBS += drivers/watchdog/libwatchdog.o
>  LIBS += common/libcommon.o
> diff --git a/drivers/usb/ulpi/Makefile b/drivers/usb/ulpi/Makefile
> new file mode 100644
> index 0000000..a1a2244
> --- /dev/null
> +++ b/drivers/usb/ulpi/Makefile
> @@ -0,0 +1,45 @@
> +#
> +# Copyright (C) 2011 Jana Rapava <fermata7 at gmail.com>
> +# See file CREDITS for list of people who contributed to this
> +# project.
> +#
> +# 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.
> +#
> +# 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., 59 Temple Place, Suite 330, Boston,
> +# MA 02111-1307 USA
> +#
> +
> +include $(TOPDIR)/config.mk
> +
> +LIB	:= $(obj)libusb_ulpi.o
> +
> +COBJS-$(CONFIG_USB_ULPI)		+= ulpi.o
> +COBJS-$(CONFIG_USB_ULPI_VIEWPORT)	+= ulpi-viewport.o
> +
> +COBJS	:= $(COBJS-y)
> +SRCS	:= $(COBJS:.o=.c)
> +OBJS	:= $(addprefix $(obj),$(COBJS))
> +
> +all:	$(LIB)
> +
> +$(LIB):	$(obj).depend $(OBJS)
> +	$(call cmd_link_o_target, $(OBJS))
> +
> +#########################################################################
> +
> +# defines $(obj).depend target
> +include $(SRCTREE)/rules.mk
> +
> +sinclude $(obj).depend
> +
> +#########################################################################
> diff --git a/drivers/usb/ulpi/ulpi-viewport.c b/drivers/usb/ulpi/ulpi-viewport.c
> new file mode 100644
> index 0000000..7764939
> --- /dev/null
> +++ b/drivers/usb/ulpi/ulpi-viewport.c
> @@ -0,0 +1,114 @@
> +/*
> + * Copyright (C) 2011 Jana Rapava <fermata7 at gmail.com>
> + * Based on:
> + * linux/drivers/usb/otg/ulpi_viewport.c
> + *
> + * Original Copyright follow:
> + * Copyright (C) 2011 Google, Inc.
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * 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 <common.h>
> +#include <asm/io.h>
> +#include <usb/ulpi.h>
> +
> +/* ULPI viewport control bits */
> +#define ULPI_WU		(1 << 31)
> +#define ULPI_SS		(1 << 27)
> +#define ULPI_RWRUN	(1 << 30)
> +#define ULPI_RWCTRL	(1 << 29)
> +
> +#define ULPI_ADDR_SHIFT		16
> +#define ulpi_write_mask(value)	((value) & 0xff)
> +#define ulpi_read_mask(value)	(((value) >> 8) & 0xff)
> +
> +/* This function issues ULPI wakeup/read-write request
> + * and waits until ULPI interface signalizes completion.
> + * 'ulpi_value' is properly constructed ULPI request,
> + * 'ulpi_mask' is ULPI_WU for wakeup, ULPI_RWRUN for read or write.
> + */
> +static int ulpi_request(u32 ulpi_viewport, u32 ulpi_value, u32 ulpi_mask)
> +{
> +	int timeout = CONFIG_USB_ULPI_TIMEOUT;
> +	u32 tmp;
> +
> +	writel(ulpi_value, ulpi_viewport);
> +
> +	/* Wait for the bits in ulpi_mask to become zero. */
> +	while (--timeout) {
> +		tmp = readl(ulpi_viewport);
> +		if (!(tmp & ulpi_mask))
> +			return 0;
> +		udelay(1);
> +	}
> +
> +	return ULPI_ERROR;
> +}
> +
> +/* If ULPI bus isn't already awake, issue wakeup request via ulpi_request(). */
> +static int ulpi_wakeup(u32 ulpi_viewport)
> +{
> +	if (readl(ulpi_viewport) & ULPI_SS)
> +		return 0; /* already awake */
> +
> +	return ulpi_request(ulpi_viewport, ULPI_WU, ULPI_WU);
> +}
> +
> +/*
> + * Wakeup ULPI interface and, if successful, create and issue
> + * ULPI write request via ulpi_request().
> + * 'reg' is pointer to member of structure ulpi_regs
> + * 'value' is value to be written.
> + */
> +u32 ulpi_write(u32 ulpi_viewport, u8 *reg, u32 value)
> +{
> +	u32 tmp;
> +
> +	if (ulpi_wakeup(ulpi_viewport)) {
> +		printf("ULPI wakeup timed out\n");
> +		return ULPI_ERROR;
> +	}
> +
> +	tmp = ulpi_request(ulpi_viewport, ULPI_RWRUN | ULPI_RWCTRL |
> +		(u32)reg << ULPI_ADDR_SHIFT | ulpi_write_mask(value),
> +		ULPI_RWRUN);
> +	if (tmp)
> +		printf("ULPI write timed out\n");
> +
> +	return tmp;
> +}
> +
> +/*
> + * Wakeup ULPI interface and, if successful, create and issue
> + * ULPI read request via ulpi_request().
> + * 'reg' is pointer to member of structure ulpi_regs.
> + * Return value is value which was read, or ULPI_ERROR if wakeup or read
> + * request timed out.
> + */
> +u32 ulpi_read(u32 ulpi_viewport, u8 *reg)
> +{
> +	u32 tmp;
> +
> +	if (ulpi_wakeup(ulpi_viewport)) {
> +		printf("ULPI wakeup timed out\n");
> +		return ULPI_ERROR;
> +	}
> +
> +	tmp = ulpi_request(ulpi_viewport, ULPI_RWRUN |
> +		(u32)reg << ULPI_ADDR_SHIFT, ULPI_RWRUN);
> +	if (tmp) {
> +		printf("ULPI read timed out\n");
> +		return tmp;
> +	}
> +
> +	return ulpi_read_mask(readl(ulpi_viewport));
> +}
> diff --git a/drivers/usb/ulpi/ulpi.c b/drivers/usb/ulpi/ulpi.c
> new file mode 100644
> index 0000000..c4dc408
> --- /dev/null
> +++ b/drivers/usb/ulpi/ulpi.c
> @@ -0,0 +1,158 @@
> +/*
> + * Copyright (C) 2011 Jana Rapava <fermata7 at gmail.com>
> + * Based on:
> + * linux/drivers/usb/otg/ulpi.c
> + * Generic ULPI USB transceiver support
> + *
> + * Original Copyright follow:
> + * Copyright (C) 2009 Daniel Mack <daniel at caiaq.de>
> + *
> + * Based on sources from
> + *
> + *   Sascha Hauer <s.hauer at pengutronix.de>
> + *   Freescale Semiconductors
> + *
> + * 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 <common.h>
> +#include <exports.h>
> +#include <usb/ulpi.h>
> +
> +static struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
> +
> +static int ulpi_integrity_check(u32 ulpi_viewport)
> +{
> +	u32 tmp = 0;
> +	int i;
> +
> +	/*
> +	 * Write at and read from 3 parts of the Scratch Register
> +	 * (8 bits each).
> +	 */
> +	for (i = 0; i < 2; i++) {
> +		ulpi_write(ulpi_viewport, &ulpi->scratch,
> +			ULPI_TEST_VALUE << i);
> +		tmp = ulpi_read(ulpi_viewport, &ulpi->scratch);
> +
> +		if (tmp != (ULPI_TEST_VALUE << i)) {
> +			printf("ULPI integrity check failed\n");
> +			return ULPI_ERROR;
> +		}
> +	}
> +	return 0;
> +}
> +
> +/* Identify ULPI transceiver, perform integrity check. */
> +int ulpi_init(u32 ulpi_viewport)
> +{
> +	u32 tmp = 0;
> +	int reg;
> +
> +	/* Assemble ID from four ULPI ID registers (8 bits each). */
> +	for (reg = ULPI_ID_REGS_COUNT - 1; reg >= 0; reg--)
> +		tmp |= ulpi_read(ulpi_viewport, (u8 *)reg) << (reg * 8);
> +
> +	/* Split ID into vendor and product ID. */
> +	debug("Found ULPI transceiver ID %04x:%04x\n", tmp >> 16, tmp & 0xffff);
> +
> +	return ulpi_integrity_check(ulpi_viewport);
> +}
> +
> +/*
> + * This function is used to select transceiver speed.
> + * Accepted 'speed' values are:
> + * ULPI_FC_HIGH_SPEED, ULPI_FC_FULL_SPEED, ULPI_FC_LOW_SPEED, ULPI_FC_FS4LS
> + * (FS transceiver for LS packets).
> + * Default value is ULPI_FC_FULL_SPEED.
> + */
> +int ulpi_select_transceiver(u32 ulpi_viewport, int speed)
> +{
> +	return ulpi_write(ulpi_viewport, &ulpi->function_ctrl_set, speed);
> +}
> +
> +/*
> + * Signals that 5V is driven to VBUS.
> + * 'ext_power_supply' is 1, if we use external supply instead of
> + * internal charge pump(which is default).
> + * 'use_ext_indicator' is 1, if we use external VBUS over-current indicator.
> + */
> +int ulpi_drive_vbus(u32 ulpi_viewport,
> +	int ext_power_supply, int use_ext_indicator)
> +{
> +	int flags = ULPI_OTG_DRVVBUS |
> +		(ext_power_supply) ? ULPI_OTG_DRVVBUS_EXT : 0 |
> +		(use_ext_indicator) ? ULPI_OTG_EXTVBUSIND : 0;
> +
> +	return ulpi_write(ulpi_viewport, &ulpi->otg_ctrl_set, flags);
> +}
> +
> +/*
> + * If enable is 0, pull-down resistors not connected to D+ and D-,
> + * else pull-down resistors connected to D+ and D-.
> + * Default behaviour is as for enable equal to 1.
> + */
> +int ulpi_pulldown(u32 ulpi_viewport, int enable)
> +{
> +	u8 *reg = (enable) ? &ulpi->otg_ctrl_set
> +		: &ulpi->otg_ctrl_clear;
> +
> +	return ulpi_write(ulpi_viewport, reg,
> +		ULPI_OTG_DP_PULLDOWN | ULPI_OTG_DM_PULLDOWN);
> +}
> +
> +/*
> + * This function is used to select bit encoding style.
> + * Accepted 'opmode' values are:
> + * ULPI_FC_OPMODE_NORMAL, ULPI_FC_OPMODE_NONDRIVING,
> + * ULPI_FC_OPMODE_DISABLE_NRZI, ULPI_FC_OPMODE_NOSYNC_NOEOP.
> + * Default value is ULPI_FC_OPMODE_NORMAL.
> + */
> +int ulpi_select_opmode(u32 ulpi_viewport, int opmode)
> +{
> +	return ulpi_write(ulpi_viewport, &ulpi->function_ctrl_set, opmode);
> +}
> +
> +/* Put PHY into low power mode. */
> +int ulpi_suspend(u32 ulpi_viewport)
> +{
> +	return ulpi_write(ulpi_viewport, &ulpi->function_ctrl_clear,
> +		ULPI_FC_SUSPENDM);
> +}
> +
> +/* Put PHY out of low power mode. */
> +int ulpi_resume(u32 ulpi_viewport)
> +{
> +	return ulpi_write(ulpi_viewport, &ulpi->function_ctrl_set,
> +		ULPI_FC_SUSPENDM);
> +}
> +
> +/* Reset transceiver, does not reset ULPI interface or ULPI register set. */
> +int ulpi_reset(u32 ulpi_viewport)
> +{
> +	int timeout = CONFIG_USB_ULPI_TIMEOUT;
> +	u32 tmp;
> +	int ret = ulpi_write(ulpi_viewport, &ulpi->function_ctrl_set,
> +		ULPI_FC_RESET);
> +
> +	if (ret)
> +		return ret;
> +
> +	/* Wait for the RESET bit to become zero. */
> +	while (--timeout) {
> +		tmp = ulpi_read(ulpi_viewport, &ulpi->function_ctrl);
> +		if (!(tmp & ULPI_FC_RESET))
> +			return 0;
> +		udelay(1);
> +	}
> +
> +	return ULPI_ERROR;
> +}
> diff --git a/include/usb/ulpi.h b/include/usb/ulpi.h
> new file mode 100644
> index 0000000..d7b37a6
> --- /dev/null
> +++ b/include/usb/ulpi.h
> @@ -0,0 +1,238 @@
> +/*
> + * Copyright (C) 2011 Jana Rapava <fermata7 at gmail.com>
> + * Based on:
> + * linux/include/linux/usb/ulpi.h
> + * ULPI defines and function prototypes
> + *
> + * Original Copyrights follow:
> + * Copyright (C) 2010 Nokia Corporation
> + *
> + * This software is distributed under the terms of the GNU General
> + * Public License ("GPL") as published by the Free Software Foundation,
> + * version 2 of that License.
> + */
> +
> +#ifndef __USB_ULPI_H
> +#define __USB_ULPI_H
> +
> +#define ULPI_ID_REGS_COUNT	4
> +#define ULPI_TEST_VALUE		0x55
> +/* value greater than 0xff indicates failure */
> +#define ULPI_ERROR		(1 << 8)
> +
> +/* ULPI viewport control bits */
> +#define ULPI_WU		(1 << 31)
> +#define ULPI_SS		(1 << 27)
> +#define ULPI_RWRUN	(1 << 30)
> +#define ULPI_RWCTRL	(1 << 29)
> +
> +/* ULPI access modes */
> +#define ULPI_WRITE	0x00
> +#define ULPI_SET	0x01
> +#define ULPI_CLEAR	0x02
> +
> +struct ulpi_regs {
> +	/* Vendor ID and Product ID: 0x00 - 0x03 Read-only */
> +	u8	vendor_id_low;
> +	u8	vendor_id_high;
> +	u8	product_id_low;
> +	u8	product_id_high;
> +	/* Function Control: 0x04 - 0x06 Read */
> +	u8	function_ctrl;		/* 0x04 Write */
> +	u8	function_ctrl_set;	/* 0x05 Set */
> +	u8	function_ctrl_clear;	/* 0x06 Clear */
> +	/* Interface Control: 0x07 - 0x09 Read */
> +	u8	iface_ctrl;		/* 0x07 Write */
> +	u8	iface_ctrl_set;		/* 0x08 Set */
> +	u8	iface_ctrl_clear;	/* 0x09 Clear */
> +	/* OTG Control: 0x0A - 0x0C Read */
> +	u8	otg_ctrl;		/* 0x0A Write */
> +	u8	otg_ctrl_set;		/* 0x0B Set */
> +	u8	otg_ctrl_clear;		/* 0x0C Clear */
> +	/* USB Interrupt Enable Rising: 0x0D - 0x0F Read */
> +	u8	usb_ie_rising;		/* 0x0D Write */
> +	u8	usb_ie_rising_set;	/* 0x0E Set */
> +	u8	usb_ie_rising_clear;	/* 0x0F Clear */
> +	/* USB Interrupt Enable Falling: 0x10 - 0x12 Read */
> +	u8	usb_ie_falling;		/* 0x10 Write */
> +	u8	usb_ie_falling_set;	/* 0x11 Set */
> +	u8	usb_ie_falling_clear;	/* 0x12 Clear */
> +	/* USB Interrupt Status: 0x13 Read-only */
> +	u8	usb_int_status;
> +	/* USB Interrupt Latch: 0x14 Read-only with auto-clear */
> +	u8	usb_int_latch;
> +	/* Debug: 0x15 Read-only */
> +	u8	debug;
> +	/* Scratch Register: 0x16 - 0x18 Read */
> +	u8	scratch;		/* 0x16 Write */
> +	u8	scratch_set;		/* 0x17 Set */
> +	u8	scratch_clear;		/* 0x18 Clear */
> +	/*
> +	 * Optional Carkit registers
> +	 */
> +	/* Carkit Control: 0x19 - 0x1B Read */
> +	u8	carkit_ctrl;		/* 0x19 Write */
> +	u8	carkit_ctrl_set;	/* 0x1A Set */
> +	u8	carkit_ctrl_clear;	/* 0x1B Clear */
> +	/* Carkit Interrupt Delay: 0x1C Read, Write */
> +	u8	carkit_int_delay;
> +	/* Carkit Interrupt Enable: 0x1D - 0x1F Read */
> +	u8	carkit_ie;		/* 0x1D Write */
> +	u8	carkit_ie_set;		/* 0x1E Set */
> +	u8	carkit_ie_clear;	/* 0x1F Clear */
> +	/* Carkit Interrupt Status: 0x20 Read-only */
> +	u8	carkit_int_status;
> +	/* Carkit Interrupt Latch: 0x21 Read-only with auto-clear */
> +	u8	carkit_int_latch;
> +	/* Carkit Pulse Control: 0x22 - 0x24 Read */
> +	u8	carkit_pulse_ctrl;		/* 0x22 Write */
> +	u8	carkit_pulse_ctrl_set;		/* 0x23 Set */
> +	u8	carkit_pulse_ctrl_clear;	/* 0x24 Clear */
> +	/*
> +	 * Other optional registers
> +	 */
> +	/* Transmit Positive Width: 0x25 Read, Write */
> +	u8	transmit_pos_width;
> +	/* Transmit Negative Width: 0x26 Read, Write */
> +	u8	transmit_neg_width;
> +	/* Receive Polarity Recovery: 0x27 Read, Write */
> +	u8	recv_pol_recovery;
> +	/*
> +	 * Addresses 0x28 - 0x2E are reserved, so we use offsets
> +	 * for immediate registers with higher addresses
> +	 */
> +};
> +
> +/* Access Extended Register Set (indicator) */
> +#define ACCESS_EXT_REGS_OFFSET	0x2f	/* read-write */
> +/* Vendor-specific */
> +#define VENDOR_SPEC_OFFSET	0x30
> +
> +/*
> + * Extended Register Set
> + *
> + * Addresses 0x00-0x3F map directly to Immediate Register Set.
> + * Addresses 0x40-0x7F are reserved.
> + * Addresses 0x80-0xff are vendor-specific.
> + */
> +#define EXT_VENDOR_SPEC_OFFSET	0x80
> +
> +/*
> + * Register Bits
> + */
> +
> +/* Function Control */
> +#define ULPI_FC_XCVRSEL			(1 << 0)
> +#define ULPI_FC_XCVRSEL_MASK		(3 << 0)
> +#define ULPI_FC_HIGH_SPEED		(0 << 0)
> +#define ULPI_FC_FULL_SPEED		(1 << 0)
> +#define ULPI_FC_LOW_SPEED		(2 << 0)
> +#define ULPI_FC_FS4LS			(3 << 0)
> +#define ULPI_FC_TERMSELECT		(1 << 2)
> +#define ULPI_FC_OPMODE			(1 << 3)
> +#define ULPI_FC_OPMODE_MASK		(3 << 3)
> +#define ULPI_FC_OPMODE_NORMAL		(0 << 3)
> +#define ULPI_FC_OPMODE_NONDRIVING	(1 << 3)
> +#define ULPI_FC_OPMODE_DISABLE_NRZI	(2 << 3)
> +#define ULPI_FC_OPMODE_NOSYNC_NOEOP	(3 << 3)
> +#define ULPI_FC_RESET			(1 << 5)
> +#define ULPI_FC_SUSPENDM		(1 << 6)
> +
> +/* Interface Control */
> +#define ULPI_IFACE_6_PIN_SERIAL_MODE	(1 << 0)
> +#define ULPI_IFACE_3_PIN_SERIAL_MODE	(1 << 1)
> +#define ULPI_IFACE_CARKITMODE		(1 << 2)
> +#define ULPI_IFACE_CLOCKSUSPENDM	(1 << 3)
> +#define ULPI_IFACE_AUTORESUME		(1 << 4)
> +#define ULPI_IFACE_EXTVBUS_COMPLEMENT	(1 << 5)
> +#define ULPI_IFACE_PASSTHRU		(1 << 6)
> +#define ULPI_IFACE_PROTECT_IFC_DISABLE	(1 << 7)
> +
> +/* OTG Control */
> +#define ULPI_OTG_ID_PULLUP		(1 << 0)
> +#define ULPI_OTG_DP_PULLDOWN		(1 << 1)
> +#define ULPI_OTG_DM_PULLDOWN		(1 << 2)
> +#define ULPI_OTG_DISCHRGVBUS		(1 << 3)
> +#define ULPI_OTG_CHRGVBUS		(1 << 4)
> +#define ULPI_OTG_DRVVBUS		(1 << 5)
> +#define ULPI_OTG_DRVVBUS_EXT		(1 << 6)
> +#define ULPI_OTG_EXTVBUSIND		(1 << 7)
> +
> +/*
> + * USB Interrupt Enable Rising,
> + * USB Interrupt Enable Falling,
> + * USB Interrupt Status and
> + * USB Interrupt Latch
> + */
> +#define ULPI_INT_HOST_DISCONNECT		(1 << 0)
> +#define ULPI_INT_VBUS_VALID			(1 << 1)
> +#define ULPI_INT_SESS_VALID			(1 << 2)
> +#define ULPI_INT_SESS_END			(1 << 3)
> +#define ULPI_INT_IDGRD				(1 << 4)
> +
> +/* Debug */
> +#define ULPI_DEBUG_LINESTATE0			(1 << 0)
> +#define ULPI_DEBUG_LINESTATE1			(1 << 1)
> +
> +/* Carkit Control */
> +#define ULPI_CARKIT_CTRL_CARKITPWR		(1 << 0)
> +#define ULPI_CARKIT_CTRL_IDGNDDRV		(1 << 1)
> +#define ULPI_CARKIT_CTRL_TXDEN			(1 << 2)
> +#define ULPI_CARKIT_CTRL_RXDEN			(1 << 3)
> +#define ULPI_CARKIT_CTRL_SPKLEFTEN		(1 << 4)
> +#define ULPI_CARKIT_CTRL_SPKRIGHTEN		(1 << 5)
> +#define ULPI_CARKIT_CTRL_MICEN			(1 << 6)
> +
> +/* Carkit Interrupt Enable */
> +#define ULPI_CARKIT_INT_EN_IDFLOAT_RISE		(1 << 0)
> +#define ULPI_CARKIT_INT_EN_IDFLOAT_FALL		(1 << 1)
> +#define ULPI_CARKIT_INT_EN_CARINTDET		(1 << 2)
> +#define ULPI_CARKIT_INT_EN_DP_RISE		(1 << 3)
> +#define ULPI_CARKIT_INT_EN_DP_FALL		(1 << 4)
> +
> +/*
> + * Carkit Interrupt Status and
> + * Carkit Interrupt Latch
> + */
> +#define ULPI_CARKIT_INT_IDFLOAT			(1 << 0)
> +#define ULPI_CARKIT_INT_CARINTDET		(1 << 1)
> +#define ULPI_CARKIT_INT_DP			(1 << 2)
> +
> +/* Carkit Pulse Control*/
> +#define ULPI_CARKIT_PLS_CTRL_TXPLSEN		(1 << 0)
> +#define ULPI_CARKIT_PLS_CTRL_RXPLSEN		(1 << 1)
> +#define ULPI_CARKIT_PLS_CTRL_SPKRLEFT_BIASEN	(1 << 2)
> +#define ULPI_CARKIT_PLS_CTRL_SPKRRIGHT_BIASEN	(1 << 3)
> +
> +/*
> + * This is the generic ULPI interface.
> + * All functions with the exception of ulpi_read() return 0 in the case
> + * of success, ULPI_ERROR otherwise.
> + * 'ulpi_viewport' have to be address of ULPI Viewport register.
> + */
> +/*
> + * This function should be called before every other function
> + * to check the ULPI registers.
> + */
> +int ulpi_init(u32 ulpi_viewport);
> +
> +/*
> + * These are wrappers for functionalities, which could be enabled
> + * via ULPI registers.
> + */
> +int ulpi_select_transceiver(u32 ulpi_viewport, int speed);
> +int ulpi_drive_vbus(u32 ulpi_viewport,
> +	int ext_power_supply, int use_ext_indicator);
> +int ulpi_pulldown(u32 ulpi_viewport, int enable);
> +int ulpi_select_opmode(u32 ulpi_viewport, int style);
> +int ulpi_suspend(u32 ulpi_viewport);
> +int ulpi_resume(u32 ulpi_viewport);
> +int ulpi_reset(u32 ulpi_viewport);
> +
> +/*
> + * These are functions for direct reading from and writing to
> + * ULPI registers.
> + */
> +u32 ulpi_write(u32 ulpi_viewport, u8 *reg, u32 value);
> +u32 ulpi_read(u32 ulpi_viewport, u8 *reg);
> +#endif /* __USB_ULPI_H */

-- 
Regards,
Igor.