1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * ddbridge-io.h: Digital Devices bridge I/O inline functions 4 * 5 * Copyright (C) 2010-2017 Digital Devices GmbH 6 * 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