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/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2023 Ventana Micro Systems Inc.
*
* Authors:
* Anup Patel <apatel@ventanamicro.com>
*/
#ifndef __REGMAP_H__
#define __REGMAP_H__
#include <sbi/sbi_types.h>
#include <sbi/sbi_list.h>
/** Representation of a regmap instance */
struct regmap {
/** Uniquie ID of the regmap instance assigned by the driver */
unsigned int id;
/** Configuration of regmap registers */
int reg_shift;
int reg_stride;
unsigned int reg_base;
unsigned int reg_max;
/** Read a regmap register */
int (*reg_read)(struct regmap *rmap, unsigned int reg,
unsigned int *val);
/** Write a regmap register */
int (*reg_write)(struct regmap *rmap, unsigned int reg,
unsigned int val);
/** Read-modify-write a regmap register */
int (*reg_update_bits)(struct regmap *rmap, unsigned int reg,
unsigned int mask, unsigned int val);
/** List */
struct sbi_dlist node;
};
static inline struct regmap *to_regmap(struct sbi_dlist *node)
{
return container_of(node, struct regmap, node);
}
/** Find a registered regmap instance */
struct regmap *regmap_find(unsigned int id);
/** Register a regmap instance */
int regmap_add(struct regmap *rmap);
/** Un-register a regmap instance */
void regmap_remove(struct regmap *rmap);
/** Read a register in a regmap instance */
int regmap_read(struct regmap *rmap, unsigned int reg, unsigned int *val);
/** Write a register in a regmap instance */
int regmap_write(struct regmap *rmap, unsigned int reg, unsigned int val);
/** Read-modify-write a register in a regmap instance */
int regmap_update_bits(struct regmap *rmap, unsigned int reg,
unsigned int mask, unsigned int val);
#endif
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