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/* Copyright 2020 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Power and battery LED control for Asurada
*/
#include "charge_manager.h"
#include "charge_state.h"
#include "common.h"
#include "console.h"
#include "driver/bc12/mt6360.h"
#include "hooks.h"
#include "led_common.h"
#include "pwm.h"
#include "stdbool.h"
#include "util.h"
#define CPRINTS(format, args...) cprints(CC_PWM, format, ## args)
#define LED_OFF EC_LED_COLOR_COUNT
const enum ec_led_id supported_led_ids[] = {
/* Main LED */
EC_LED_ID_LEFT_LED,
EC_LED_ID_RIGHT_LED,
/* Not used, give them some random name for testing */
EC_LED_ID_POWER_LED,
EC_LED_ID_BATTERY_LED
};
const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
static void led_set_color_left(enum ec_led_colors color, int duty)
{
mt6360_led_set_brightness(MT6360_LED_RGB2, duty);
mt6360_led_set_brightness(MT6360_LED_RGB3, duty);
switch (color) {
case EC_LED_COLOR_AMBER:
mt6360_led_enable(MT6360_LED_RGB2, 0);
mt6360_led_enable(MT6360_LED_RGB3, 1);
break;
case EC_LED_COLOR_WHITE:
mt6360_led_enable(MT6360_LED_RGB2, 1);
mt6360_led_enable(MT6360_LED_RGB3, 0);
break;
default: /* LED_OFF and other unsupported colors */
mt6360_led_enable(MT6360_LED_RGB2, 0);
mt6360_led_enable(MT6360_LED_RGB3, 0);
break;
}
}
static void led_set_color_right(enum ec_led_colors color, int duty)
{
pwm_set_duty(PWM_CH_LED2, duty);
pwm_set_duty(PWM_CH_LED3, duty);
switch (color) {
case EC_LED_COLOR_AMBER:
pwm_enable(PWM_CH_LED2, 0);
pwm_enable(PWM_CH_LED3, 1);
break;
case EC_LED_COLOR_WHITE:
pwm_enable(PWM_CH_LED2, 1);
pwm_enable(PWM_CH_LED3, 0);
break;
default: /* LED_OFF and other unsupported colors */
pwm_enable(PWM_CH_LED2, 0);
pwm_enable(PWM_CH_LED3, 0);
break;
}
}
static void led_set_color_power(enum ec_led_colors color, int duty)
{
pwm_set_duty(PWM_CH_LED1, duty);
pwm_enable(PWM_CH_LED1, color == EC_LED_COLOR_WHITE);
}
static void led_set_color_battery(enum ec_led_colors color, int duty)
{
mt6360_led_set_brightness(MT6360_LED_RGB1, duty);
mt6360_led_enable(MT6360_LED_RGB1, color == EC_LED_COLOR_WHITE);
}
static enum ec_error_list set_color(enum ec_led_id led_id,
enum ec_led_colors color,
int duty)
{
switch (led_id) {
case EC_LED_ID_LEFT_LED:
led_set_color_left(color, duty);
return EC_SUCCESS;
case EC_LED_ID_RIGHT_LED:
led_set_color_right(color, duty);
return EC_SUCCESS;
case EC_LED_ID_POWER_LED:
led_set_color_power(color, duty);
return EC_SUCCESS;
case EC_LED_ID_BATTERY_LED:
led_set_color_battery(color, duty);
return EC_SUCCESS;
default:
return EC_ERROR_INVAL;
}
}
void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
{
switch (led_id) {
case EC_LED_ID_LEFT_LED:
brightness_range[EC_LED_COLOR_AMBER] =
MT6360_LED_BRIGHTNESS_MAX;
brightness_range[EC_LED_COLOR_WHITE] =
MT6360_LED_BRIGHTNESS_MAX;
break;
case EC_LED_ID_RIGHT_LED:
brightness_range[EC_LED_COLOR_AMBER] = 100;
brightness_range[EC_LED_COLOR_WHITE] = 100;
break;
case EC_LED_ID_POWER_LED:
brightness_range[EC_LED_COLOR_WHITE] = 100;
break;
case EC_LED_ID_BATTERY_LED:
brightness_range[EC_LED_COLOR_WHITE] =
MT6360_LED_BRIGHTNESS_MAX;
break;
default:
break;
}
}
int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
{
if (brightness[EC_LED_COLOR_AMBER])
return set_color(led_id, EC_LED_COLOR_AMBER,
brightness[EC_LED_COLOR_AMBER]);
if (brightness[EC_LED_COLOR_WHITE])
return set_color(led_id, EC_LED_COLOR_WHITE,
brightness[EC_LED_COLOR_WHITE]);
return set_color(led_id, LED_OFF, 0);
}
static void update_led(enum ec_led_id led_id, bool is_active_charge_port,
int duty, int tick)
{
enum charge_state power_state = charge_get_state();
if (power_state == PWR_STATE_IDLE) {
/* Factory mode: blinking white (2sec on + 2sec off) */
set_color(led_id, (tick % 8 < 4) ? EC_LED_COLOR_WHITE : LED_OFF,
duty);
} else if (power_state == PWR_STATE_ERROR) {
/* Battery error: blinking amber (1sec on + 1sec off) */
set_color(led_id, (tick % 4 < 2) ? EC_LED_COLOR_AMBER : LED_OFF,
duty);
} else if (is_active_charge_port) {
/*
* Active charge port: amber when charging, white if fully
* charged.
*/
if (power_state == PWR_STATE_CHARGE)
set_color(led_id, EC_LED_COLOR_AMBER, duty);
else
set_color(led_id, EC_LED_COLOR_WHITE, duty);
} else {
/*
* Non-active port:
* Solid white in S0, blinking amber (3sec on + 1sec off) in S3,
* and LED off in S5
*/
if (chipset_in_state(CHIPSET_STATE_ON))
set_color(led_id, EC_LED_COLOR_WHITE, duty);
else if (chipset_in_state(CHIPSET_STATE_ANY_SUSPEND))
set_color(
led_id,
(tick % 8 < 6) ? EC_LED_COLOR_AMBER : LED_OFF,
duty);
else
set_color(led_id, LED_OFF, 0);
}
}
static void led_tick(void)
{
static int tick;
int port = charge_manager_get_active_charge_port();
++tick;
/* Pick duty 1 and 50 respectively to have same brightness */
if (led_auto_control_is_enabled(EC_LED_ID_LEFT_LED))
update_led(EC_LED_ID_LEFT_LED, port == 0, 1, tick);
if (led_auto_control_is_enabled(EC_LED_ID_RIGHT_LED))
update_led(EC_LED_ID_RIGHT_LED, port == 1, 50, tick);
/* Turn off unused LEDs */
if (led_auto_control_is_enabled(EC_LED_ID_POWER_LED))
set_color(EC_LED_ID_POWER_LED, LED_OFF, 0);
if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED))
set_color(EC_LED_ID_BATTERY_LED, LED_OFF, 0);
}
DECLARE_HOOK(HOOK_TICK, led_tick, HOOK_PRIO_DEFAULT);
DECLARE_HOOK(HOOK_INIT, led_tick, HOOK_PRIO_DEFAULT);
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