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 
mgb4_mask_reg(struct mgb4_regs * regs,u32 reg,u32 mask,u32 val)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