72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
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/*
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* ddbridge-io.h: Digital Devices bridge I/O inline functions
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*
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* Copyright (C) 2010-2017 Digital Devices GmbH
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* Ralph Metzler <rjkm@metzlerbros.de>
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* Marcus Metzler <mocm@metzlerbros.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 only, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __DDBRIDGE_IO_H__
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#define __DDBRIDGE_IO_H__
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#include <linux/io.h>
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#include "ddbridge.h"
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/******************************************************************************/
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static inline u32 ddblreadl(struct ddb_link *link, u32 adr)
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{
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return readl(link->dev->regs + adr);
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}
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static inline void ddblwritel(struct ddb_link *link, u32 val, u32 adr)
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{
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writel(val, link->dev->regs + adr);
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}
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static inline u32 ddbreadl(struct ddb *dev, u32 adr)
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{
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return readl(dev->regs + adr);
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}
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static inline void ddbwritel(struct ddb *dev, u32 val, u32 adr)
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{
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writel(val, dev->regs + adr);
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}
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static inline void ddbcpyto(struct ddb *dev, u32 adr, void *src, long count)
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{
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memcpy_toio(dev->regs + adr, src, count);
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}
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static inline void ddbcpyfrom(struct ddb *dev, void *dst, u32 adr, long count)
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{
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memcpy_fromio(dst, dev->regs + adr, count);
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}
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static inline u32 safe_ddbreadl(struct ddb *dev, u32 adr)
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{
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u32 val = ddbreadl(dev, adr);
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/* (ddb)readl returns (uint)-1 (all bits set) on failure, catch that */
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if (val == ~0) {
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dev_err(&dev->pdev->dev, "ddbreadl failure, adr=%08x\n", adr);
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return 0;
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}
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return val;
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}
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#endif /* __DDBRIDGE_IO_H__ */
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