74e84a9dfd
Adds a way of reporting touchscreen events taking common properties into account. Signed-off-by: Dominik Lau <dlau@internships.antmicro.com> Signed-off-by: Filip Kokosinski <fkokosinski@antmicro.com>
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
/*
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* Copyright (c) 2024 Antmicro <www.antmicro.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_INCLUDE_INPUT_TOUCH_H_
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#define ZEPHYR_INCLUDE_INPUT_TOUCH_H_
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/**
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* @brief Touch Events API
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* @defgroup touch_events Touchscreen Event Report API
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* @since 3.7
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* @version 0.1.0
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* @ingroup io_interfaces
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* @{
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*/
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#include <zephyr/input/input.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Common touchscreen config.
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*
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* This structure **must** be placed first in the driver's config structure.
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*
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* @param screen_width Horizontal resolution of touchscreen
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* @param screen_height Vertical resolution of touchscreen
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* @param inverted_x X axis is inverted
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* @param inverted_y Y axis is inverted
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* @param swapped_x_y X and Y axes are swapped
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*
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* see touchscreem-common.yaml for more details
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*/
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struct input_touchscreen_common_config {
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uint32_t screen_width;
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uint32_t screen_height;
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bool inverted_x;
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bool inverted_y;
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bool swapped_x_y;
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};
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/**
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* @brief Initialize common touchscreen config from devicetree
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*
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* @param node_id The devicetree node identifier.
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*/
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#define INPUT_TOUCH_DT_COMMON_CONFIG_INIT(node_id) \
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{ \
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.screen_width = DT_PROP(node_id, screen_width), \
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.screen_height = DT_PROP(node_id, screen_height), \
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.inverted_x = DT_PROP(node_id, inverted_x), \
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.inverted_y = DT_PROP(node_id, inverted_y), \
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.swapped_x_y = DT_PROP(node_id, swapped_x_y) \
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}
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/**
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* @brief Initialize common touchscreen config from devicetree instance.
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*
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* @param inst Instance.
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*/
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#define INPUT_TOUCH_DT_INST_COMMON_CONFIG_INIT(inst) \
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INPUT_TOUCH_DT_COMMON_CONFIG_INIT(DT_DRV_INST(inst))
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/**
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* @brief Validate the offset of the common config structure.
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*
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* @param config Name of the config structure.
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*/
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#define INPUT_TOUCH_STRUCT_CHECK(config) \
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BUILD_ASSERT(offsetof(config, common) == 0, \
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"struct input_touchscreen_common_config must be placed first");
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/**
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* @brief Common utility for reporting touchscreen position events.
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*
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* @param dev Touchscreen controller
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* @param x X coordinate as reported by the controller
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* @param y Y coordinate as reported by the controller
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* @param timeout Timeout for reporting the event
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*/
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void input_touchscreen_report_pos(const struct device *dev,
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uint32_t x, uint32_t y,
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k_timeout_t timeout);
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#ifdef __cplusplus
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}
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#endif
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/** @} */
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#endif /* ZEPHYR_INCLUDE_INPUT_TOUCH_H_ */
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