154 lines
3.5 KiB
C
154 lines
3.5 KiB
C
/* 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.
|
|
*
|
|
* LED control for Careena
|
|
*/
|
|
|
|
#include "battery.h"
|
|
#include "charge_state.h"
|
|
#include "chipset.h"
|
|
#include "ec_commands.h"
|
|
#include "extpower.h"
|
|
#include "gpio.h"
|
|
#include "hooks.h"
|
|
#include "host_command.h"
|
|
#include "led_common.h"
|
|
#include "util.h"
|
|
#include "system.h"
|
|
|
|
#define BAT_LED_ON 0
|
|
#define BAT_LED_OFF 1
|
|
|
|
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 {
|
|
LED_OFF = 0,
|
|
LED_AMBER,
|
|
LED_WHITE,
|
|
LED_COLOR_COUNT /* Number of colors, not a color itself */
|
|
};
|
|
|
|
static int led_set_color_battery(enum led_color color)
|
|
{
|
|
switch (color) {
|
|
case LED_OFF:
|
|
gpio_set_level(GPIO_BAT_LED_WHITE_L, BAT_LED_OFF);
|
|
gpio_set_level(GPIO_BAT_LED_AMBER_L, BAT_LED_OFF);
|
|
break;
|
|
case LED_WHITE:
|
|
gpio_set_level(GPIO_BAT_LED_WHITE_L, BAT_LED_ON);
|
|
gpio_set_level(GPIO_BAT_LED_AMBER_L, BAT_LED_OFF);
|
|
break;
|
|
case LED_AMBER:
|
|
gpio_set_level(GPIO_BAT_LED_WHITE_L, BAT_LED_OFF);
|
|
gpio_set_level(GPIO_BAT_LED_AMBER_L, BAT_LED_ON);
|
|
break;
|
|
default:
|
|
return EC_ERROR_UNKNOWN;
|
|
}
|
|
return EC_SUCCESS;
|
|
}
|
|
|
|
void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
|
|
{
|
|
brightness_range[EC_LED_COLOR_WHITE] = 1;
|
|
brightness_range[EC_LED_COLOR_AMBER] = 1;
|
|
}
|
|
|
|
static int led_set_color(enum ec_led_id led_id, enum led_color color)
|
|
{
|
|
int rv;
|
|
|
|
switch (led_id) {
|
|
case EC_LED_ID_BATTERY_LED:
|
|
rv = led_set_color_battery(color);
|
|
break;
|
|
default:
|
|
return EC_ERROR_UNKNOWN;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
|
|
{
|
|
if (brightness[EC_LED_COLOR_WHITE] != 0)
|
|
led_set_color(led_id, LED_WHITE);
|
|
else if (brightness[EC_LED_COLOR_AMBER] != 0)
|
|
led_set_color(led_id, LED_AMBER);
|
|
else
|
|
led_set_color(led_id, LED_OFF);
|
|
|
|
return EC_SUCCESS;
|
|
}
|
|
|
|
static void led_set_battery(void)
|
|
{
|
|
static int battery_ticks;
|
|
static int power_ticks;
|
|
uint32_t chflags = charge_get_flags();
|
|
|
|
battery_ticks++;
|
|
|
|
/* override battery led for system suspend */
|
|
if (chipset_in_state(CHIPSET_STATE_SUSPEND |
|
|
CHIPSET_STATE_STANDBY) &&
|
|
charge_get_state() != PWR_STATE_CHARGE) {
|
|
led_set_color_battery(power_ticks++ & 0x4 ?
|
|
LED_WHITE : LED_OFF);
|
|
return;
|
|
}
|
|
|
|
power_ticks = 0;
|
|
|
|
switch (charge_get_state()) {
|
|
case PWR_STATE_CHARGE:
|
|
led_set_color_battery(LED_AMBER);
|
|
break;
|
|
case PWR_STATE_DISCHARGE_FULL:
|
|
if (extpower_is_present()) {
|
|
led_set_color_battery(LED_WHITE);
|
|
break;
|
|
}
|
|
/* Intentional fall-through */
|
|
case PWR_STATE_DISCHARGE:
|
|
/*
|
|
* Blink white light (1 sec on, 1 sec off)
|
|
* when battery capacity is less than 10%
|
|
*/
|
|
if (charge_get_percent() < 10)
|
|
led_set_color_battery(
|
|
(battery_ticks & 0x4) ? LED_WHITE : LED_OFF);
|
|
else
|
|
led_set_color_battery(LED_OFF);
|
|
break;
|
|
case PWR_STATE_ERROR:
|
|
led_set_color_battery(
|
|
(battery_ticks & 0x2) ? LED_WHITE : LED_OFF);
|
|
break;
|
|
case PWR_STATE_CHARGE_NEAR_FULL:
|
|
led_set_color_battery(LED_WHITE);
|
|
break;
|
|
case PWR_STATE_IDLE: /* External power connected in IDLE */
|
|
if (chflags & CHARGE_FLAG_FORCE_IDLE)
|
|
led_set_color_battery(
|
|
(battery_ticks & 0x4) ? LED_AMBER : LED_OFF);
|
|
else
|
|
led_set_color_battery(LED_WHITE);
|
|
break;
|
|
default:
|
|
/* Other states don't alter LED behavior */
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Called by hook task every TICK */
|
|
static void led_tick(void)
|
|
{
|
|
if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED))
|
|
led_set_battery();
|
|
}
|
|
DECLARE_HOOK(HOOK_TICK, led_tick, HOOK_PRIO_DEFAULT);
|