| /* | |
| * PCA9554 I/O port registers | |
| * | |
| * Copyright (c) 2023, IBM Corporation. | |
| * | |
| * SPDX-License-Identifier: GPL-2.0-or-later | |
| */ | |
| #ifndef PCA9554_REGS_H | |
| #define PCA9554_REGS_H | |
| /* | |
| * Bits [0:1] are used to address a specific register. | |
| */ | |
| #define PCA9554_INPUT 0 /* read only input register */ | |
| #define PCA9554_OUTPUT 1 /* read/write pin output state */ | |
| #define PCA9554_POLARITY 2 /* Set polarity of input register */ | |
| #define PCA9554_CONFIG 3 /* Set pins as inputs our ouputs */ | |
| #endif |