LXR uboot/drivers/usb/musb-new/musb

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * MUSB OTG driver register I/O
   4 *
   5 * Copyright 2005 Mentor Graphics Corporation
   6 * Copyright (C) 2005-2006 by Texas Instruments
   7 * Copyright (C) 2006-2007 Nokia Corporation
   8 *
   9 * This program is free software; you can redistribute it and/or
  10 * modify it under the terms of the GNU General Public License
  11 * version 2 as published by the Free Software Foundation.
  12 */
  13
  14#ifndef __MUSB_LINUX_PLATFORM_ARCH_H__
  15#define __MUSB_LINUX_PLATFORM_ARCH_H__
  16
  17#ifndef __UBOOT__
  18#include <linux/io.h>
  19#else
  20#include <asm/io.h>
  21#endif
  22
  23#if !defined(CONFIG_ARM) && !defined(CONFIG_SUPERH) \
  24        && !defined(CONFIG_PPC32) \
  25        && !defined(CONFIG_PPC64) && !defined(CONFIG_MIPS) \
  26        && !defined(CONFIG_M68K)
  27static inline void readsl(const void __iomem *addr, void *buf, int len)
  28        { insl((unsigned long)addr, buf, len); }
  29static inline void readsw(const void __iomem *addr, void *buf, int len)
  30        { insw((unsigned long)addr, buf, len); }
  31static inline void readsb(const void __iomem *addr, void *buf, int len)
  32        { insb((unsigned long)addr, buf, len); }
  33
  34static inline void writesl(const void __iomem *addr, const void *buf, int len)
  35        { outsl((unsigned long)addr, buf, len); }
  36static inline void writesw(const void __iomem *addr, const void *buf, int len)
  37        { outsw((unsigned long)addr, buf, len); }
  38static inline void writesb(const void __iomem *addr, const void *buf, int len)
  39        { outsb((unsigned long)addr, buf, len); }
  40
  41#endif
  42
  43/* NOTE:  these offsets are all in bytes */
  44
  45static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
  46        { return __raw_readw(addr + offset); }
  47
  48static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
  49        { return __raw_readl(addr + offset); }
  50
  51
  52static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
  53        { __raw_writew(data, addr + offset); }
  54
  55static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
  56        { __raw_writel(data, addr + offset); }
  57
  58
  59#if defined(CONFIG_USB_MUSB_TUSB6010) || defined (CONFIG_USB_MUSB_TUSB6010_MODULE)
  60
  61/*
  62 * TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum.
  63 */
  64static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
  65{
  66        u16 tmp;
  67        u8 val;
  68
  69        tmp = __raw_readw(addr + (offset & ~1));
  70        if (offset & 1)
  71                val = (tmp >> 8);
  72        else
  73                val = tmp & 0xff;
  74
  75        return val;
  76}
  77
  78static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
  79{
  80        u16 tmp;
  81
  82        tmp = __raw_readw(addr + (offset & ~1));
  83        if (offset & 1)
  84                tmp = (data << 8) | (tmp & 0xff);
  85        else
  86                tmp = (tmp & 0xff00) | data;
  87
  88        __raw_writew(tmp, addr + (offset & ~1));
  89}
  90
  91#else
  92
  93static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
  94        { return __raw_readb(addr + offset); }
  95
  96static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
  97        { __raw_writeb(data, addr + offset); }
  98
  99#endif  /* CONFIG_USB_MUSB_TUSB6010 */
 100
 101#endif
 102