eafd0d9d21
PCA95XX is a series of compatible I2C-based GPIO expanders, with common registers on input/output, polarity and configuration. This renames the original PCAL9535A driver to PCA95XX to indicate that it can support this series. Additional features on variants are guarded by kconfigs. Signed-off-by: Daniel Leung <daniel.leung@intel.com>
61 lines
1.1 KiB
C
61 lines
1.1 KiB
C
/*
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* Copyright (c) 2015 Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file Header file for the PCA95XX driver.
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*/
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#ifndef ZEPHYR_DRIVERS_GPIO_GPIO_PCA95XX_H_
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#define ZEPHYR_DRIVERS_GPIO_GPIO_PCA95XX_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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/** Configuration data */
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struct gpio_pca95xx_config {
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/** The master I2C device's name */
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const char * const i2c_master_dev_name;
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/** The slave address of the chip */
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u16_t i2c_slave_addr;
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u8_t capabilities;
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};
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/** Store the port 0/1 data for each register pair. */
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union gpio_pca95xx_port_data {
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u16_t all;
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u8_t port[2];
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u8_t byte[2];
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};
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/** Runtime driver data */
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struct gpio_pca95xx_drv_data {
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/* gpio_driver_data needs to be first */
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struct gpio_driver_data common;
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/** Master I2C device */
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struct device *i2c_master;
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struct {
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union gpio_pca95xx_port_data output;
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union gpio_pca95xx_port_data dir;
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union gpio_pca95xx_port_data pud_en;
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union gpio_pca95xx_port_data pud_sel;
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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_PCA95XX_H_ */
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