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/* SPDX-License-Identifier: GPL-2.0 */
/*
* ddbridge-io.h: Digital Devices bridge I/O inline functions
*
* Copyright (C) 2010-2017 Digital Devices GmbH
* Ralph Metzler <rjkm@metzlerbros.de>
* Marcus Metzler <mocm@metzlerbros.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 only, 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 __DDBRIDGE_IO_H__
#define __DDBRIDGE_IO_H__
#include <linux/io.h>
#include "ddbridge.h"
/******************************************************************************/
static inline u32 ddblreadl(struct ddb_link *link, u32 adr)
{
return readl(link->dev->regs + adr);
}
static inline void ddblwritel(struct ddb_link *link, u32 val, u32 adr)
{
writel(val, link->dev->regs + adr);
}
static inline u32 ddbreadl(struct ddb *dev, u32 adr)
{
return readl(dev->regs + adr);
}
static inline void ddbwritel(struct ddb *dev, u32 val, u32 adr)
{
writel(val, dev->regs + adr);
}
static inline void ddbcpyto(struct ddb *dev, u32 adr, void *src, long count)
{
memcpy_toio(dev->regs + adr, src, count);
}
static inline void ddbcpyfrom(struct ddb *dev, void *dst, u32 adr, long count)
{
memcpy_fromio(dst, dev->regs + adr, count);
}
static inline u32 safe_ddbreadl(struct ddb *dev, u32 adr)
{
u32 val = ddbreadl(dev, adr);
/* (ddb)readl returns (uint)-1 (all bits set) on failure, catch that */
if (val == ~0) {
dev_err(&dev->pdev->dev, "ddbreadl failure, adr=%08x\n", adr);
return 0;
}
return val;
}
#endif /* __DDBRIDGE_IO_H__ */
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