LXR linux/drivers/usb/dwc3/io.h

   1/**
   2 * io.h - DesignWare USB3 DRD IO Header
   3 *
   4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
   5 *
   6 * Authors: Felipe Balbi <balbi@ti.com>,
   7 *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
   8 *
   9 * Redistribution and use in source and binary forms, with or without
  10 * modification, are permitted provided that the following conditions
  11 * are met:
  12 * 1. Redistributions of source code must retain the above copyright
  13 *    notice, this list of conditions, and the following disclaimer,
  14 *    without modification.
  15 * 2. Redistributions in binary form must reproduce the above copyright
  16 *    notice, this list of conditions and the following disclaimer in the
  17 *    documentation and/or other materials provided with the distribution.
  18 * 3. The names of the above-listed copyright holders may not be used
  19 *    to endorse or promote products derived from this software without
  20 *    specific prior written permission.
  21 *
  22 * ALTERNATIVELY, this software may be distributed under the terms of the
  23 * GNU General Public License ("GPL") version 2, as published by the Free
  24 * Software Foundation.
  25 *
  26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  27 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  28 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  30 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  31 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  32 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  33 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  34 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  35 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  36 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37 */
  38
  39#ifndef __DRIVERS_USB_DWC3_IO_H
  40#define __DRIVERS_USB_DWC3_IO_H
  41
  42#include <linux/io.h>
  43
  44#include "core.h"
  45
  46static inline u32 dwc3_readl(void __iomem *base, u32 offset)
  47{
  48        /*
  49         * We requested the mem region starting from the Globals address
  50         * space, see dwc3_probe in core.c.
  51         * However, the offsets are given starting from xHCI address space.
  52         */
  53        return readl(base + (offset - DWC3_GLOBALS_REGS_START));
  54}
  55
  56static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value)
  57{
  58        /*
  59         * We requested the mem region starting from the Globals address
  60         * space, see dwc3_probe in core.c.
  61         * However, the offsets are given starting from xHCI address space.
  62         */
  63        writel(value, base + (offset - DWC3_GLOBALS_REGS_START));
  64}
  65
  66#endif /* __DRIVERS_USB_DWC3_IO_H */
  67