drivers/usb/musb/musb_io.h

   1 /*
   2  * MUSB OTG driver register I/O
   3  *
   4  * Copyright 2005 Mentor Graphics Corporation
   5  * Copyright (C) 2005-2006 by Texas Instruments
   6  * Copyright (C) 2006-2007 Nokia Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
  23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  25  * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  28  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  29  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  */
  34
  35 #ifndef __MUSB_LINUX_PLATFORM_ARCH_H__
  36 #define __MUSB_LINUX_PLATFORM_ARCH_H__
  37
  38 #include <linux/io.h>
  39
  40 #if !defined(CONFIG_ARM) && !defined(CONFIG_SUPERH) \
  41         && !defined(CONFIG_AVR32) && !defined(CONFIG_PPC32) \
  42         && !defined(CONFIG_PPC64) && !defined(CONFIG_BLACKFIN) \
  43         && !defined(CONFIG_MIPS) && !defined(CONFIG_M68K)
  44 static inline void readsl(const void __iomem *addr, void *buf, int len)
  45         { insl((unsigned long)addr, buf, len); }
  46 static inline void readsw(const void __iomem *addr, void *buf, int len)
  47         { insw((unsigned long)addr, buf, len); }
  48 static inline void readsb(const void __iomem *addr, void *buf, int len)
  49         { insb((unsigned long)addr, buf, len); }
  50
  51 static inline void writesl(const void __iomem *addr, const void *buf, int len)
  52         { outsl((unsigned long)addr, buf, len); }
  53 static inline void writesw(const void __iomem *addr, const void *buf, int len)
  54         { outsw((unsigned long)addr, buf, len); }
  55 static inline void writesb(const void __iomem *addr, const void *buf, int len)
  56         { outsb((unsigned long)addr, buf, len); }
  57
  58 #endif
  59
  60 #ifndef CONFIG_BLACKFIN
  61
  62 /* NOTE:  these offsets are all in bytes */
  63
  64 static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
  65         { return __raw_readw(addr + offset); }
  66
  67 static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
  68         { return __raw_readl(addr + offset); }
  69
  70
  71 static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
  72         { __raw_writew(data, addr + offset); }
  73
  74 static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
  75         { __raw_writel(data, addr + offset); }
  76
  77
  78 #if defined(CONFIG_USB_MUSB_TUSB6010) || defined (CONFIG_USB_MUSB_TUSB6010_MODULE)
  79
  80 /*
  81  * TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum.
  82  */
  83 static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
  84 {
  85         u16 tmp;
  86         u8 val;
  87
  88         tmp = __raw_readw(addr + (offset & ~1));
  89         if (offset & 1)
  90                 val = (tmp >> 8);
  91         else
  92                 val = tmp & 0xff;
  93
  94         return val;
  95 }
  96
  97 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
  98 {
  99         u16 tmp;
 100
 101         tmp = __raw_readw(addr + (offset & ~1));
 102         if (offset & 1)
 103                 tmp = (data << 8) | (tmp & 0xff);
 104         else
 105                 tmp = (tmp & 0xff00) | data;
 106
 107         __raw_writew(tmp, addr + (offset & ~1));
 108 }
 109
 110 #else
 111
 112 static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
 113         { return __raw_readb(addr + offset); }
 114
 115 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
 116         { __raw_writeb(data, addr + offset); }
 117
 118 #endif  /* CONFIG_USB_MUSB_TUSB6010 */
 119
 120 #else
 121
 122 static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
 123         { return (u8) (bfin_read16(addr + offset)); }
 124
 125 static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
 126         { return bfin_read16(addr + offset); }
 127
 128 static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
 129         { return (u32) (bfin_read16(addr + offset)); }
 130
 131 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
 132         { bfin_write16(addr + offset, (u16) data); }
 133
 134 static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
 135         { bfin_write16(addr + offset, data); }
 136
 137 static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
 138         { bfin_write16(addr + offset, (u16) data); }
 139
 140 #endif /* CONFIG_BLACKFIN */
 141
 142 #endif