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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.
*
* Battery LED control for Katsu board.
*/
#include "battery.h"
#include "charge_state.h"
#include "driver/charger/rt946x.h"
#include "hooks.h"
#include "led_common.h"
#include "power.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);
#define LED_OFF MT6370_LED_ID_OFF
#define LED_AMBER MT6370_LED_ID1
#define LED_WHITE MT6370_LED_ID2
#define LED_MASK_OFF 0
#define LED_MASK_AMBER MT6370_MASK_RGB_ISNK1DIM_EN
#define LED_MASK_WHITE MT6370_MASK_RGB_ISNK2DIM_EN
static void katsu_led_set_battery(void)
{
enum charge_state chstate;
enum power_state powerstate;
static uint8_t prv_white, prv_amber;
static uint8_t time_cnt;
uint8_t br[EC_LED_COLOR_COUNT] = { 0 };
chstate = charge_get_state();
powerstate = power_get_state();
switch (chstate) {
case PWR_STATE_CHARGE:
case PWR_STATE_CHARGE_NEAR_FULL:
if (charge_get_percent() < 94) {
br[EC_LED_COLOR_AMBER] = 1;
br[EC_LED_COLOR_WHITE] = 0;
break;
}
br[EC_LED_COLOR_WHITE] = 1;
br[EC_LED_COLOR_AMBER] = 0;
break;
case PWR_STATE_DISCHARGE:
if (powerstate == POWER_S0) {
/* display SoC 10% = real battery SoC 13%*/
if (charge_get_percent() < 14) {
if (time_cnt < 1) {
time_cnt++;
br[EC_LED_COLOR_WHITE] = 0;
br[EC_LED_COLOR_AMBER] = 1;
} else {
time_cnt++;
br[EC_LED_COLOR_WHITE] = 0;
br[EC_LED_COLOR_AMBER] = 0;
if (time_cnt > 3)
time_cnt = 0;
}
break;
}
br[EC_LED_COLOR_WHITE] = 1;
br[EC_LED_COLOR_AMBER] = 0;
break;
} else if (powerstate == POWER_S3) {
if (time_cnt < 2) {
time_cnt++;
br[EC_LED_COLOR_WHITE] = 1;
br[EC_LED_COLOR_AMBER] = 0;
} else {
time_cnt++;
br[EC_LED_COLOR_WHITE] = 0;
br[EC_LED_COLOR_AMBER] = 0;
if (time_cnt > 3)
time_cnt = 0;
}
break;
} else if (powerstate == POWER_S5 || powerstate == POWER_G3) {
br[EC_LED_COLOR_WHITE] = 0;
br[EC_LED_COLOR_AMBER] = 0;
}
break;
case PWR_STATE_ERROR:
if (powerstate == POWER_S0) {
if (time_cnt < 1) {
time_cnt++;
br[EC_LED_COLOR_WHITE] = 0;
br[EC_LED_COLOR_AMBER] = 1;
} else {
time_cnt++;
br[EC_LED_COLOR_WHITE] = 0;
br[EC_LED_COLOR_AMBER] = 0;
if (time_cnt > 1)
time_cnt = 0;
}
break;
} else if (powerstate == POWER_S3) {
if (time_cnt < 2) {
time_cnt++;
br[EC_LED_COLOR_WHITE] = 1;
br[EC_LED_COLOR_AMBER] = 0;
} else {
time_cnt++;
br[EC_LED_COLOR_WHITE] = 0;
br[EC_LED_COLOR_AMBER] = 0;
if (time_cnt > 3)
time_cnt = 0;
}
break;
} else if (powerstate == POWER_S5 || powerstate == POWER_G3) {
br[EC_LED_COLOR_WHITE] = 0;
br[EC_LED_COLOR_AMBER] = 0;
}
break;
default:
/* Other states don't alter LED behavior */
return;
}
if (prv_white == br[EC_LED_COLOR_WHITE] &&
prv_amber == br[EC_LED_COLOR_AMBER])
return;
prv_white = br[EC_LED_COLOR_WHITE];
prv_amber = br[EC_LED_COLOR_AMBER];
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_WHITE] = MT6370_LED_BRIGHTNESS_MAX;
brightness_range[EC_LED_COLOR_AMBER] = MT6370_LED_BRIGHTNESS_MAX;
}
int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
{
uint8_t white, amber;
if (led_id != EC_LED_ID_BATTERY_LED)
return EC_ERROR_INVAL;
white = brightness[EC_LED_COLOR_WHITE];
amber = brightness[EC_LED_COLOR_AMBER];
mt6370_led_set_brightness(LED_WHITE, white);
mt6370_led_set_brightness(LED_AMBER, amber);
/* Enables LED sink power if necessary. */
mt6370_led_set_color((white ? LED_MASK_WHITE : 0) |
(amber ? LED_MASK_AMBER : 0));
return EC_SUCCESS;
}
static void katsu_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_WHITE, dim);
mt6370_led_set_dim_mode(LED_AMBER, dim);
mt6370_led_set_pwm_frequency(LED_WHITE, freq);
mt6370_led_set_pwm_frequency(LED_AMBER, freq);
mt6370_led_set_pwm_dim_duty(LED_WHITE, 255);
mt6370_led_set_pwm_dim_duty(LED_AMBER, 255);
}
DECLARE_HOOK(HOOK_INIT, katsu_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))
katsu_led_set_battery();
}
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_auto_control(EC_LED_ID_BATTERY_LED, 1);
return;
}
if (state)
br[EC_LED_COLOR_WHITE] = 1;
led_auto_control(EC_LED_ID_BATTERY_LED, 0);
led_set_brightness(EC_LED_ID_BATTERY_LED, br);
}
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