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/*
* 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.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHORS 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.
*
*/
#ifndef __MUSBFSH_LINUX_PLATFORM_ARCH_H__
#define __MUSBFSH_LINUX_PLATFORM_ARCH_H__
#include <linux/io.h>
#include <linux/spinlock.h>
extern spinlock_t musbfs_io_lock;
extern void mt65xx_usb11_clock_enable(bool enable);
extern bool musbfsh_power;
/* NOTE: these offsets are all in bytes */
static inline u16 musbfsh_readw(const void __iomem *addr, unsigned offset)
{
u16 rc = 0;
if(musbfsh_power)
rc = readw(addr + offset);
else
{
unsigned long flags = 0;
spin_lock_irqsave(&musbfs_io_lock, flags);
mt65xx_usb11_clock_enable(true);
//DBG(0,"[MUSB]:access %s function when usb clock is off 0x%X\n",__func__, offset);
rc = readw(addr + offset);
mt65xx_usb11_clock_enable(false);
spin_unlock_irqrestore(&musbfs_io_lock, flags);
}
return rc;
}
static inline u32 musbfsh_readl(const void __iomem *addr, unsigned offset)
{
u32 rc = 0;
if(musbfsh_power)
rc = readl(addr + offset);
else
{
unsigned long flags = 0;
spin_lock_irqsave(&musbfs_io_lock, flags);
mt65xx_usb11_clock_enable(true);
//DBG(0,"[MUSB]:access %s function when usb clock is off 0x%X\n",__func__, offset);
rc = readl(addr + offset);
mt65xx_usb11_clock_enable(false);
spin_unlock_irqrestore(&musbfs_io_lock, flags);
}
return rc;
}
static inline void musbfsh_writew(void __iomem *addr, unsigned offset, u16 data)
{
if(musbfsh_power)
writew(data, addr + offset);
else
{
unsigned long flags = 0;
spin_lock_irqsave(&musbfs_io_lock, flags);
mt65xx_usb11_clock_enable(true);
//DBG(0,"[MUSB]:access %s function when usb clock is off 0x%X\n",__func__, offset);
writew(data, addr + offset);
mt65xx_usb11_clock_enable(false);
spin_unlock_irqrestore(&musbfs_io_lock, flags);
}
}
static inline void musbfsh_writel(void __iomem *addr, unsigned offset, u32 data)
{
if(musbfsh_power)
writel(data, addr + offset);
else
{
unsigned long flags = 0;
spin_lock_irqsave(&musbfs_io_lock, flags);
mt65xx_usb11_clock_enable(true);
//DBG(0,"[MUSBfsh]:access %s function when usb clock is off 0x%X\n",__func__, offset);
writel(data, addr + offset);
mt65xx_usb11_clock_enable(false);
spin_unlock_irqrestore(&musbfs_io_lock, flags);
}
}
static inline u8 musbfsh_readb(const void __iomem *addr, unsigned offset)
{
u8 rc = 0;
if(musbfsh_power)
rc = readb(addr + offset);
else
{
unsigned long flags = 0;
spin_lock_irqsave(&musbfs_io_lock, flags);
mt65xx_usb11_clock_enable(true);
//DBG(0,"[MUSBfsh]:access %s function when usb clock is off 0x%X\n",__func__, offset);
rc = readb(addr + offset);
mt65xx_usb11_clock_enable(false);
spin_unlock_irqrestore(&musbfs_io_lock, flags);
}
return rc;
}
static inline void musbfsh_writeb(void __iomem *addr, unsigned offset, u8 data)
{
if(musbfsh_power)
writeb(data, addr + offset);
else
{
unsigned long flags = 0;
spin_lock_irqsave(&musbfs_io_lock, flags);
mt65xx_usb11_clock_enable(true);
//DBG(0,"[MUSBfsh]:access %s function when usb clock is off 0x%X\n",__func__, offset);
writeb(data, addr + offset);
mt65xx_usb11_clock_enable(false);
spin_unlock_irqrestore(&musbfs_io_lock, flags);
}
}
/* NOTE: these offsets are all in bytes */
#if 0
static inline u16 musbfsh_readw(const void __iomem *addr, unsigned offset)
{ return readw(addr + offset); }
static inline u32 musbfsh_readl(const void __iomem *addr, unsigned offset)
{ return readl(addr + offset); }
static inline void musbfsh_writew(void __iomem *addr, unsigned offset, u16 data)
{ writew(data, addr + offset); }
static inline void musbfsh_writel(void __iomem *addr, unsigned offset, u32 data)
{ writel(data, addr + offset); }
static inline u8 musbfsh_readb(const void __iomem *addr, unsigned offset)
{ return readb(addr + offset); }
static inline void musbfsh_writeb(void __iomem *addr, unsigned offset, u8 data)
{ writeb(data, addr + offset); }
#endif
#endif
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