1fb38af4aSWilliam Breathitt Gray /* SPDX-License-Identifier: GPL-2.0 */ 2fb38af4aSWilliam Breathitt Gray /* Copyright 2022 William Breathitt Gray */ 3fb38af4aSWilliam Breathitt Gray #ifndef _I8255_H_ 4fb38af4aSWilliam Breathitt Gray #define _I8255_H_ 5fb38af4aSWilliam Breathitt Gray 6*0b7c490dSWilliam Breathitt Gray struct device; 7*0b7c490dSWilliam Breathitt Gray struct irq_domain; 8*0b7c490dSWilliam Breathitt Gray struct regmap; 9*0b7c490dSWilliam Breathitt Gray 10*0b7c490dSWilliam Breathitt Gray #define i8255_volatile_regmap_range(_base) regmap_reg_range(_base, _base + 0x2) 11*0b7c490dSWilliam Breathitt Gray 12*0b7c490dSWilliam Breathitt Gray /** 13*0b7c490dSWilliam Breathitt Gray * struct i8255_regmap_config - Configuration for the register map of an i8255 14*0b7c490dSWilliam Breathitt Gray * @parent: parent device 15*0b7c490dSWilliam Breathitt Gray * @map: regmap for the i8255 16*0b7c490dSWilliam Breathitt Gray * @num_ppi: number of i8255 Programmable Peripheral Interface 17*0b7c490dSWilliam Breathitt Gray * @names: (optional) array of names for gpios 18*0b7c490dSWilliam Breathitt Gray * @domain: (optional) IRQ domain if the controller is interrupt-capable 19*0b7c490dSWilliam Breathitt Gray * 20*0b7c490dSWilliam Breathitt Gray * Note: The regmap is expected to have cache enabled and i8255 control 21*0b7c490dSWilliam Breathitt Gray * registers not marked as volatile. 22*0b7c490dSWilliam Breathitt Gray */ 23*0b7c490dSWilliam Breathitt Gray struct i8255_regmap_config { 24*0b7c490dSWilliam Breathitt Gray struct device *parent; 25*0b7c490dSWilliam Breathitt Gray struct regmap *map; 26*0b7c490dSWilliam Breathitt Gray int num_ppi; 27*0b7c490dSWilliam Breathitt Gray const char *const *names; 28*0b7c490dSWilliam Breathitt Gray struct irq_domain *domain; 29*0b7c490dSWilliam Breathitt Gray }; 30*0b7c490dSWilliam Breathitt Gray 31*0b7c490dSWilliam Breathitt Gray int devm_i8255_regmap_register(struct device *dev, 32*0b7c490dSWilliam Breathitt Gray const struct i8255_regmap_config *config); 33*0b7c490dSWilliam Breathitt Gray 34fb38af4aSWilliam Breathitt Gray #endif /* _I8255_H_ */ 35