blob: 19b12f36a5c8b08e757abc67987a246448045b90 [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0 */
/*
* MUSB OTG driver register I/O
*
* Copyright 2005 Mentor Graphics Corporation
* Copyright (C) 2005-2006 by Texas Instruments
* Copyright (C) 2006-2007 Nokia Corporation
*
* 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.
*/
#ifndef __MUSB_LINUX_PLATFORM_ARCH_H__
#define __MUSB_LINUX_PLATFORM_ARCH_H__
#include <linux/io.h>
/* NOTE: these offsets are all in bytes */
static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
{ return __raw_readw(addr + offset); }
static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
{ return __raw_readl(addr + offset); }
static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
{ __raw_writew(data, addr + offset); }
static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
{ __raw_writel(data, addr + offset); }
#if defined(CONFIG_USB_MUSB_TUSB6010) || defined (CONFIG_USB_MUSB_TUSB6010_MODULE)
/*
* 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(addr + offset); }
static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
{ __raw_writeb(data, addr + offset); }
#endif /* CONFIG_USB_MUSB_TUSB6010 */
#endif