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/* Copyright 2022 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <zephyr/ztest.h>
#include <zephyr/drivers/emul.h>
#include <zephyr/kernel.h>
#include <zephyr/ztest_assert.h>
#include <zephyr/drivers/i2c_emul.h>
#include "keyboard_config.h"
#include "mkbp_fifo.h"
#include "test/drivers/test_state.h"
/* Tests for Matrix Keyboard Protocol (MKBP) */
/* Largest event size that we support */
#define KEY_MATRIX_EVENT_DATA_SIZE KEYBOARD_COLS_MAX
#define MAX_EVENT_DATA_SIZE KEY_MATRIX_EVENT_DATA_SIZE
struct mkbp_fifo_fixture {
uint8_t input_event_data[MAX_EVENT_DATA_SIZE];
};
static void *mkbp_fifo_setup(void)
{
static struct mkbp_fifo_fixture fixture;
return &fixture;
}
static void mkbp_fifo_before(void *data)
{
struct mkbp_fifo_fixture *fixture = data;
mkbp_clear_fifo();
memset(fixture->input_event_data, 0, MAX_EVENT_DATA_SIZE);
mkbp_fifo_depth_update(FIFO_DEPTH);
}
static void mkbp_fifo_after(void *data)
{
mkbp_clear_fifo();
mkbp_fifo_depth_update(FIFO_DEPTH);
}
static void fill_array_with_incrementing_numbers(int8_t *dst, int size)
{
for (int i = 0; i < size; i++) {
dst[i] = i;
}
}
ZTEST_F(mkbp_fifo, test_fifo_add_keyboard_key_matrix_event)
{
uint8_t out[KEY_MATRIX_EVENT_DATA_SIZE + 1];
memset(out, 0, sizeof(out));
fill_array_with_incrementing_numbers(fixture->input_event_data,
KEY_MATRIX_EVENT_DATA_SIZE);
/* Keyboard Key Matrix Event */
zassert_ok(mkbp_fifo_add(EC_MKBP_EVENT_KEY_MATRIX,
fixture->input_event_data),
NULL);
int dequeued_data_size =
mkbp_fifo_get_next_event(out, EC_MKBP_EVENT_KEY_MATRIX);
zassert_equal(dequeued_data_size, KEY_MATRIX_EVENT_DATA_SIZE, NULL);
zassert_mem_equal(fixture->input_event_data, out,
KEY_MATRIX_EVENT_DATA_SIZE, NULL);
zassert_equal(out[KEY_MATRIX_EVENT_DATA_SIZE], 0, NULL);
}
ZTEST_F(mkbp_fifo, test_fifo_depth_update)
{
uint8_t out[KEY_MATRIX_EVENT_DATA_SIZE + 1];
uint8_t new_depth = 0;
mkbp_fifo_depth_update(new_depth);
fill_array_with_incrementing_numbers(fixture->input_event_data,
MAX_EVENT_DATA_SIZE);
zassert_equal(EC_ERROR_OVERFLOW,
mkbp_fifo_add(EC_MKBP_EVENT_KEY_MATRIX,
fixture->input_event_data),
NULL);
zassert_equal(-1, /* get_next_event explicitly returns -1 */
mkbp_fifo_get_next_event(out, EC_MKBP_EVENT_KEY_MATRIX),
NULL);
mkbp_fifo_depth_update(FIFO_DEPTH);
zassert_ok(mkbp_fifo_add(EC_MKBP_EVENT_KEY_MATRIX,
fixture->input_event_data),
NULL);
}
ZTEST_SUITE(mkbp_fifo, drivers_predicate_post_main, mkbp_fifo_setup,
mkbp_fifo_before, mkbp_fifo_after, NULL);
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