1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2021-2022 Digiteq Automotive 4 * author: Martin Tuma <martin.tuma@digiteqautomotive.com> 5 */ 6 7 #ifndef __MGB4_REGS_H__ 8 #define __MGB4_REGS_H__ 9 10 #include <linux/io.h> 11 12 struct mgb4_regs { 13 resource_size_t mapbase; 14 resource_size_t mapsize; 15 void __iomem *membase; 16 }; 17 18 #define mgb4_write_reg(regs, offset, val) \ 19 iowrite32(val, (regs)->membase + (offset)) 20 #define mgb4_read_reg(regs, offset) \ 21 ioread32((regs)->membase + (offset)) 22 23 static inline void mgb4_mask_reg(struct mgb4_regs *regs, u32 reg, u32 mask, 24 u32 val) 25 { 26 u32 ret = mgb4_read_reg(regs, reg); 27 28 val |= ret & ~mask; 29 mgb4_write_reg(regs, reg, val); 30 } 31 32 int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs); 33 void mgb4_regs_free(struct mgb4_regs *regs); 34 35 #endif 36