60 lines
1.1 KiB
C
60 lines
1.1 KiB
C
/*
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* Copyright (c) 2022 The ZMK Contributors
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*
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* SPDX-License-Identifier: MIT
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*/
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/**
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* @file Header file for the MAX7318 driver.
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*/
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#ifndef ZEPHYR_DRIVERS_GPIO_GPIO_MAX7318_H_
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#define ZEPHYR_DRIVERS_GPIO_GPIO_MAX7318_H_
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#include <kernel.h>
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#include <drivers/gpio.h>
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#include <drivers/i2c.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Register definitions
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#define REG_INPUT_PORTA 0x00
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#define REG_INPUT_PORTB 0x01
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#define REG_OUTPUT_PORTA 0x02
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#define REG_OUTPUT_PORTB 0x03
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#define REG_IPOL_PORTA 0x04
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#define REG_IPOL_PORTB 0x05
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#define REG_CONFIG_PORTA 0x06
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#define REG_CONFIG_PORTB 0x07
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// Configuration data
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struct max7318_config {
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struct gpio_driver_config common;
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const char *const i2c_dev_name;
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const uint16_t device_addr;
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};
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// Runtime driver data
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struct max7318_drv_data {
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// gpio_driver_data needs to be first
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struct gpio_driver_config data;
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const struct device *i2c;
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struct k_sem lock;
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struct {
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uint16_t ipol;
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uint16_t config;
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uint16_t output;
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} reg_cache;
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* ZEPHYR_DRIVERS_GPIO_GPIO_MCP23017_H_ */
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