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d7dc9de8c9
BUG=chrome-os-partner:20984 BRANCH=falco TEST=Manual. Verify battery LED is amber when charging and white when charged. Change-Id: I98ba6e1839d5e07ad0c0422addc9708aadcce00f Signed-off-by: Dave Parker <dparker@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/62678 Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org>
99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
/* Copyright (c) 2013 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 for Falco.
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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 "extpower.h"
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#include "gpio.h"
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#include "hooks.h"
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enum led_color {
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LED_OFF = 0,
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LED_WHITE,
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LED_AMBER,
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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_LED0, 1);
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gpio_set_level(GPIO_BAT_LED1, 1);
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break;
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case LED_WHITE:
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gpio_set_level(GPIO_BAT_LED0, 1);
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gpio_set_level(GPIO_BAT_LED1, 0);
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break;
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case LED_AMBER:
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gpio_set_level(GPIO_BAT_LED0, 0);
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gpio_set_level(GPIO_BAT_LED1, 1);
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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_PWR_LED_L, 1);
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break;
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case LED_WHITE:
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gpio_set_level(GPIO_PWR_LED_L, 0);
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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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/* Called by hook task every 250mSec */
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static void led_tick(void)
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{
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static int ticks;
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uint32_t chflags = charge_get_flags();
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ticks++;
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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((ticks & 0x4) ? LED_WHITE : LED_OFF);
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/* Battery LED is solid white if AC connected, unless the battery is
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* is charging or there is an error. */
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bat_led_set_color(extpower_is_present() ? LED_WHITE : LED_OFF);
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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() <= BATTERY_LEVEL_LOW)
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bat_led_set_color((ticks & 0x4) ? LED_WHITE : LED_OFF);
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break;
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case PWR_STATE_ERROR:
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bat_led_set_color((ticks & 0x2) ? LED_WHITE : LED_OFF);
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break;
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case PWR_STATE_IDLE:
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if (chflags & CHARGE_FLAG_FORCE_IDLE)
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bat_led_set_color((ticks & 0x4) ? LED_AMBER : LED_OFF);
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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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DECLARE_HOOK(HOOK_TICK, led_tick, HOOK_PRIO_DEFAULT);
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