include/hw/gpio/pca9554.h

   1 /*
   2  * PCA9554 I/O port
   3  *
   4  * Copyright (c) 2023, IBM Corporation.
   5  *
   6  * SPDX-License-Identifier: GPL-2.0-or-later
   7  */
   8 #ifndef PCA9554_H
   9 #define PCA9554_H
  10
  11 #include "hw/i2c/i2c.h"
  12 #include "qom/object.h"
  13
  14 #define TYPE_PCA9554 "pca9554"
  15 typedef struct PCA9554State PCA9554State;
  16 DECLARE_INSTANCE_CHECKER(PCA9554State, PCA9554,
  17                          TYPE_PCA9554)
  18
  19 #define PCA9554_NR_REGS 4
  20 #define PCA9554_PIN_COUNT 8
  21
  22 struct PCA9554State {
  23     /*< private >*/
  24     I2CSlave i2c;
  25     /*< public >*/
  26
  27     uint8_t len;
  28     uint8_t pointer;
  29
  30     uint8_t regs[PCA9554_NR_REGS];
  31     qemu_irq gpio_out[PCA9554_PIN_COUNT];
  32     uint8_t ext_state[PCA9554_PIN_COUNT];
  33     char *description; /* For debugging purpose only */
  34 };
  35
  36 #endif