forked from Imagelibrary/rtems
118 lines
2.6 KiB
C
118 lines
2.6 KiB
C
/**
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* @file
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*
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* @brief GPIO NXP PCA9535 Driver API
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*
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* @ingroup I2CGPIONXPPCA9535
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*/
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/*
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* Copyright (c) 2014 embedded brains GmbH. All rights reserved.
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#ifndef _DEV_I2C_GPIO_NXP_PCA9539_H
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#define _DEV_I2C_GPIO_NXP_PCA9539_H
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#include <dev/i2c/i2c.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/**
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* @defgroup I2CGPIONXPPCA9535 GPIO NXP PCA9535 Driver
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*
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* @ingroup I2CDevice
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*
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* @brief Driver for NXP PCA9535 16-bit GPIO device.
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*
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* @{
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*/
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int i2c_dev_register_gpio_nxp_pca9535(
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const char *bus_path,
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const char *dev_path,
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uint16_t address
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);
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#define GPIO_NXP_PCA9535_GET_INPUT (I2C_DEV_IO_CONTROL + 0)
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#define GPIO_NXP_PCA9535_GET_OUTPUT (I2C_DEV_IO_CONTROL + 1)
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#define GPIO_NXP_PCA9535_SET_OUTPUT (I2C_DEV_IO_CONTROL + 2)
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#define GPIO_NXP_PCA9535_CLEAR_AND_SET_OUTPUT (I2C_DEV_IO_CONTROL + 3)
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#define GPIO_NXP_PCA9535_GET_POL_INV (I2C_DEV_IO_CONTROL + 4)
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#define GPIO_NXP_PCA9535_SET_POL_INV (I2C_DEV_IO_CONTROL + 5)
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#define GPIO_NXP_PCA9535_GET_CONFIG (I2C_DEV_IO_CONTROL + 6)
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#define GPIO_NXP_PCA9535_SET_CONFIG (I2C_DEV_IO_CONTROL + 7)
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static inline int gpio_nxp_pca9535_get_input(int fd, uint16_t *val)
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{
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return ioctl(fd, GPIO_NXP_PCA9535_GET_INPUT, val);
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}
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static inline int gpio_nxp_pca9535_get_output(int fd, uint16_t *val)
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{
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return ioctl(fd, GPIO_NXP_PCA9535_GET_OUTPUT, val);
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}
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static inline int gpio_nxp_pca9535_set_output(int fd, uint16_t val)
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{
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return ioctl(fd, GPIO_NXP_PCA9535_SET_OUTPUT, (void *)(uintptr_t) val);
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}
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static inline int gpio_nxp_pca9535_clear_and_set_output(
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int fd,
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uint16_t clear,
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uint16_t set
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)
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{
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uint32_t clear_and_set = ((uint32_t) set << 16) | (uint32_t) clear;
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return ioctl(
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fd,
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GPIO_NXP_PCA9535_CLEAR_AND_SET_OUTPUT,
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(void *)(uintptr_t) clear_and_set
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);
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}
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static inline int gpio_nxp_pca9535_get_polarity_inversion(
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int fd,
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uint16_t *val
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)
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{
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return ioctl(fd, GPIO_NXP_PCA9535_GET_POL_INV, val);
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}
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static inline int gpio_nxp_pca9535_set_polarity_inversion(int fd, uint16_t val)
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{
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return ioctl(fd, GPIO_NXP_PCA9535_SET_POL_INV, (void *)(uintptr_t) val);
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}
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static inline int gpio_nxp_pca9535_get_config(int fd, uint16_t *val)
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{
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return ioctl(fd, GPIO_NXP_PCA9535_GET_CONFIG, val);
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}
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static inline int gpio_nxp_pca9535_set_config(int fd, uint16_t val)
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{
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return ioctl(fd, GPIO_NXP_PCA9535_SET_CONFIG, (void *)(uintptr_t) val);
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}
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/** @} */
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* _DEV_I2C_GPIO_NXP_PCA9539_H */
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