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Standard Power/Charging LED Behavior
Assuming the dut has red/green battery led and a single power led CONFIG_LED_POLICY_STD implements the chromeos spec: * power led on in S0 * power led off in S5 * power led pulsing in S3 * battery led amber when charging * battery led green when fully charged with AC * battery led off when discharging * battery led pulsing red when battery error BUG=chrome-os-partner:35355 TEST=The Charging led behavior should match the cros spec BRANCH=None Change-Id: I645a939ecc2d44d73d2f52b295f9c7e8c923f77b Signed-off-by: Alexandru M Stan <amstan@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/240705 Reviewed-by: Randall Spangler <rspangler@chromium.org>
This commit is contained in:
Alexandru M Stan
committed by
ChromeOS Commit Bot
ChromeOS Commit Bot
parent
b34b4beef9
commit
35b13dc19a
@@ -55,6 +55,7 @@ common-$(CONFIG_KEYBOARD_PROTOCOL_8042)+=keyboard_8042.o
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common-$(CONFIG_KEYBOARD_PROTOCOL_MKBP)+=keyboard_mkbp.o
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common-$(CONFIG_KEYBOARD_TEST)+=keyboard_test.o
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common-$(CONFIG_LED_COMMON)+=led_common.o
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common-$(CONFIG_LED_POLICY_STD)+=led_policy_std.o
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common-$(CONFIG_LID_ANGLE)+=motion_lid.o
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common-$(CONFIG_LID_ANGLE_KEY_SCAN)+=lid_angle.o
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common-$(CONFIG_LID_SWITCH)+=lid_switch.o
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185
common/led_policy_std.c
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185
common/led_policy_std.c
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@@ -0,0 +1,185 @@
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/* Copyright (c) 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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* Standard Battery LED and Power LED control
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* This assumes a red/green battery led and a single power led.
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*/
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#include "gpio.h"
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#include "hooks.h"
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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 "led_common.h"
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#include "util.h"
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#include "lid_switch.h"
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#ifdef CONFIG_LED_BAT_ACTIVE_LOW
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#define BAT_LED_ON 0
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#define BAT_LED_OFF 1
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#else
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#define BAT_LED_ON 1
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#define BAT_LED_OFF 0
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#endif
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#ifdef CONFIG_LED_POWER_ACTIVE_LOW
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#define POWER_LED_ON 0
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#define POWER_LED_OFF 1
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#else
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#define POWER_LED_ON 1
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#define POWER_LED_OFF 0
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#endif
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const enum ec_led_id supported_led_ids[] = {
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EC_LED_ID_BATTERY_LED, EC_LED_ID_POWER_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_RED,
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LED_AMBER,
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LED_GREEN,
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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_GREEN, BAT_LED_OFF);
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gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_OFF);
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break;
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case LED_RED:
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gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_OFF);
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gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_ON);
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break;
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case LED_AMBER:
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gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_ON);
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gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_ON);
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break;
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case LED_GREEN:
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gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_ON);
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gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_OFF);
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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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static int pwr_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_POWER_LED, POWER_LED_OFF);
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break;
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case LED_WHITE:
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gpio_set_level(GPIO_POWER_LED,
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lid_is_open() ? POWER_LED_ON : POWER_LED_OFF);
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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_BLUE] = 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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switch (led_id) {
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case EC_LED_ID_BATTERY_LED:
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gpio_set_level(GPIO_BAT_LED_RED,
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(brightness[EC_LED_COLOR_RED] != 0) ?
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BAT_LED_ON : BAT_LED_OFF);
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gpio_set_level(GPIO_BAT_LED_GREEN,
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(brightness[EC_LED_COLOR_GREEN] != 0) ?
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BAT_LED_ON : BAT_LED_OFF);
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break;
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case EC_LED_ID_POWER_LED:
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gpio_set_level(GPIO_POWER_LED,
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(brightness[EC_LED_COLOR_WHITE] != 0) ?
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POWER_LED_ON : POWER_LED_OFF);
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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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static void std_led_set_power(void)
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{
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static int power_second;
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power_second++;
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if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
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pwr_led_set_color(LED_OFF);
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else if (chipset_in_state(CHIPSET_STATE_ON))
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pwr_led_set_color(LED_WHITE);
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else if (chipset_in_state(CHIPSET_STATE_SUSPEND))
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pwr_led_set_color((power_second & 3) ? LED_OFF : LED_WHITE);
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}
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static void std_led_set_battery(void)
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{
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static int battery_second;
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uint32_t chflags = charge_get_flags();
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battery_second++;
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/* BAT LED behavior:
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* Same as the chromeos spec
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* Green/Amber for CHARGE_FLAG_FORCE_IDLE
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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_color(LED_AMBER);
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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_color((battery_second & 1)
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? LED_OFF : LED_AMBER);
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else if (charge_get_percent() < 10)
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bat_led_set_color((battery_second & 3)
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? LED_OFF : 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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case PWR_STATE_ERROR:
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bat_led_set_color((battery_second & 1) ? LED_OFF : LED_RED);
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break;
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case PWR_STATE_CHARGE_NEAR_FULL:
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bat_led_set_color(LED_GREEN);
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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_second & 0x2) ? LED_GREEN : LED_AMBER);
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else
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bat_led_set_color(LED_GREEN);
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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 1 sec */
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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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std_led_set_power();
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if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED))
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std_led_set_battery();
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}
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DECLARE_HOOK(HOOK_SECOND, led_second, HOOK_PRIO_DEFAULT);
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@@ -800,6 +800,18 @@
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/* Support common LED interface */
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#undef CONFIG_LED_COMMON
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/* Standard LED behavior according to spec given that we have a red-green
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* bicolor led for charging and one power led
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*/
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#undef CONFIG_LED_POLICY_STD
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/*
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* LEDs for LED_POLICY STD may be inverted. In this case they are active low
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* and the GPIO names will be GPIO_LED..._L.
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*/
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#undef CONFIG_LED_BAT_ACTIVE_LOW
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#undef CONFIG_LED_POWER_ACTIVE_LOW
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/* Support for LED driver chip(s) */
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#undef CONFIG_LED_DRIVER_DS2413 /* Maxim DS2413, on one-wire interface */
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#undef CONFIG_LED_DRIVER_LP5562 /* LP5562, on I2C interface */
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