diff options
Diffstat (limited to 'cpukit/dev/include/dev/i2c/gpio-nxp-pca9535.h')
-rw-r--r-- | cpukit/dev/include/dev/i2c/gpio-nxp-pca9535.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/cpukit/dev/include/dev/i2c/gpio-nxp-pca9535.h b/cpukit/dev/include/dev/i2c/gpio-nxp-pca9535.h new file mode 100644 index 0000000000..1ebc1a3d4d --- /dev/null +++ b/cpukit/dev/include/dev/i2c/gpio-nxp-pca9535.h @@ -0,0 +1,123 @@ +/** + * @file + * + * @brief GPIO NXP PCA9535 Driver API + * + * @ingroup I2CGPIONXPPCA9535 + */ + +/* + * Copyright (c) 2014 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Dornierstr. 4 + * 82178 Puchheim + * Germany + * <rtems@embedded-brains.de> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#ifndef _DEV_I2C_GPIO_NXP_PCA9539_H +#define _DEV_I2C_GPIO_NXP_PCA9539_H + +#include <dev/i2c/i2c.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +/** + * @defgroup I2CGPIONXPPCA9535 GPIO NXP PCA9535 Driver + * + * @ingroup I2CDevice + * + * @brief Driver for NXP PCA9535 16-bit GPIO device. + * + * @{ + */ + +int i2c_dev_register_gpio_nxp_pca9535( + const char *bus_path, + const char *dev_path, + uint16_t address +); + +#define GPIO_NXP_PCA9535_GET_INPUT (I2C_DEV_IO_CONTROL + 0) + +#define GPIO_NXP_PCA9535_GET_OUTPUT (I2C_DEV_IO_CONTROL + 1) + +#define GPIO_NXP_PCA9535_SET_OUTPUT (I2C_DEV_IO_CONTROL + 2) + +#define GPIO_NXP_PCA9535_CLEAR_AND_SET_OUTPUT (I2C_DEV_IO_CONTROL + 3) + +#define GPIO_NXP_PCA9535_GET_POL_INV (I2C_DEV_IO_CONTROL + 4) + +#define GPIO_NXP_PCA9535_SET_POL_INV (I2C_DEV_IO_CONTROL + 5) + +#define GPIO_NXP_PCA9535_GET_CONFIG (I2C_DEV_IO_CONTROL + 6) + +#define GPIO_NXP_PCA9535_SET_CONFIG (I2C_DEV_IO_CONTROL + 7) + +static inline int gpio_nxp_pca9535_get_input(int fd, uint16_t *val) +{ + return ioctl(fd, GPIO_NXP_PCA9535_GET_INPUT, val); +} + +static inline int gpio_nxp_pca9535_get_output(int fd, uint16_t *val) +{ + return ioctl(fd, GPIO_NXP_PCA9535_GET_OUTPUT, val); +} + +static inline int gpio_nxp_pca9535_set_output(int fd, uint16_t val) +{ + return ioctl(fd, GPIO_NXP_PCA9535_SET_OUTPUT, (void *)(uintptr_t) val); +} + +static inline int gpio_nxp_pca9535_clear_and_set_output( + int fd, + uint16_t clear, + uint16_t set +) +{ + uint32_t clear_and_set = ((uint32_t) set << 16) | (uint32_t) clear; + + return ioctl( + fd, + GPIO_NXP_PCA9535_CLEAR_AND_SET_OUTPUT, + (void *)(uintptr_t) clear_and_set + ); +} + +static inline int gpio_nxp_pca9535_get_polarity_inversion( + int fd, + uint16_t *val +) +{ + return ioctl(fd, GPIO_NXP_PCA9535_GET_POL_INV, val); +} + +static inline int gpio_nxp_pca9535_set_polarity_inversion(int fd, uint16_t val) +{ + return ioctl(fd, GPIO_NXP_PCA9535_SET_POL_INV, (void *)(uintptr_t) val); +} + +static inline int gpio_nxp_pca9535_get_config(int fd, uint16_t *val) +{ + return ioctl(fd, GPIO_NXP_PCA9535_GET_CONFIG, val); +} + +static inline int gpio_nxp_pca9535_set_config(int fd, uint16_t val) +{ + return ioctl(fd, GPIO_NXP_PCA9535_SET_CONFIG, (void *)(uintptr_t) val); +} + +/** @} */ + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* _DEV_I2C_GPIO_NXP_PCA9539_H */ |