| /* |
| * Originally imported from linux/include/asm-arm/io.h. This file has changed |
| * substantially since then. |
| * |
| * Copyright 2013 Google Inc. |
| * Copyright (C) 1996-2000 Russell King |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * Modifications: |
| * 08-Apr-2013 G Replaced several macros with inlines for type safety. |
| * 16-Sep-1996 RMK Inlined the inx/outx functions & optimised for both |
| * constant addresses and variable addresses. |
| * 04-Dec-1997 RMK Moved a lot of this stuff to the new architecture |
| * specific IO header files. |
| * 27-Mar-1999 PJB Second parameter of memcpy_toio is const.. |
| * 04-Apr-1999 PJB Added check_signature. |
| * 12-Dec-1999 RMK More cleanups |
| * 18-Jun-2000 RMK Removed virt_to_* and friends definitions |
| */ |
| #ifndef __ASM_ARM_ARCH_IO_H |
| #define __ASM_ARM_ARCH_IO_H |
| |
| #include <stdint.h> |
| |
| static inline uint8_t read8(const void *addr) |
| { |
| return *(volatile uint8_t *)addr; |
| } |
| |
| static inline uint16_t read16(const void *addr) |
| { |
| return *(volatile uint16_t *)addr; |
| } |
| |
| static inline uint32_t read32(const void *addr) |
| { |
| return *(volatile uint32_t *)addr; |
| } |
| |
| static inline void write8(uint8_t val, void *addr) |
| { |
| *(volatile uint8_t *)addr = val; |
| } |
| |
| static inline void write16(uint16_t val, void *addr) |
| { |
| *(volatile uint16_t *)addr = val; |
| } |
| |
| static inline void write32(uint32_t val, void *addr) |
| { |
| *(volatile uint32_t *)addr = val; |
| } |
| |
| #endif /* __ASM_ARM_ARCH_IO_H */ |
