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/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Battery LED control for Rambi
*/
#include "gpio.h"
#include "hooks.h"
#include "led_common.h"
#include "pwm.h"
#include "util.h"
const enum ec_led_id supported_led_ids[] = {EC_LED_ID_BATTERY_LED};
const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
{
brightness_range[EC_LED_COLOR_RED] = 100;
brightness_range[EC_LED_COLOR_GREEN] = 100;
}
int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
{
pwm_set_duty(PWM_CH_LED_RED, brightness[EC_LED_COLOR_RED]);
pwm_set_duty(PWM_CH_LED_GREEN, brightness[EC_LED_COLOR_GREEN]);
return EC_SUCCESS;
}
static void led_init(void)
{
/* Configure GPIOs */
gpio_config_module(MODULE_PWM_LED, 1);
/*
* Enable PWMs and set to 0% duty cycle. If they're disabled, the LM4
* seems to ground the pins instead of letting them float.
*/
pwm_enable(PWM_CH_LED_RED, 1);
pwm_set_duty(PWM_CH_LED_RED, 0);
pwm_enable(PWM_CH_LED_GREEN, 1);
pwm_set_duty(PWM_CH_LED_GREEN, 0);
}
DECLARE_HOOK(HOOK_INIT, led_init, HOOK_PRIO_DEFAULT);
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