/******************************************************************
 * Copyright 2005 Mentor Graphics Corporation
 * Copyright (C) 2005-2006 by Texas Instruments
 *
 * This file is part of the Inventra Controller Driver for Linux.
 *
 * The Inventra Controller Driver for Linux 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.
 *
 * The Inventra Controller Driver for Linux 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 The Inventra Controller Driver for Linux ; if not,
 * write to the Free Software Foundation, Inc., 59 Temple Place,
 * Suite 330, Boston, MA  02111-1307  USA
 *
 * ANY DOWNLOAD, USE, REPRODUCTION, MODIFICATION OR DISTRIBUTION
 * OF THIS DRIVER INDICATES YOUR COMPLETE AND UNCONDITIONAL ACCEPTANCE
 * OF THOSE TERMS.THIS DRIVER IS PROVIDED "AS IS" AND MENTOR GRAPHICS
 * MAKES NO WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THIS DRIVER.
 * MENTOR GRAPHICS SPECIFICALLY DISCLAIMS ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY; FITNESS FOR A PARTICULAR PURPOSE AND
 * NON-INFRINGEMENT.  MENTOR GRAPHICS DOES NOT PROVIDE SUPPORT
 * SERVICES OR UPDATES FOR THIS DRIVER, EVEN IF YOU ARE A MENTOR
 * GRAPHICS SUPPORT CUSTOMER.
 ******************************************************************/

/*
 * Linux-specific architecture definitions
 */

#ifndef __MUSB_LINUX_PLATFORM_ARCH_H__
#define __MUSB_LINUX_PLATFORM_ARCH_H__

#include <asm/io.h>

/* NOTE:  these offsets are all in bytes */

static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
	{ return __raw_readw((void *__iomem)(addr + offset)); }

static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
	{ return __raw_readl((void *__iomem)(addr + offset)); }


static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
	{ __raw_writew(data, (void *__iomem)(addr + offset)); }

static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
	{ __raw_writel(data, (void *__iomem)(addr + offset)); }


#ifdef CONFIG_USB_TUSB_6010

/*
 * TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum.
 */
static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
{
	u16 tmp;
	u8 val;

	tmp = __raw_readw(addr + (offset & ~1));
	if (offset & 1)
		val = (tmp >> 8);
	else
		val = tmp & 0xff;

	return val;
}

static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
{
	u16 tmp;

	tmp = __raw_readw(addr + (offset & ~1));
	if (offset & 1)
		tmp = (data << 8) | (tmp & 0xff);
	else
		tmp = (tmp & 0xff00) | data;

	__raw_writew(tmp, addr + (offset & ~1));
}

#else

static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
	{ return __raw_readb((void *__iomem)(addr + offset)); }

static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
	{ __raw_writeb(data, addr + offset); }

#endif	/* CONFIG_USB_TUSB_6010 */

#endif