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/* Copyright 2015 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 and Power LED control for Oak Board.
*/
#include "battery.h"
#include "charge_state.h"
#include "chipset.h"
#include "gpio.h"
#include "hooks.h"
#include "led_common.h"
#include "util.h"
#include "system.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);
enum led_color {
BAT_LED_GREEN = 0,
BAT_LED_ORANGE,
BAT_LED_RED,
BAT_LED_AMBER,
PWR_LED_GREEN,
PWR_LED_ORANGE,
LED_COLOR_COUNT /* Number of colors, not a color itself */
};
static int bat_led_set(enum led_color color, int on)
{
/* Before Rev5, it's active low; After that, it's active high */
if (system_get_board_version() < OAK_REV5)
on = !on;
switch (color) {
case BAT_LED_GREEN:
gpio_set_level(GPIO_BAT_LED0, on); /* BAT_LED_GREEN */
break;
case BAT_LED_ORANGE:
/* for rev2 or before */
gpio_set_level(GPIO_BAT_LED1, on); /* BAT_LED_ORANGE */
break;
case BAT_LED_RED:
/* for rev3 or later */
gpio_set_level(GPIO_BAT_LED1, on); /* BAT_LED_RED */
break;
case BAT_LED_AMBER:
/* for rev3 or later */
gpio_set_level(GPIO_BAT_LED0, on); /* BAT_LED_AMBER */
gpio_set_level(GPIO_BAT_LED1, on);
break;
case PWR_LED_GREEN:
gpio_set_level(GPIO_PWR_LED0, on); /* PWR_LED_GREEN */
break;
case PWR_LED_ORANGE:
gpio_set_level(GPIO_PWR_LED1, on); /* PWR_LED_ORANGE */
break;
default:
return EC_ERROR_UNKNOWN;
}
return EC_SUCCESS;
}
void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
{
/* Ignoring led_id as both leds support the same colors */
brightness_range[EC_LED_COLOR_RED] = 1;
brightness_range[EC_LED_COLOR_GREEN] = 1;
brightness_range[EC_LED_COLOR_YELLOW] = 1;
}
int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
{
if (EC_LED_ID_BATTERY_LED == led_id) {
if (brightness[EC_LED_COLOR_GREEN] != 0) {
bat_led_set(BAT_LED_GREEN, 1);
bat_led_set(BAT_LED_ORANGE, 0);
} else if (brightness[EC_LED_COLOR_YELLOW] != 0) {
bat_led_set(BAT_LED_GREEN, 1);
bat_led_set(BAT_LED_ORANGE, 1);
} else if (brightness[EC_LED_COLOR_RED] != 0) {
bat_led_set(BAT_LED_GREEN, 0);
bat_led_set(BAT_LED_RED, 1);
} else {
bat_led_set(BAT_LED_GREEN, 0);
bat_led_set(BAT_LED_ORANGE, 0);
}
return EC_SUCCESS;
} else if (EC_LED_ID_POWER_LED == led_id) {
if (brightness[EC_LED_COLOR_GREEN] != 0) {
bat_led_set(PWR_LED_GREEN, 1);
bat_led_set(PWR_LED_ORANGE, 0);
} else if (brightness[EC_LED_COLOR_YELLOW] != 0) {
bat_led_set(PWR_LED_GREEN, 1);
bat_led_set(PWR_LED_ORANGE, 1);
} else {
bat_led_set(PWR_LED_GREEN, 0);
bat_led_set(PWR_LED_ORANGE, 0);
}
return EC_SUCCESS;
} else {
return EC_ERROR_UNKNOWN;
}
}
static void oak_led_set_power(int board_version)
{
static int power_second;
power_second++;
switch(board_version) {
case OAK_REV3:
case OAK_REV4:
/*
* For Rev3 and Rev4 revision.
* PWR LED behavior:
* Power on: Green ON
* Suspend: Orange in breeze mode ( 1 sec on/ 3 sec off)
* Power off: OFF
*/
if (chipset_in_state(CHIPSET_STATE_ANY_OFF)) {
bat_led_set(PWR_LED_GREEN, 0);
bat_led_set(PWR_LED_ORANGE, 0);
} else if (chipset_in_state(CHIPSET_STATE_ON)) {
bat_led_set(PWR_LED_GREEN, 1);
bat_led_set(PWR_LED_ORANGE, 0);
} else if (chipset_in_state(CHIPSET_STATE_SUSPEND)) {
bat_led_set(PWR_LED_GREEN, 0);
bat_led_set(PWR_LED_ORANGE,
(power_second & 3) ? 0 : 1);
}
break;
default:
break;
}
}
static void oak_led_set_battery(int board_version)
{
static int battery_second;
battery_second++;
switch(board_version) {
case OAK_REV3:
case OAK_REV4:
/*
* For Rev3 and Rev4 revision:
* BAT LED behavior:
* - Fully charged / idle: Green ON
* - Charging: Amber ON (BAT_LED_RED && BAT_LED_GREEN)
* - Battery discharging capacity<10%, red blink
* - Battery error: Red ON
*/
switch (charge_get_state()) {
case PWR_STATE_CHARGE:
bat_led_set(BAT_LED_AMBER, 1);
break;
case PWR_STATE_CHARGE_NEAR_FULL:
bat_led_set(BAT_LED_GREEN, 1);
bat_led_set(BAT_LED_RED, 0);
break;
case PWR_STATE_DISCHARGE:
bat_led_set(BAT_LED_GREEN, 0);
if (charge_get_percent() < 3)
bat_led_set(BAT_LED_RED,
(battery_second & 1) ? 0 : 1);
else if (charge_get_percent() < 10)
bat_led_set(BAT_LED_RED,
(battery_second & 3) ? 0 : 1);
else
bat_led_set(BAT_LED_RED, 0);
break;
case PWR_STATE_ERROR:
bat_led_set(BAT_LED_RED, 1);
break;
case PWR_STATE_IDLE: /* Ext. power connected in IDLE. */
bat_led_set(BAT_LED_GREEN, 1);
bat_led_set(BAT_LED_RED, 0);
break;
default:
/* Other states don't alter LED behavior */
break;
}
break; /* End of case OAK_REV3 & OAK_REV4 */
default:
/*
* Put power control here since we are using the "battery" LED.
* This allows LED autocontrol to be turned off by cmd during factory test.
*
* PWR LED behavior:
* Power on: Green
* Suspend: Green in breeze mode ( 1 sec on/ 3 sec off)
* Power off: OFF
*/
if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
bat_led_set(BAT_LED_GREEN, 0);
else if (chipset_in_state(CHIPSET_STATE_ON))
bat_led_set(BAT_LED_GREEN, 1);
else if (chipset_in_state(CHIPSET_STATE_SUSPEND)) {
int cycle_time = 4;
/* Oak rev5 with GlaDOS ID has a extremely power
* comsuming LED. Increase LED blink cycle time to reduce
* S3 power comsuption. */
if (board_version >= OAK_REV5)
cycle_time = 10;
bat_led_set(BAT_LED_GREEN,
(battery_second % cycle_time) ? 0 : 1);
}
/* BAT LED behavior:
* Fully charged / idle: Off
* Under charging: Orange
* Bat. low (10%): Orange in breeze mode (1s on, 3s off)
* Bat. critical low (less than 3%) or abnormal battery
* situation: Orange in blinking mode (1s on, 1s off)
* Using battery or not connected to AC power: OFF
*/
switch (charge_get_state()) {
case PWR_STATE_CHARGE:
bat_led_set(BAT_LED_ORANGE, 1);
break;
case PWR_STATE_CHARGE_NEAR_FULL:
bat_led_set(BAT_LED_ORANGE, 1);
break;
case PWR_STATE_DISCHARGE:
if (charge_get_percent() < 3)
bat_led_set(BAT_LED_ORANGE,
(battery_second & 1) ? 0 : 1);
else if (charge_get_percent() < 10)
bat_led_set(BAT_LED_ORANGE,
(battery_second & 3) ? 0 : 1);
else
bat_led_set(BAT_LED_ORANGE, 0);
break;
case PWR_STATE_ERROR:
bat_led_set(BAT_LED_ORANGE,
(battery_second & 1) ? 0 : 1);
break;
case PWR_STATE_IDLE: /* Ext. power connected in IDLE. */
bat_led_set(BAT_LED_ORANGE, 0);
break;
default:
/* Other states don't alter LED behavior */
break;
}
break; /* End of default */
}
}
/**
* Called by hook task every 1 sec
*/
static void led_second(void)
{
if (led_auto_control_is_enabled(EC_LED_ID_POWER_LED))
oak_led_set_power(system_get_board_version());
if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED))
oak_led_set_battery(system_get_board_version());
}
DECLARE_HOOK(HOOK_SECOND, led_second, HOOK_PRIO_DEFAULT);
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