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drivers: input: cst816s: read the gesture-ID register

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And report the gestures as specific device  event type
to the input subsystem.

Signed-off-by: Felipe Neves <ryukokki.felipe@gmail.com>
This commit is contained in:
Felipe Neves 2024-07-29 12:21:39 -03:00 committed by Fabio Baltieri
parent acaee9f019
commit 804db65928
3 changed files with 46 additions and 0 deletions
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5
drivers/input/Kconfig.cst816s
View file

@ -25,4 +25,9 @@ config INPUT_CST816S_INTERRUPT
help
Enable interrupt support (requires GPIO).
config INPUT_CST816S_EV_DEVICE
bool "Device specific event support"
help
Enable device specific event support.
endif # INPUT_CST816S

23
drivers/input/input_cst816s.c
View file

@ -11,6 +11,7 @@
#include <zephyr/drivers/i2c.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/logging/log.h>
#include <zephyr/dt-bindings/input/cst816s-gesture-codes.h>
LOG_MODULE_REGISTER(cst816s, CONFIG_INPUT_LOG_LEVEL);
@ -115,6 +116,16 @@ static int cst816s_process(const struct device *dev)
uint16_t x;
uint16_t y;
#ifdef CONFIG_INPUT_CST816S_EV_DEVICE
uint8_t gesture;
r = i2c_burst_read_dt(&cfg->i2c, CST816S_REG_GESTURE_ID, &gesture, sizeof(gesture));
if (r < 0) {
LOG_ERR("Could not read gesture-ID data");
return r;
}
#endif
r = i2c_burst_read_dt(&cfg->i2c, CST816S_REG_XPOS_H, (uint8_t *)&x, sizeof(x));
if (r < 0) {
LOG_ERR("Could not read x data");
@ -142,6 +153,18 @@ static int cst816s_process(const struct device *dev)
input_report_key(dev, INPUT_BTN_TOUCH, 0, true, K_FOREVER);
}
#ifdef CONFIG_INPUT_CST816S_EV_DEVICE
/* Also put the custom touch gestures into the input queue,
* some applications may want to process it
*/
LOG_DBG("gesture: %d", gesture);
if (gesture != CST816S_GESTURE_CODE_NONE) {
input_report(dev, INPUT_EV_DEVICE, (uint16_t)gesture, 0, true, K_FOREVER);
}
#endif
return r;
}

18
include/zephyr/dt-bindings/input/cst816s-gesture-codes.h Normal file
View file

@ -0,0 +1,18 @@
/*
* Copyright (c) 2024 Felipe Neves.
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_INCLUDE_DT_BINDINGS_INPUT_CST816S_GESTURE_CODES_H_
#define ZEPHYR_INCLUDE_DT_BINDINGS_INPUT_CST816S_GESTURE_CODES_H_
#define CST816S_GESTURE_CODE_NONE 0x00
#define CST816S_GESTURE_CODE_SWIPE_UP 0x01
#define CST816S_GESTURE_CODE_SWIPE_DOWN 0x02
#define CST816S_GESTURE_CODE_SWIPE_LEFT 0x03
#define CST816S_GESTURE_CODE_SWIPE_RIGHT 0x04
#define CST816S_GESTURE_CODE_SINGLE_CLICK 0x05
#define CST816S_GESTURE_CODE_DOUBLE_CLICK 0x0B
#define CST816S_GESTURE_CODE_LONG_PRESS 0x0C
#endif