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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.
*TODO(b:80160408): Implement mt6370 led driver.
*/
#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);
#define LED_OFF MT6370_LED_ID_OFF
#define LED_GREEN MT6370_LED_ID1
#define LED_RED MT6370_LED_ID2
#define LED_MASK_OFF 0
#define LED_MASK_GREEN MT6370_MASK_RGB_ISNK1DIM_EN
#define LED_MASK_RED MT6370_MASK_RGB_ISNK2DIM_EN
static void kukui_led_set_battery(void)
{
static int battery_second;
uint32_t chflags = charge_get_flags();
battery_second++;
switch (charge_get_state()) {
case PWR_STATE_CHARGE:
/* Always indicate when charging, even in suspend. */
mt6370_led_set_color(LED_MASK_RED);
break;
case PWR_STATE_DISCHARGE:
if (charge_get_percent() <= 10)
mt6370_led_set_color((battery_second & 0x4) ?
LED_MASK_RED : LED_MASK_OFF);
else
mt6370_led_set_color(LED_MASK_OFF);
break;
case PWR_STATE_ERROR:
mt6370_led_set_color((battery_second & 0x2) ?
LED_MASK_RED : LED_MASK_OFF);
break;
case PWR_STATE_CHARGE_NEAR_FULL:
mt6370_led_set_color(LED_MASK_GREEN);
break;
case PWR_STATE_IDLE: /* External power connected in IDLE. */
if (chflags & CHARGE_FLAG_FORCE_IDLE) {
mt6370_led_set_color(LED_MASK_RED);
mt6370_led_set_dim_mode(LED_RED,
MT6370_LED_DIM_MODE_BREATH);
} else {
mt6370_led_set_color(LED_MASK_GREEN);
mt6370_led_set_dim_mode(LED_GREEN,
MT6370_LED_DIM_MODE_BREATH);
}
break;
default:
/* Other states don't alter LED behavior */
break;
}
}
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_GREEN] = MT6370_LED_BRIGHTNESS_MAX;
brightness_range[EC_LED_COLOR_RED] = MT6370_LED_BRIGHTNESS_MAX;
}
int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
{
if (led_id != EC_LED_ID_BATTERY_LED)
return EC_ERROR_INVAL;
mt6370_led_set_brightness(LED_GREEN, brightness[EC_LED_COLOR_GREEN]);
mt6370_led_set_brightness(LED_RED, brightness[EC_LED_COLOR_RED]);
return EC_SUCCESS;
}
/* 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();
}
DECLARE_HOOK(HOOK_SECOND, led_second, HOOK_PRIO_DEFAULT);
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