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2bb9aec01a
1. Provide led_control API that can be used by different drivers to control the state of LED (0=off, 1=on, 2=reset) 2. Add a new LED ID for recovery HW_REINIT indication. BUG=b:37682514 BRANCH=None TEST=make -j buildall Change-Id: I27334bde2b879046746456a610208f3fc2dd68b4 Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/487840 Reviewed-by: Aaron Durbin <adurbin@chromium.org>
87 lines
2.0 KiB
C
87 lines
2.0 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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* Common functions for blinking LEDs.
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*/
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#ifndef __CROS_EC_LED_COMMON_H
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#define __CROS_EC_LED_COMMON_H
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#include "ec_commands.h"
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/* Defined in led_<board>.c */
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extern const enum ec_led_id supported_led_ids[];
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/* Defined in led_<board>.c */
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extern const int supported_led_ids_count;
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/**
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* Enable or disable automatic control of an LED.
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*
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* @param led_id ID of LED to enable or disable automatic control.
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* @param enable 1 to enable . 0 to disable
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*
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*/
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void led_auto_control(enum ec_led_id led_id, int enable);
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/**
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* Whether an LED is under automatic control.
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*
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* @param led_id ID of LED to query.
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*
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* @returns 1 if LED is under automatic control. 0 if it is not.
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*
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*/
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int led_auto_control_is_enabled(enum ec_led_id led_id);
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/**
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* Query brightness per color channel for an LED.
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*
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* @param led_id ID of LED to query.
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* @param brightness_range Points to EC_LED_COLOR_COUNT element array
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* where current brightness will be stored.
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* Value per color channel:
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* 0 unsupported,
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* 1 on/off control,
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* 2 -> 255 max brightness under PWM control.
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*
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*/
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void led_get_brightness_range(enum ec_led_id, uint8_t *brightness_range);
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/**
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* Set brightness per color channel for an LED.
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*
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* @param led_id ID of LED to set.
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* @param brightness Brightness per color channel to set.
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*
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* @returns EC_SUCCESS or EC_ERROR_INVAL
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*
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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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* Enable LED.
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*
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* @param enable 1 to enable LED. 0 to disable.
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*
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*/
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void led_enable(int enable);
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enum ec_led_state {
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LED_STATE_OFF = 0,
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LED_STATE_ON = 1,
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LED_STATE_RESET = 2,
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};
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/**
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* Control state of LED.
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*
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* @param led_id ID of LED to control
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* @param state 0=off, 1=on, 2=reset to default
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*
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*/
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void led_control(enum ec_led_id id, enum ec_led_state state);
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#endif /* __CROS_EC_LED_COMMON_H */
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