From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/usb/dwc3/io.h | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 drivers/usb/dwc3/io.h (limited to 'drivers/usb/dwc3/io.h') diff --git a/drivers/usb/dwc3/io.h b/drivers/usb/dwc3/io.h new file mode 100644 index 000000000..6a79c8e66 --- /dev/null +++ b/drivers/usb/dwc3/io.h @@ -0,0 +1,70 @@ +/** + * io.h - DesignWare USB3 DRD IO Header + * + * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com + * + * Authors: Felipe Balbi , + * Sebastian Andrzej Siewior + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License 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. + */ + +#ifndef __DRIVERS_USB_DWC3_IO_H +#define __DRIVERS_USB_DWC3_IO_H + +#include +#include "trace.h" +#include "debug.h" +#include "core.h" + +static inline u32 dwc3_readl(void __iomem *base, u32 offset) +{ + u32 offs = offset - DWC3_GLOBALS_REGS_START; + u32 value; + + /* + * We requested the mem region starting from the Globals address + * space, see dwc3_probe in core.c. + * However, the offsets are given starting from xHCI address space. + */ + value = readl(base + offs); + + /* + * When tracing we want to make it easy to find the correct address on + * documentation, so we revert it back to the proper addresses, the + * same way they are described on SNPS documentation + */ + dwc3_trace(trace_dwc3_readl, "addr %p value %08x", + base - DWC3_GLOBALS_REGS_START + offset, value); + + return value; +} + +static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value) +{ + u32 offs = offset - DWC3_GLOBALS_REGS_START; + + /* + * We requested the mem region starting from the Globals address + * space, see dwc3_probe in core.c. + * However, the offsets are given starting from xHCI address space. + */ + writel(value, base + offs); + + /* + * When tracing we want to make it easy to find the correct address on + * documentation, so we revert it back to the proper addresses, the + * same way they are described on SNPS documentation + */ + dwc3_trace(trace_dwc3_writel, "addr %p value %08x", + base - DWC3_GLOBALS_REGS_START + offset, value); +} + +#endif /* __DRIVERS_USB_DWC3_IO_H */ -- cgit v1.2.3-54-g00ecf