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126a303c69
There are two different types of suspend states that are supported on x86 platforms -- S3 and S0ix. When AP enters S3, the chipset state is identified as CHIPSET_STATE_SUSPEND. On the other hand, when AP enters S0ix, the chipset state is identified as CHIPSET_STATE_STANDBY. There are several components within the EC e.g. charger state machine, usb pd task, motion sense task that take actions based on the chipset suspend state (and checked only for CHIPSET_STATE_SUSPEND until now). In order to ensure that different EC components do not have to worry about checking for all the different types of suspend states that are supported, introduce a new combination CHIPSET_STATE_ANY_SUSPEND which is a combination of CHIPSET_STATE_SUSPEND(S3) and CHIPSET_STATE_STANDBY(S0ix). BUG=b:69690699 BRANCH=None TEST=make -j buildall. Ruben verified that with this change, EC power consumption in S0ix drops from 7.85mW to 6.59mW on Soraka. Change-Id: I599a0ea2fe2f39132764a6068fa77c3aea02affa Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/786919 Reviewed-by: Aaron Durbin <adurbin@chromium.org>
146 lines
3.4 KiB
C
146 lines
3.4 KiB
C
/* 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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* Power and battery LED control.
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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 "ec_commands.h"
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#include "gpio.h"
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#include "hooks.h"
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#include "host_command.h"
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#include "led_common.h"
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#include "util.h"
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#define BAT_LED_ON 1
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#define BAT_LED_OFF 0
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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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const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
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enum led_color {
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LED_OFF = 0,
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LED_AMBER,
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LED_WHITE,
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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_color(enum led_color color)
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{
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switch (color) {
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case LED_OFF:
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gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_OFF);
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gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_OFF);
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break;
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case LED_AMBER:
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gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_ON);
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gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_OFF);
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break;
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case LED_WHITE:
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gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_OFF);
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gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_ON);
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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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brightness_range[EC_LED_COLOR_YELLOW] = 1;
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brightness_range[EC_LED_COLOR_WHITE] = 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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switch (led_id) {
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case EC_LED_ID_BATTERY_LED:
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if (brightness[EC_LED_COLOR_WHITE] != 0)
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bat_led_set_color(LED_WHITE);
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else if (brightness[EC_LED_COLOR_YELLOW] != 0)
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bat_led_set_color(LED_AMBER);
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else
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bat_led_set_color(LED_OFF);
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break;
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default:
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break;
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}
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return EC_SUCCESS;
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}
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static void board_led_set_battery(void)
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{
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static int battery_ticks;
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uint32_t chflags = charge_get_flags();
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static int power_ticks;
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static int previous_state_suspend;
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battery_ticks++;
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power_ticks++;
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if (chipset_in_state(CHIPSET_STATE_ANY_SUSPEND)) {
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/*
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* Reset ticks if entering suspend so LED turns white
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* as soon as possible.
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*/
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if (!previous_state_suspend)
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power_ticks = 0;
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if (charge_get_state() == PWR_STATE_CHARGE)
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/* Always indicate when charging, even in suspend. */
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bat_led_set_color(LED_AMBER);
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else
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/* Blink once every one second. */
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bat_led_set_color((power_ticks & 0x4) ?
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LED_WHITE : LED_OFF);
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previous_state_suspend = 1;
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return;
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}
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previous_state_suspend = 0;
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switch (charge_get_state()) {
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case PWR_STATE_CHARGE:
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bat_led_set_color(LED_AMBER);
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break;
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case PWR_STATE_DISCHARGE:
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if (charge_get_percent() < 12)
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bat_led_set_color(
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(battery_ticks & 0x4) ? LED_WHITE : LED_OFF);
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else
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bat_led_set_color(LED_OFF);
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break;
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case PWR_STATE_ERROR:
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bat_led_set_color((battery_ticks & 0x2) ? LED_WHITE : LED_OFF);
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break;
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case PWR_STATE_CHARGE_NEAR_FULL:
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bat_led_set_color(LED_WHITE);
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break;
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case PWR_STATE_IDLE: /* External power connected in IDLE */
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if (chflags & CHARGE_FLAG_FORCE_IDLE)
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bat_led_set_color(
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(battery_ticks & 0x4) ? LED_AMBER : LED_OFF);
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else
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bat_led_set_color(LED_WHITE);
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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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}
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/* Called by hook task every TICK */
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static void led_tick(void)
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{
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if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED))
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board_led_set_battery();
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}
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DECLARE_HOOK(HOOK_TICK, led_tick, HOOK_PRIO_DEFAULT);
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