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author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2019-02-19 23:29:27 -0800 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-02-22 08:27:55 +0100 |
commit | de90d053e79146361f99eb6f7d2aba555c37e902 (patch) | |
tree | 46121c768341bc9ccd63679e9e0368edd3ee1115 /drivers/usb/dwc3/io.h | |
parent | 7817ca90abcc7807152cb4339065cfd8db565d68 (diff) | |
download | barebox-de90d053e79146361f99eb6f7d2aba555c37e902.tar.gz barebox-de90d053e79146361f99eb6f7d2aba555c37e902.tar.xz |
usb: Import DWC3 USB controller driver from Linux
Import DWC3 USB controller driver from Linux. This is a bare minimum
port of the code needed to support USB host functionality on
i.MX8MQ. No other use-case is explicitly supported.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/usb/dwc3/io.h')
-rw-r--r-- | drivers/usb/dwc3/io.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/io.h b/drivers/usb/dwc3/io.h new file mode 100644 index 0000000000..f87b173e90 --- /dev/null +++ b/drivers/usb/dwc3/io.h @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0 +/** + * io.h - DesignWare USB3 DRD IO Header + * + * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com + * + * Authors: Felipe Balbi <balbi@ti.com>, + * Sebastian Andrzej Siewior <bigeasy@linutronix.de> + */ + +#ifndef __DRIVERS_USB_DWC3_IO_H +#define __DRIVERS_USB_DWC3_IO_H + +#include <io.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. + */ + value = readl(base + offset - DWC3_GLOBALS_REGS_START); + + return value; +} + +static inline void dwc3_writel(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. + */ + writel(value, base + offset - DWC3_GLOBALS_REGS_START); +} + +#endif /* __DRIVERS_USB_DWC3_IO_H */ |