kscan.h

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/*
 * Copyright (c) 2019 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_DRIVERS_KB_SCAN_H_
#define ZEPHYR_INCLUDE_DRIVERS_KB_SCAN_H_
 
#include <zephyr/types.h>
#include <stddef.h>
#include <device.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef void (*kscan_callback_t)(const struct device *dev, uint32_t row,
                                 uint32_t column,
                                 bool pressed);
 
typedef int (*kscan_config_t)(const struct device *dev,
                              kscan_callback_t callback);
typedef int (*kscan_disable_callback_t)(const struct device *dev);
typedef int (*kscan_enable_callback_t)(const struct device *dev);
 
__subsystem struct kscan_driver_api {
        kscan_config_t config;
        kscan_disable_callback_t disable_callback;
        kscan_enable_callback_t enable_callback;
};
__syscall int kscan_config(const struct device *dev,
                             kscan_callback_t callback);
 
static inline int z_impl_kscan_config(const struct device *dev,
                                        kscan_callback_t callback)
{
        const struct kscan_driver_api *api =
                                (struct kscan_driver_api *)dev->api;
 
        return api->config(dev, callback);
}
__syscall int kscan_enable_callback(const struct device *dev);
 
static inline int z_impl_kscan_enable_callback(const struct device *dev)
{
        const struct kscan_driver_api *api =
                        (const struct kscan_driver_api *)dev->api;
 
        if (api->enable_callback == NULL) {
                return -ENOSYS;
        }
 
        return api->enable_callback(dev);
}
 
__syscall int kscan_disable_callback(const struct device *dev);
 
static inline int z_impl_kscan_disable_callback(const struct device *dev)
{
        const struct kscan_driver_api *api =
                        (const struct kscan_driver_api *)dev->api;
 
        if (api->disable_callback == NULL) {
                return -ENOSYS;
        }
 
        return api->disable_callback(dev);
}
 
#ifdef __cplusplus
}
#endif
 
#include <syscalls/kscan.h>
 
#endif /* ZEPHYR_INCLUDE_DRIVERS_KB_SCAN_H_ */