zmk_mf68/app/include/drivers/ext_power.h
Mega Mind 4d81b10ba7 Added driver to control the external power output
This PR adds support to control the external power output from controllers like nice!nano, nRFMicro etc

I have implemented based on my understanding of Pete suggestion on this feature.

Testing done:

    Tested by enabling and disabling the ext_power from application and verified
    Verified the application does not crash with boards that does not have ext_power support
    Note:
    I did not test this in nice!nano since I don't have the boards. Will get help from others once the behavior PR is up

Next Steps:

    Create a behavior PR to control enable/disable ext_power
2020-10-10 08:11:46 +08:00

104 lines
2.2 KiB
C

/*
* Copyright (c) 2020 The ZMK Contributors
*
* SPDX-License-Identifier: MIT
*/
#pragma once
#include <zephyr/types.h>
#include <stddef.h>
#include <device.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @cond INTERNAL_HIDDEN
*
* Behavior driver API definition and system call entry points.
*
* (Internal use only.)
*/
typedef int (*ext_power_enable_t)(struct device *dev);
typedef int (*ext_power_disable_t)(struct device *dev);
typedef int (*ext_power_get_t)(struct device *dev);
__subsystem struct ext_power_api {
ext_power_enable_t enable;
ext_power_disable_t disable;
ext_power_get_t get;
};
/**
* @endcond
*/
/**
* @brief Enable the external power output
* @param dev Pointer to the device structure for the driver instance.
*
* @retval 0 If successful.
* @retval Negative errno code if failure.
*/
__syscall int ext_power_enable(struct device *dev);
static inline int z_impl_ext_power_enable(struct device *dev) {
const struct ext_power_api *api = (const struct ext_power_api *)dev->driver_api;
if (api->enable == NULL) {
return -ENOTSUP;
}
return api->enable(dev);
}
/**
* @brief Disable the external power output
* @param dev Pointer to the device structure for the driver instance.
*
* @retval 0 If successful.
* @retval Negative errno code if failure.
*/
__syscall int ext_power_disable(struct device *dev);
static inline int z_impl_ext_power_disable(struct device *dev) {
const struct ext_power_api *api = (const struct ext_power_api *)dev->driver_api;
if (api->disable == NULL) {
return -ENOTSUP;
}
return api->disable(dev);
}
/**
* @brief Get the current status of the external power output
* @param dev Pointer to the device structure for the driver instance.
*
* @retval 0 If ext power is disabled.
* @retval 1 if ext power is enabled.
* @retval Negative errno code if failure.
*/
__syscall int ext_power_get(struct device *dev);
static inline int z_impl_ext_power_get(struct device *dev) {
const struct ext_power_api *api = (const struct ext_power_api *)dev->driver_api;
if (api->get == NULL) {
return -ENOTSUP;
}
return api->get(dev);
}
#ifdef __cplusplus
}
#endif
/**
* @}
*/
#include <syscalls/ext_power.h>