164 lines
3.9 KiB
C
164 lines
3.9 KiB
C
/* Copyright 2018 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_manager.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 "system.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_RIGHT_LED,
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EC_LED_ID_LEFT_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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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 void side_led_set_color(int port, enum led_color color)
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{
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gpio_set_level(port ? GPIO_CHG_LED_Y_C1 : GPIO_CHG_LED_Y_C0,
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(color == LED_AMBER) ? BAT_LED_ON : BAT_LED_OFF);
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gpio_set_level(port ? GPIO_CHG_LED_W_C1 : GPIO_CHG_LED_W_C0,
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(color == LED_WHITE) ? BAT_LED_ON : BAT_LED_OFF);
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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_AMBER] = 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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int port;
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switch (led_id) {
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case EC_LED_ID_RIGHT_LED:
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port = 0;
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break;
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case EC_LED_ID_LEFT_LED:
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port = 1;
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break;
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default:
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return EC_ERROR_PARAM1;
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}
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if (brightness[EC_LED_COLOR_WHITE] != 0)
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side_led_set_color(port, LED_WHITE);
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else if (brightness[EC_LED_COLOR_AMBER] != 0)
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side_led_set_color(port, LED_AMBER);
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else
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side_led_set_color(port, LED_OFF);
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return EC_SUCCESS;
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}
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/*
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* Set active charge port color to the parameter, turn off all others.
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* If no port is active (-1), turn off all LEDs.
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*/
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static void set_active_port_color(enum led_color color)
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{
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int port = charge_manager_get_active_charge_port();
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if (led_auto_control_is_enabled(EC_LED_ID_RIGHT_LED))
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side_led_set_color(0, (port == 0) ? color : LED_OFF);
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if (led_auto_control_is_enabled(EC_LED_ID_LEFT_LED))
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side_led_set_color(1, (port == 1) ? color : LED_OFF);
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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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battery_ticks++;
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switch (charge_get_state()) {
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case PWR_STATE_CHARGE:
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/* Always indicate when charging, even in suspend. */
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set_active_port_color(LED_AMBER);
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break;
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case PWR_STATE_DISCHARGE:
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if (led_auto_control_is_enabled(EC_LED_ID_RIGHT_LED)) {
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if (charge_get_percent() <= 10)
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side_led_set_color(0,
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(battery_ticks & 0x4) ? LED_WHITE : LED_OFF);
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else
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side_led_set_color(0, LED_OFF);
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}
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if (led_auto_control_is_enabled(EC_LED_ID_LEFT_LED))
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side_led_set_color(1, LED_OFF);
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break;
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case PWR_STATE_ERROR:
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set_active_port_color((battery_ticks & 0x2) ?
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LED_WHITE : LED_OFF);
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break;
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case PWR_STATE_CHARGE_NEAR_FULL:
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set_active_port_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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set_active_port_color((battery_ticks & 0x4) ?
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LED_AMBER : LED_OFF);
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else
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set_active_port_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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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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void led_control(enum ec_led_id led_id, enum ec_led_state state)
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{
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enum led_color color;
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if ((led_id != EC_LED_ID_RECOVERY_HW_REINIT_LED) &&
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(led_id != EC_LED_ID_SYSRQ_DEBUG_LED))
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return;
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if (state == LED_STATE_RESET) {
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led_auto_control(EC_LED_ID_LEFT_LED, 1);
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led_auto_control(EC_LED_ID_RIGHT_LED, 1);
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board_led_set_battery();
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return;
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}
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color = state ? LED_WHITE : LED_OFF;
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led_auto_control(EC_LED_ID_LEFT_LED, 0);
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led_auto_control(EC_LED_ID_RIGHT_LED, 0);
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side_led_set_color(0, color);
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side_led_set_color(1, color);
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}
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