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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.
*
* Battery LED control for Steelix
*/
#include <zephyr/drivers/pwm.h>
#include <zephyr/logging/log.h>
#include "board_led.h"
#include "common.h"
#include "cros_cbi.h"
#include "led_common.h"
#include "led_onoff_states.h"
#include "util.h"
LOG_MODULE_REGISTER(board_led, LOG_LEVEL_ERR);
#define BOARD_LED_PWM_PERIOD_NS BOARD_LED_HZ_TO_PERIOD_NS(100)
static const struct board_led_pwm_dt_channel board_led_battery_red =
BOARD_LED_PWM_DT_CHANNEL_INITIALIZER(DT_NODELABEL(led_battery_red));
static const struct board_led_pwm_dt_channel board_led_battery_green =
BOARD_LED_PWM_DT_CHANNEL_INITIALIZER(DT_NODELABEL(led_battery_green));
static const struct board_led_pwm_dt_channel board_led_power_white =
BOARD_LED_PWM_DT_CHANNEL_INITIALIZER(DT_NODELABEL(led_power_white));
__override const int led_charge_lvl_1 = 5;
__override const int led_charge_lvl_2 = 97;
__override struct led_descriptor
led_bat_state_table[LED_NUM_STATES][LED_NUM_PHASES] = {
[STATE_CHARGING_LVL_1] = { { EC_LED_COLOR_RED,
LED_INDEFINITE } },
[STATE_CHARGING_LVL_2] = { { EC_LED_COLOR_AMBER,
LED_INDEFINITE } },
[STATE_CHARGING_FULL_CHARGE] = { { EC_LED_COLOR_GREEN,
LED_INDEFINITE } },
[STATE_DISCHARGE_S0] = { { LED_OFF, LED_INDEFINITE } },
[STATE_DISCHARGE_S0_BAT_LOW] = { { LED_OFF, LED_INDEFINITE } },
[STATE_DISCHARGE_S3] = { { LED_OFF, LED_INDEFINITE } },
[STATE_DISCHARGE_S5] = { { LED_OFF, LED_INDEFINITE } },
[STATE_BATTERY_ERROR] = { { EC_LED_COLOR_RED, 1 * LED_ONE_SEC },
{ LED_OFF, 1 * LED_ONE_SEC } },
[STATE_FACTORY_TEST] = { { EC_LED_COLOR_RED, 2 * LED_ONE_SEC },
{ EC_LED_COLOR_GREEN,
2 * LED_ONE_SEC } },
};
__override const struct led_descriptor
led_pwr_state_table[PWR_LED_NUM_STATES][LED_NUM_PHASES] = {
[PWR_LED_STATE_ON] = { { EC_LED_COLOR_WHITE, LED_INDEFINITE } },
[PWR_LED_STATE_SUSPEND_AC] = { { EC_LED_COLOR_WHITE,
3 * LED_ONE_SEC },
{ LED_OFF, 0.5 * LED_ONE_SEC } },
[PWR_LED_STATE_SUSPEND_NO_AC] = { { EC_LED_COLOR_WHITE,
3 * LED_ONE_SEC },
{ LED_OFF,
0.5 * LED_ONE_SEC } },
[PWR_LED_STATE_OFF] = { { LED_OFF, LED_INDEFINITE } },
};
const enum ec_led_id supported_led_ids[] = {
EC_LED_ID_BATTERY_LED,
EC_LED_ID_POWER_LED,
};
const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
static void board_led_pwm_set_duty(const struct board_led_pwm_dt_channel *ch,
int percent)
{
uint32_t pulse_ns;
int rv;
if (!device_is_ready(ch->dev)) {
LOG_ERR("PWM device %s not ready", ch->dev->name);
return;
}
pulse_ns = DIV_ROUND_NEAREST(BOARD_LED_PWM_PERIOD_NS * percent, 100);
LOG_DBG("Board LED PWM %s set percent (%d), pulse %d", ch->dev->name,
percent, pulse_ns);
rv = pwm_set(ch->dev, ch->channel, BOARD_LED_PWM_PERIOD_NS, pulse_ns,
ch->flags);
if (rv) {
LOG_ERR("pwm_set() failed %s (%d)", ch->dev->name, rv);
}
}
static bool device_is_clamshell(void)
{
int ret;
uint32_t val;
ret = cros_cbi_get_fw_config(FORM_FACTOR, &val);
if (ret != 0) {
LOG_ERR("Error retrieving CBI FW_CONFIG field %d", FORM_FACTOR);
return false;
}
return val == CLAMSHELL;
}
__override void led_set_color_battery(enum ec_led_colors color)
{
switch (color) {
case EC_LED_COLOR_RED:
board_led_pwm_set_duty(&board_led_battery_red, 100);
board_led_pwm_set_duty(&board_led_battery_green, 0);
break;
case EC_LED_COLOR_GREEN:
board_led_pwm_set_duty(&board_led_battery_red, 0);
board_led_pwm_set_duty(&board_led_battery_green, 100);
break;
case EC_LED_COLOR_AMBER:
board_led_pwm_set_duty(&board_led_battery_red, 100);
board_led_pwm_set_duty(&board_led_battery_green, 20);
break;
default: /* LED_OFF and other unsupported colors */
board_led_pwm_set_duty(&board_led_battery_red, 0);
board_led_pwm_set_duty(&board_led_battery_green, 0);
break;
}
}
__override void led_set_color_power(enum ec_led_colors color)
{
if (device_is_clamshell()) {
board_led_pwm_set_duty(&board_led_power_white, 0);
} else {
switch (color) {
case EC_LED_COLOR_WHITE:
board_led_pwm_set_duty(&board_led_power_white, 100);
break;
default:
board_led_pwm_set_duty(&board_led_power_white, 0);
break;
}
}
}
void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
{
if (led_id == EC_LED_ID_BATTERY_LED) {
brightness_range[EC_LED_COLOR_RED] = 1;
brightness_range[EC_LED_COLOR_GREEN] = 1;
brightness_range[EC_LED_COLOR_AMBER] = 1;
} else if (led_id == EC_LED_ID_POWER_LED) {
if (device_is_clamshell()) {
brightness_range[EC_LED_COLOR_WHITE] = 0;
} else {
brightness_range[EC_LED_COLOR_WHITE] = 1;
}
}
}
int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
{
if (led_id == EC_LED_ID_BATTERY_LED) {
if (brightness[EC_LED_COLOR_RED] != 0) {
led_set_color_battery(EC_LED_COLOR_RED);
} else if (brightness[EC_LED_COLOR_GREEN] != 0) {
led_set_color_battery(EC_LED_COLOR_GREEN);
} else if (brightness[EC_LED_COLOR_AMBER] != 0) {
led_set_color_battery(EC_LED_COLOR_AMBER);
} else {
led_set_color_battery(LED_OFF);
}
} else if (led_id == EC_LED_ID_POWER_LED) {
if (brightness[EC_LED_COLOR_WHITE] != 0) {
led_set_color_power(EC_LED_COLOR_WHITE);
} else {
led_set_color_power(LED_OFF);
}
}
return EC_SUCCESS;
}
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