1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright 2022 William Breathitt Gray */
3 #ifndef _I8255_H_
4 #define _I8255_H_
5 
6 struct device;
7 struct irq_domain;
8 struct 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  */
23 struct 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 
31 int devm_i8255_regmap_register(struct device *dev,
32 			       const struct i8255_regmap_config *config);
33 
34 #endif /* _I8255_H_ */
35