drivers/usb/musb-new/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  * SPDX-License-Identifier:     GPL-2.0
  13  */
  14
  15 #ifndef __MUSB_LINUX_PLATFORM_ARCH_H__
  16 #define __MUSB_LINUX_PLATFORM_ARCH_H__
  17
  18 #ifndef __UBOOT__
  19 #include <linux/io.h>
  20 #else
  21 #include <asm/io.h>
  22 #endif
  23
  24 #if !defined(CONFIG_ARM) && !defined(CONFIG_SUPERH) \
  25         && !defined(CONFIG_AVR32) && !defined(CONFIG_PPC32) \
  26         && !defined(CONFIG_PPC64) && !defined(CONFIG_MIPS) \
  27         && !defined(CONFIG_M68K)
  28 static inline void readsl(const void __iomem *addr, void *buf, int len)
  29         { insl((unsigned long)addr, buf, len); }
  30 static inline void readsw(const void __iomem *addr, void *buf, int len)
  31         { insw((unsigned long)addr, buf, len); }
  32 static inline void readsb(const void __iomem *addr, void *buf, int len)
  33         { insb((unsigned long)addr, buf, len); }
  34
  35 static inline void writesl(const void __iomem *addr, const void *buf, int len)
  36         { outsl((unsigned long)addr, buf, len); }
  37 static inline void writesw(const void __iomem *addr, const void *buf, int len)
  38         { outsw((unsigned long)addr, buf, len); }
  39 static inline void writesb(const void __iomem *addr, const void *buf, int len)
  40         { outsb((unsigned long)addr, buf, len); }
  41
  42 #endif
  43
  44 /* NOTE:  these offsets are all in bytes */
  45
  46 static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
  47         { return __raw_readw(addr + offset); }
  48
  49 static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
  50         { return __raw_readl(addr + offset); }
  51
  52
  53 static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
  54         { __raw_writew(data, addr + offset); }
  55
  56 static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
  57         { __raw_writel(data, addr + offset); }
  58
  59
  60 #if defined(CONFIG_USB_MUSB_TUSB6010) || defined (CONFIG_USB_MUSB_TUSB6010_MODULE)
  61
  62 /*
  63  * TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum.
  64  */
  65 static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
  66 {
  67         u16 tmp;
  68         u8 val;
  69
  70         tmp = __raw_readw(addr + (offset & ~1));
  71         if (offset & 1)
  72                 val = (tmp >> 8);
  73         else
  74                 val = tmp & 0xff;
  75
  76         return val;
  77 }
  78
  79 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
  80 {
  81         u16 tmp;
  82
  83         tmp = __raw_readw(addr + (offset & ~1));
  84         if (offset & 1)
  85                 tmp = (data << 8) | (tmp & 0xff);
  86         else
  87                 tmp = (tmp & 0xff00) | data;
  88
  89         __raw_writew(tmp, addr + (offset & ~1));
  90 }
  91
  92 #else
  93
  94 static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
  95         { return __raw_readb(addr + offset); }
  96
  97 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
  98         { __raw_writeb(data, addr + offset); }
  99
 100 #endif  /* CONFIG_USB_MUSB_TUSB6010 */
 101
 102 #endif