diff options
Diffstat (limited to 'drivers/usb/dwc3/io.h')
| -rw-r--r-- | drivers/usb/dwc3/io.h | 59 |
1 files changed, 25 insertions, 34 deletions
diff --git a/drivers/usb/dwc3/io.h b/drivers/usb/dwc3/io.h index a50f76b9d19b..1e96ea339d48 100644 --- a/drivers/usb/dwc3/io.h +++ b/drivers/usb/dwc3/io.h @@ -1,56 +1,40 @@ -/** +/* SPDX-License-Identifier: GPL-2.0 */ +/* * io.h - DesignWare USB3 DRD IO Header * - * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com + * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com * * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. - * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef __DRIVERS_USB_DWC3_IO_H #define __DRIVERS_USB_DWC3_IO_H #include <linux/io.h> - +#include "trace.h" +#include "debug.h" #include "core.h" static inline u32 dwc3_readl(void __iomem *base, u32 offset) { + 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. */ - return readl(base + (offset - DWC3_GLOBALS_REGS_START)); + value = readl(base + offset - DWC3_GLOBALS_REGS_START); + + /* + * 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 + */ + trace_dwc3_readl(base - DWC3_GLOBALS_REGS_START, offset, value); + + return value; } static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value) @@ -60,7 +44,14 @@ static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value) * space, see dwc3_probe in core.c. * However, the offsets are given starting from xHCI address space. */ - writel(value, base + (offset - DWC3_GLOBALS_REGS_START)); + writel(value, base + offset - DWC3_GLOBALS_REGS_START); + + /* + * 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 + */ + trace_dwc3_writel(base - DWC3_GLOBALS_REGS_START, offset, value); } #endif /* __DRIVERS_USB_DWC3_IO_H */ |