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