RTEMS 6.1-rc4
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gpio-nxp-pca9535.h
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1/* SPDX-License-Identifier: BSD-2-Clause */
2
11/*
12 * Copyright (c) 2014 embedded brains GmbH & Co. KG
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
24 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
27 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 */
35
36#ifndef _DEV_I2C_GPIO_NXP_PCA9539_H
37#define _DEV_I2C_GPIO_NXP_PCA9539_H
38
39#include <dev/i2c/i2c.h>
40
41#ifdef __cplusplus
42extern "C" {
43#endif /* __cplusplus */
44
55int i2c_dev_register_gpio_nxp_pca9535(
56 const char *bus_path,
57 const char *dev_path,
58 uint16_t address
59);
60
61#define GPIO_NXP_PCA9535_GET_INPUT (I2C_DEV_IO_CONTROL + 0)
62
63#define GPIO_NXP_PCA9535_GET_OUTPUT (I2C_DEV_IO_CONTROL + 1)
64
65#define GPIO_NXP_PCA9535_SET_OUTPUT (I2C_DEV_IO_CONTROL + 2)
66
67#define GPIO_NXP_PCA9535_CLEAR_AND_SET_OUTPUT (I2C_DEV_IO_CONTROL + 3)
68
69#define GPIO_NXP_PCA9535_GET_POL_INV (I2C_DEV_IO_CONTROL + 4)
70
71#define GPIO_NXP_PCA9535_SET_POL_INV (I2C_DEV_IO_CONTROL + 5)
72
73#define GPIO_NXP_PCA9535_GET_CONFIG (I2C_DEV_IO_CONTROL + 6)
74
75#define GPIO_NXP_PCA9535_SET_CONFIG (I2C_DEV_IO_CONTROL + 7)
76
77static inline int gpio_nxp_pca9535_get_input(int fd, uint16_t *val)
78{
79 return ioctl(fd, GPIO_NXP_PCA9535_GET_INPUT, val);
80}
81
82static inline int gpio_nxp_pca9535_get_output(int fd, uint16_t *val)
83{
84 return ioctl(fd, GPIO_NXP_PCA9535_GET_OUTPUT, val);
85}
86
87static inline int gpio_nxp_pca9535_set_output(int fd, uint16_t val)
88{
89 return ioctl(fd, GPIO_NXP_PCA9535_SET_OUTPUT, (void *)(uintptr_t) val);
90}
91
92static inline int gpio_nxp_pca9535_clear_and_set_output(
93 int fd,
94 uint16_t clear,
95 uint16_t set
96)
97{
98 uint32_t clear_and_set = ((uint32_t) set << 16) | (uint32_t) clear;
99
100 return ioctl(
101 fd,
102 GPIO_NXP_PCA9535_CLEAR_AND_SET_OUTPUT,
103 (void *)(uintptr_t) clear_and_set
104 );
105}
106
107static inline int gpio_nxp_pca9535_get_polarity_inversion(
108 int fd,
109 uint16_t *val
110)
111{
112 return ioctl(fd, GPIO_NXP_PCA9535_GET_POL_INV, val);
113}
114
115static inline int gpio_nxp_pca9535_set_polarity_inversion(int fd, uint16_t val)
116{
117 return ioctl(fd, GPIO_NXP_PCA9535_SET_POL_INV, (void *)(uintptr_t) val);
118}
119
120static inline int gpio_nxp_pca9535_get_config(int fd, uint16_t *val)
121{
122 return ioctl(fd, GPIO_NXP_PCA9535_GET_CONFIG, val);
123}
124
125static inline int gpio_nxp_pca9535_set_config(int fd, uint16_t val)
126{
127 return ioctl(fd, GPIO_NXP_PCA9535_SET_CONFIG, (void *)(uintptr_t) val);
128}
129
132#ifdef __cplusplus
133}
134#endif /* __cplusplus */
135
136#endif /* _DEV_I2C_GPIO_NXP_PCA9539_H */
Inter-Integrated Circuit (I2C) Driver API.