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/* Copyright 2018 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.
*
* Battery LED control for Kukui board.
*/
#include "battery.h"
#include "charge_state.h"
#include "driver/charger/rt946x.h"
#include "hooks.h"
#include "led_common.h"
const enum ec_led_id supported_led_ids[] = { EC_LED_ID_BATTERY_LED };
const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
static enum charge_state prv_chstate = PWR_STATE_INIT;
#define LED_OFF MT6370_LED_ID_OFF
#define LED_RED MT6370_LED_ID1
#define LED_GREEN MT6370_LED_ID2
#define LED_BLUE MT6370_LED_ID3
#define LED_MASK_OFF 0
#define LED_MASK_RED MT6370_MASK_RGB_ISNK1DIM_EN
#define LED_MASK_GREEN MT6370_MASK_RGB_ISNK2DIM_EN
#define LED_MASK_BLUE MT6370_MASK_RGB_ISNK3DIM_EN
static void kukui_led_set_battery(void)
{
enum charge_state chstate;
static uint8_t prv_r, prv_g, prv_b;
uint8_t br[EC_LED_COLOR_COUNT] = { 0 };
chstate = charge_get_state();
if (prv_chstate == chstate &&
chstate != PWR_STATE_DISCHARGE)
return;
prv_chstate = chstate;
switch (chstate) {
case PWR_STATE_CHARGE:
/* RGB(current, duty) = (4mA,1/32)*/
br[EC_LED_COLOR_BLUE] = 1;
break;
case PWR_STATE_DISCHARGE:
/* display SoC 10% = real battery SoC 13%*/
if (charge_get_percent() <= 13)
br[EC_LED_COLOR_RED] = 1;
break;
case PWR_STATE_CHARGE_NEAR_FULL:
br[EC_LED_COLOR_GREEN] = 1;
break;
case PWR_STATE_ERROR:
br[EC_LED_COLOR_RED] = 1;
break;
default:
/* Other states don't alter LED behavior */
return;
}
if (prv_r == br[EC_LED_COLOR_RED] &&
prv_g == br[EC_LED_COLOR_GREEN] &&
prv_b == br[EC_LED_COLOR_BLUE])
return;
prv_r = br[EC_LED_COLOR_RED];
prv_g = br[EC_LED_COLOR_GREEN];
prv_b = br[EC_LED_COLOR_BLUE];
led_set_brightness(EC_LED_ID_BATTERY_LED, br);
}
void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
{
if (led_id != EC_LED_ID_BATTERY_LED)
return;
brightness_range[EC_LED_COLOR_RED] = MT6370_LED_BRIGHTNESS_MAX;
brightness_range[EC_LED_COLOR_GREEN] = MT6370_LED_BRIGHTNESS_MAX;
brightness_range[EC_LED_COLOR_BLUE] = MT6370_LED_BRIGHTNESS_MAX;
}
int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
{
uint8_t red, green, blue;
if (led_id != EC_LED_ID_BATTERY_LED)
return EC_ERROR_INVAL;
red = brightness[EC_LED_COLOR_RED];
green = brightness[EC_LED_COLOR_GREEN];
blue = brightness[EC_LED_COLOR_BLUE];
mt6370_led_set_brightness(LED_RED, red);
mt6370_led_set_brightness(LED_GREEN, green);
mt6370_led_set_brightness(LED_BLUE, blue);
/* Enables LED sink power if necessary. */
mt6370_led_set_color((red ? LED_MASK_RED : 0) |
(blue ? LED_MASK_BLUE : 0) |
(green ? LED_MASK_GREEN : 0));
return EC_SUCCESS;
}
/*
* Reset prv_chstate so that led can be updated immediately once
* auto-controlled.
*/
static void led_reset_auto_control(void)
{
prv_chstate = PWR_STATE_INIT;
}
static void krane_led_init(void)
{
const enum mt6370_led_dim_mode dim = MT6370_LED_DIM_MODE_PWM;
const enum mt6370_led_pwm_freq freq = MT6370_LED_PWM_FREQ1000;
mt6370_led_set_color(0);
mt6370_led_set_dim_mode(LED_RED, dim);
mt6370_led_set_dim_mode(LED_GREEN, dim);
mt6370_led_set_dim_mode(LED_BLUE, dim);
mt6370_led_set_pwm_frequency(LED_RED, freq);
mt6370_led_set_pwm_frequency(LED_GREEN, freq);
mt6370_led_set_pwm_frequency(LED_BLUE, freq);
mt6370_led_set_pwm_dim_duty(LED_RED, 0);
mt6370_led_set_pwm_dim_duty(LED_GREEN, 0);
mt6370_led_set_pwm_dim_duty(LED_BLUE, 0);
}
DECLARE_HOOK(HOOK_INIT, krane_led_init, HOOK_PRIO_DEFAULT);
/* Called by hook task every 1 sec */
static void led_second(void)
{
if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED))
kukui_led_set_battery();
else
led_reset_auto_control();
}
DECLARE_HOOK(HOOK_SECOND, led_second, HOOK_PRIO_DEFAULT);
__override void led_control(enum ec_led_id led_id, enum ec_led_state state)
{
uint8_t br[EC_LED_COLOR_COUNT] = { 0 };
if ((led_id != EC_LED_ID_RECOVERY_HW_REINIT_LED) &&
(led_id != EC_LED_ID_SYSRQ_DEBUG_LED))
return;
if (state == LED_STATE_RESET) {
led_reset_auto_control();
led_auto_control(EC_LED_ID_BATTERY_LED, 1);
return;
}
if (state)
br[EC_LED_COLOR_GREEN] = 1;
led_auto_control(EC_LED_ID_BATTERY_LED, 0);
led_set_brightness(EC_LED_ID_BATTERY_LED, br);
}
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