drivers/gpio/gpio-i8255.h

   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_ */