| /* 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__ */ |
