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