175 lines
4.1 KiB
C
175 lines
4.1 KiB
C
/*
|
|
* Copyright (c) 2019 Intel Corporation
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @brief Public API for PS/2 devices such as keyboard and mouse.
|
|
* Callers of this API are responsible for setting the typematic rate
|
|
* and decode keys using their desired scan code tables.
|
|
*/
|
|
|
|
#ifndef ZEPHYR_INCLUDE_DRIVERS_PS2_H_
|
|
#define ZEPHYR_INCLUDE_DRIVERS_PS2_H_
|
|
|
|
#include <zephyr/types.h>
|
|
#include <stddef.h>
|
|
#include <device.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* @brief PS/2 Driver APIs
|
|
* @defgroup ps2_interface PS/2 Driver APIs
|
|
* @ingroup io_interfaces
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief PS/2 callback called when user types or click a mouse.
|
|
*
|
|
* @param dev Pointer to the device structure for the driver instance.
|
|
* @param data Data byte passed pack to the user.
|
|
*/
|
|
typedef void (*ps2_callback_t)(struct device *dev, u8_t data);
|
|
|
|
/**
|
|
* @cond INTERNAL_HIDDEN
|
|
*
|
|
* PS2 driver API definition and system call entry points
|
|
*
|
|
* (Internal use only.)
|
|
*/
|
|
typedef int (*ps2_config_t)(struct device *dev, ps2_callback_t callback_isr);
|
|
typedef int (*ps2_read_t)(struct device *dev, u8_t *value);
|
|
typedef int (*ps2_write_t)(struct device *dev, u8_t value);
|
|
typedef int (*ps2_disable_callback_t)(struct device *dev);
|
|
typedef int (*ps2_enable_callback_t)(struct device *dev);
|
|
|
|
struct ps2_driver_api {
|
|
ps2_config_t config;
|
|
ps2_read_t read;
|
|
ps2_write_t write;
|
|
ps2_disable_callback_t disable_callback;
|
|
ps2_enable_callback_t enable_callback;
|
|
};
|
|
/**
|
|
* @endcond
|
|
*/
|
|
|
|
/**
|
|
* @brief Configure a ps2 instance.
|
|
*
|
|
* @param dev Pointer to the device structure for the driver instance.
|
|
* @param callback_isr called when PS/2 devices reply to a configuration
|
|
* command or when a mouse/keyboard send data to the client application.
|
|
*
|
|
* @retval 0 If successful.
|
|
* @retval Negative errno code if failure.
|
|
*/
|
|
__syscall int ps2_config(struct device *dev, ps2_callback_t callback_isr);
|
|
|
|
static inline int z_impl_ps2_config(struct device *dev,
|
|
ps2_callback_t callback_isr)
|
|
{
|
|
const struct ps2_driver_api *api =
|
|
(struct ps2_driver_api *)dev->driver_api;
|
|
|
|
return api->config(dev, callback_isr);
|
|
}
|
|
|
|
/**
|
|
* @brief Write to PS/2 device.
|
|
*
|
|
* @param dev Pointer to the device structure for the driver instance.
|
|
* @param value Data for the PS2 device.
|
|
*
|
|
* @retval 0 If successful.
|
|
* @retval Negative errno code if failure.
|
|
*/
|
|
__syscall int ps2_write(struct device *dev, u8_t value);
|
|
|
|
static inline int z_impl_ps2_write(struct device *dev, u8_t value)
|
|
{
|
|
const struct ps2_driver_api *api =
|
|
(const struct ps2_driver_api *)dev->driver_api;
|
|
|
|
return api->write(dev, value);
|
|
}
|
|
|
|
/**
|
|
* @brief Read slave-to-host values from PS/2 device.
|
|
* @param dev Pointer to the device structure for the driver instance.
|
|
* @param value Pointer used for reading the PS/2 device.
|
|
*
|
|
* @retval 0 If successful.
|
|
* @retval Negative errno code if failure.
|
|
*/
|
|
__syscall int ps2_read(struct device *dev, u8_t *value);
|
|
|
|
static inline int z_impl_ps2_read(struct device *dev, u8_t *value)
|
|
{
|
|
const struct ps2_driver_api *api =
|
|
(const struct ps2_driver_api *)dev->driver_api;
|
|
|
|
return api->read(dev, value);
|
|
}
|
|
|
|
/**
|
|
* @brief Enables callback.
|
|
* @param dev Pointer to the device structure for the driver instance.
|
|
*
|
|
* @retval 0 If successful.
|
|
* @retval Negative errno code if failure.
|
|
*/
|
|
__syscall int ps2_enable_callback(struct device *dev);
|
|
|
|
static inline int z_impl_ps2_enable_callback(struct device *dev)
|
|
{
|
|
const struct ps2_driver_api *api =
|
|
(const struct ps2_driver_api *)dev->driver_api;
|
|
|
|
if (api->enable_callback == NULL) {
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
return api->enable_callback(dev);
|
|
}
|
|
|
|
/**
|
|
* @brief Disables callback.
|
|
* @param dev Pointer to the device structure for the driver instance.
|
|
*
|
|
* @retval 0 If successful.
|
|
* @retval Negative errno code if failure.
|
|
*/
|
|
__syscall int ps2_disable_callback(struct device *dev);
|
|
|
|
static inline int z_impl_ps2_disable_callback(struct device *dev)
|
|
{
|
|
const struct ps2_driver_api *api =
|
|
(const struct ps2_driver_api *)dev->driver_api;
|
|
|
|
if (api->disable_callback == NULL) {
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
return api->disable_callback(dev);
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#include <syscalls/ps2.h>
|
|
|
|
#endif /* ZEPHYR_INCLUDE_DRIVERS_PS2_H_ */
|