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/* Copyright 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.
*/
/* PWM control module for keyboard backlight. */
#include "common.h"
#include "keyboard_backlight.h"
#include "pwm.h"
#include "system.h"
#include "util.h"
const enum pwm_channel kblight_pwm_ch = PWM_CH_KBLIGHT;
static int kblight_pwm_set(int percent)
{
pwm_set_duty(kblight_pwm_ch, percent);
return EC_SUCCESS;
}
static int kblight_pwm_get(void)
{
return pwm_get_duty(kblight_pwm_ch);
}
static int kblight_pwm_init(void)
{
/* dnojiri: Why do we need save/restore setting over sysjump? */
kblight_pwm_set(0);
pwm_enable(kblight_pwm_ch, 0);
return EC_SUCCESS;
}
static int kblight_pwm_enable(int enable)
{
pwm_enable(kblight_pwm_ch, enable);
return EC_SUCCESS;
}
const struct kblight_drv kblight_pwm = {
.init = kblight_pwm_init,
.set = kblight_pwm_set,
.get = kblight_pwm_get,
.enable = kblight_pwm_enable,
};
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