1/* SPDX-License-Identifier: GPL-2.0 */ 2/* Copyright 2022 William Breathitt Gray */ 3#ifndef _I8255_H_ 4#define _I8255_H_ 5 6struct device; 7struct irq_domain; 8struct regmap; 9 10#define i8255_volatile_regmap_range(_base) regmap_reg_range(_base, _base + 0x2) 11 12/** 13 * struct i8255_regmap_config - Configuration for the register map of an i8255 14 * @parent: parent device 15 * @map: regmap for the i8255 16 * @num_ppi: number of i8255 Programmable Peripheral Interface 17 * @names: (optional) array of names for gpios 18 * @domain: (optional) IRQ domain if the controller is interrupt-capable 19 * 20 * Note: The regmap is expected to have cache enabled and i8255 control 21 * registers not marked as volatile. 22 */ 23struct i8255_regmap_config { 24 struct device *parent; 25 struct regmap *map; 26 int num_ppi; 27 const char *const *names; 28 struct irq_domain *domain; 29}; 30 31int devm_i8255_regmap_register(struct device *dev, 32 const struct i8255_regmap_config *config); 33 34#endif /* _I8255_H_ */ 35