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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * ddbridge-io.h: Digital Devices bridge I/O inline functions4 *5 * Copyright (C) 2010-2017 Digital Devices GmbH6 * Ralph Metzler <rjkm@metzlerbros.de>7 * Marcus Metzler <mocm@metzlerbros.de>8 */9 10#ifndef __DDBRIDGE_IO_H__11#define __DDBRIDGE_IO_H__12 13#include <linux/io.h>14 15#include "ddbridge.h"16 17/******************************************************************************/18 19static inline u32 ddblreadl(struct ddb_link *link, u32 adr)20{21 return readl(link->dev->regs + adr);22}23 24static inline void ddblwritel(struct ddb_link *link, u32 val, u32 adr)25{26 writel(val, link->dev->regs + adr);27}28 29static inline u32 ddbreadl(struct ddb *dev, u32 adr)30{31 return readl(dev->regs + adr);32}33 34static inline void ddbwritel(struct ddb *dev, u32 val, u32 adr)35{36 writel(val, dev->regs + adr);37}38 39static inline void ddbcpyto(struct ddb *dev, u32 adr, void *src, long count)40{41 memcpy_toio(dev->regs + adr, src, count);42}43 44static inline void ddbcpyfrom(struct ddb *dev, void *dst, u32 adr, long count)45{46 memcpy_fromio(dst, dev->regs + adr, count);47}48 49static inline u32 safe_ddbreadl(struct ddb *dev, u32 adr)50{51 u32 val = ddbreadl(dev, adr);52 53 /* (ddb)readl returns (uint)-1 (all bits set) on failure, catch that */54 if (val == ~0) {55 dev_err(&dev->pdev->dev, "ddbreadl failure, adr=%08x\n", adr);56 return 0;57 }58 59 return val;60}61 62#endif /* __DDBRIDGE_IO_H__ */63