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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 "console.h"
#include "host_command.h"
#include "keyboard_backlight.h"
#include "pwm_mock.h"
#include "test/drivers/test_state.h"
#include <stdint.h>
#include <string.h>
#include <zephyr/drivers/pwm.h>
#include <zephyr/kernel.h>
#include <zephyr/shell/shell_dummy.h>
#include <zephyr/ztest.h>
#include <zephyr/ztest_assert.h>
#define KBLIGHT_PWM_NODE DT_COMPAT_GET_ANY_STATUS_OKAY(cros_ec_kblight_pwm)
extern const struct kblight_drv kblight_pwm;
/**
* @brief Send host command to set the backlight percentage
*
* @param percent Backlight intensity, from 0 to 100 (inclusive).
* @return uint16_t Host command return code
*/
static uint16_t set_backlight_percent_helper(uint8_t percent)
{
struct ec_params_pwm_set_keyboard_backlight params = {
.percent = percent
};
struct host_cmd_handler_args args = BUILD_HOST_COMMAND_PARAMS(
EC_CMD_PWM_SET_KEYBOARD_BACKLIGHT, 0, params);
return host_command_process(&args);
}
ZTEST(keyboard_backlight, host_command_set_backlight__normal)
{
/* Set the backlight intensity level to this and verify */
uint8_t expected_percentage = 50;
zassert_ok(set_backlight_percent_helper(expected_percentage), NULL);
zassert_equal(expected_percentage, kblight_get(), NULL);
}
ZTEST(keyboard_backlight, host_command_set_backlight__out_of_range)
{
/* Too high */
uint8_t expected_percentage = 101;
zassert_equal(EC_RES_ERROR,
set_backlight_percent_helper(expected_percentage), NULL);
}
ZTEST(keyboard_backlight, host_command_get_backlight__normal)
{
/* Set this backlight intensity and verify via host command */
uint8_t expected_percentage = 50;
int ret;
zassert_ok(set_backlight_percent_helper(expected_percentage), NULL);
/* Brief delay to allow a deferred function to enable the backlight */
k_sleep(K_MSEC(50));
struct ec_response_pwm_get_keyboard_backlight response;
struct host_cmd_handler_args args = BUILD_HOST_COMMAND_RESPONSE(
EC_CMD_PWM_GET_KEYBOARD_BACKLIGHT, 0, response);
ret = host_command_process(&args);
zassert_ok(ret, "Host command failed: %d", ret);
zassert_equal(expected_percentage, response.percent, NULL);
zassert_equal(1, response.enabled, "Got 0x%02x", response.enabled);
}
ZTEST(keyboard_backlight, console_command__noargs)
{
/* Command should print current status. Set backlight on and to 70% */
const char *outbuffer;
size_t buffer_size;
zassert_ok(set_backlight_percent_helper(70), NULL);
k_sleep(K_MSEC(50));
/* With no args, print current state */
shell_backend_dummy_clear_output(get_ec_shell());
zassert_ok(shell_execute_cmd(get_ec_shell(), "kblight"), NULL);
outbuffer =
shell_backend_dummy_get_output(get_ec_shell(), &buffer_size);
zassert_ok(!strstr(outbuffer, "Keyboard backlight: 70% enabled: 1"),
"Actual string: `%s`", outbuffer);
}
ZTEST(keyboard_backlight, console_command__set_on)
{
/* Command should enable backlight to given intensity */
zassert_ok(shell_execute_cmd(get_ec_shell(), "kblight 65"), NULL);
zassert_equal(65, kblight_get(), NULL);
zassert_equal(1, kblight_get_current_enable(), NULL);
}
ZTEST(keyboard_backlight, console_command__set_off)
{
zassert_ok(set_backlight_percent_helper(40), NULL);
k_sleep(K_MSEC(50));
/* Turn back off */
zassert_ok(shell_execute_cmd(get_ec_shell(), "kblight 0"), NULL);
zassert_equal(0, kblight_get(), NULL);
zassert_equal(0, kblight_get_current_enable(), NULL);
}
ZTEST(keyboard_backlight, console_command__bad_params)
{
zassert_equal(EC_ERROR_PARAM1,
shell_execute_cmd(get_ec_shell(), "kblight NaN"), NULL);
zassert_equal(EC_ERROR_PARAM1,
shell_execute_cmd(get_ec_shell(), "kblight -1"), NULL);
zassert_equal(EC_ERROR_PARAM1,
shell_execute_cmd(get_ec_shell(), "kblight 101"), NULL);
}
ZTEST(keyboard_backlight, set_backlight__device_not_ready)
{
const struct pwm_dt_spec kblight_pwm_dt =
PWM_DT_SPEC_GET(KBLIGHT_PWM_NODE);
const struct device *pwm_dev = kblight_pwm_dt.dev;
int initial_duty;
int initialized_saved;
initial_duty = pwm_mock_get_duty(pwm_dev, kblight_pwm_dt.channel);
initialized_saved = pwm_dev->state->initialized;
pwm_dev->state->initialized = 0;
zassert_ok(kblight_pwm.set(initial_duty + 10), NULL);
zassert_equal(initial_duty,
pwm_mock_get_duty(pwm_dev, kblight_pwm_dt.channel), NULL);
pwm_dev->state->initialized = initialized_saved;
}
static void reset(void *data)
{
ARG_UNUSED(data);
/* Reset the backlight to off and 0% brightness */
kblight_set(0);
kblight_enable(0);
}
ZTEST_SUITE(keyboard_backlight, drivers_predicate_post_main, NULL, reset, reset,
NULL);
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