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test: added gpio_kpp test implementation.
added gpio_kpp test implementation. Signed-off-by: Qiang Zhang <[email protected]>
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‎tests/drivers/input/gpio_kpp/CMakeLists.txt

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# SPDX-License-Identifier: Apache-2.0
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cmake_minimum_required(VERSION 3.20.0)
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find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
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project(input_kpp)
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target_include_directories(app PRIVATE ${ZEPHYR_BASE}/drivers/input)
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FILE(GLOB app_sources src/*.c)
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target_sources(app PRIVATE ${app_sources})

‎tests/drivers/input/gpio_kpp/boards/mimxrt1180_evk_mimxrt1189_cm33.overlay

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/*
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* Copyright 2025 NXP
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/ {
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aliases {
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kpp = &kpp;
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};
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};
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&pinctrl {
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kpp_default: kpp_default {
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group0 {
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pinmux = <
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&iomuxc_gpio_sd_b1_00_kpp_row7
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&iomuxc_gpio_sd_b1_01_kpp_col7
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&iomuxc_gpio_sd_b1_02_kpp_row6
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&iomuxc_gpio_sd_b1_03_kpp_col6
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>;
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drive-strength = "high";
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bias-pull-up;
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slew-rate = "fast";
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};
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};
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};
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&kpp {
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pinctrl-0 = <&kpp_default>;
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pinctrl-names = "default";
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status = "okay";
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};

‎tests/drivers/input/gpio_kpp/boards/mimxrt1180_evk_mimxrt1189_cm7.overlay

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/*
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* Copyright 2025 NXP
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/ {
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aliases {
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kpp = &kpp;
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};
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};
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&pinctrl {
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kpp_default: kpp_default {
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group0 {
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pinmux = <
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&iomuxc_gpio_sd_b1_00_kpp_row7
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&iomuxc_gpio_sd_b1_01_kpp_col7
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&iomuxc_gpio_sd_b1_02_kpp_row6
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&iomuxc_gpio_sd_b1_03_kpp_col6
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>;
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drive-strength = "high";
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bias-pull-up;
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slew-rate = "fast";
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};
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};
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};
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&kpp {
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pinctrl-0 = <&kpp_default>;
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pinctrl-names = "default";
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status = "okay";
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};

‎tests/drivers/input/gpio_kpp/prj.conf

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CONFIG_ZTEST=y
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CONFIG_INPUT=y

‎tests/drivers/input/gpio_kpp/src/main.c

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/*
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* Copyright (c) 2024 Arif Balik <[email protected]>
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/device.h>
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#include <zephyr/input/input.h>
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#include <zephyr/input/input_kpp.h>
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#include <zephyr/kernel.h>
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#include <zephyr/sys/util.h>
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#include <zephyr/ztest.h>
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#include <soc.h>
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#include <autoconf.h>
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#include <inttypes.h>
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#include <zephyr/drivers/gpio.h>
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#if DT_NODE_HAS_STATUS_OKAY(DT_ALIAS(kpp))
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#define KPP_NODE DT_ALIAS(kpp)
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#else
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#error "Could not find an KPP compatible device in DT"
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#endif
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#define TEST_KPP_ACTIVE_COLUMROWS (0xFF)
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#define WAIT_FOR_IDLE_TIMEOUT_US (5 * USEC_PER_SEC)
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ZTEST_SUITE(kpp_scan, NULL, NULL, NULL, NULL, NULL);
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volatile bool g_kpp_interrupt;
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uint8_t read_keys[INPUT_KPP_COLUMNNUM_MAX] = {0};
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static const struct device *test_dev = DEVICE_DT_GET(KPP_NODE);
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static void kpp_scan_wait_for_idle(void)
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{
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k_busy_wait(1000);
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if (!g_kpp_interrupt) {
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zassert_true((!g_kpp_interrupt), "timeout waiting for idle state");
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}
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}
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static void kpp_scan_data_check(uint8_t *data)
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{
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int row_data_mask;
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for (int i = 0; i < INPUT_KPP_COLUMNNUM_MAX; i++) {
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if (data[i] != 0) {
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row_data_mask = data[i];
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for (int j = 0; j < INPUT_KPP_ROWNUM_MAX; j++) {
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if ((row_data_mask & (1 << j)) == 0) {
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continue;
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}
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TC_PRINT("Key pressed at row %d, column %d", j, i);
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}
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}
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}
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}
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static void kpp_cb(const struct device *dev)
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{
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input_kpp_scan(dev, &read_keys[0]);
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g_kpp_interrupt = true;
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}
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ZTEST(kpp_scan, test_kpp_keypress_interrupt)
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{
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input_kpp_set_callback(test_dev, kpp_cb);
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input_kpp_config(test_dev, TEST_KPP_ACTIVE_COLUMROWS,
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TEST_KPP_ACTIVE_COLUMROWS, KPP_EVENT_KEY_DPRESS);
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kpp_scan_wait_for_idle();
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zexpect_true(g_kpp_interrupt);
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g_kpp_interrupt = false;
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kpp_scan_data_check(&read_keys[0]);
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}
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ZTEST(kpp_scan, test_kppkeyrelease_interrupt)
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{
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input_kpp_set_callback(test_dev, kpp_cb);
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input_kpp_config(test_dev, TEST_KPP_ACTIVE_COLUMROWS,
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TEST_KPP_ACTIVE_COLUMROWS, KPP_EVENT_KEY_RELEASE);
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kpp_scan_wait_for_idle();
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zexpect_true(g_kpp_interrupt);
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g_kpp_interrupt = false;
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}

‎tests/drivers/input/gpio_kpp/testcase.yaml

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tests:
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drivers.input.kpp_scan:
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tags: drivers input kpp
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filter: dt_compat_enabled("nxp,mcux-kpp")
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depends_on: kpp

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