/*
 * Copyright (C) 2008 Shanghai awinic technology co.,ltd. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS
 * IN THE SOFTWARE.
 */

Awinic. AW2016 LED

AW2016 LED device supports 3 LED channels and the driver
register each channel as a single LED class device and
exports interfaces to update brightness, set timer trigger
and enable HW based blink functionalities.

- compatible
  Usage: required
  Value type: <string>
  Definition: Must be "awinic,aw2016_led"

- reg
  Usage: required
  Value type: <u32>
  Definition: The 7-bit I2C address for AW2016 chip.

Properties for child properties:
- awinic,name
  Usage: required
  Value type: <string>
  Definition: Name of the LED which will be register as the LED class
	device name.

- awinic,id
  Usage: required
  Value type: <u32>
  Definition: It represents the LED hardware channel index. The valid
	values are: 0, 1, 2.

- awinic,imax
  Usage: required
  Value type: <u32>
  Definition: The setting of the maximum current for the given LED channel,
	the valid values are: 0, 1, 2, 3, and the corresponding current
	setting are: 15mA, 30mA, 5mA, 10mA.

- awinic,led-current
  Usage: required
  Value type: <u32>
  Definition: The setting of the current when the LED channel is enabled.

- awinic,max-brightness
  Usage: required
  Value type: <u32>
  Definition: The maximum brightness value for the LED class device.

- awinic,rise-time-ms
  Usage: required
  Value type <u32>
  Definition: The duration of the led ramping from 0 to maximum brightness
	when breath function is enabled.

- awinic,hold-time-ms
  Usage: required
  Value type: <u32>
  Definition: The duration of the led staying at the maximum brightness
	when breath function is enabled.

- awinic,fall-time-ms
  Usage: required
  Value type: <u32>
  Definition: The duration of the led ramping down from maximum brightness
	to 0 when breath function is enabled.

- awinic,off-time-ms
  Usage: required
  Value type: <u32>
  Definition: The duration of the led staying at 0 brightness when breath
	function is enabled.

Example:
	awinic@64 {
		compatible = "awinic,aw2016_led";
		reg = <0x64>;

		awinic,red {
			awinic,name = "red";
			awinic,id = <0>;
			awinic,imax = <2>;
			awinic,led-current = <3>;
			awinic,max-brightness = <255>;
			awinic,rise-time-ms = <6>;
			awinic,hold-time-ms = <0>;
			awinic,fall-time-ms = <6>;
			awinic,off-time-ms = <4>;
		};

		awinic,green {
			awinic,name = "green";
			awinic,id = <1>;
			awinic,imax = <2>;
			awinic,led-current = <3>;
			awinic,max-brightness = <255>;
			awinic,rise-time-ms = <6>;
			awinic,hold-time-ms = <0>;
			awinic,fall-time-ms = <6>;
			awinic,off-time-ms = <4>;
		};

		awinic,blue {
			awinic,name = "blue";
			awinic,id = <2>;
			awinic,imax = <2>;
			awinic,led-current = <3>;
			awinic,max-brightness = <255>;
			awinic,rise-time-ms = <6>;
			awinic,hold-time-ms = <0>;
			awinic,fall-time-ms = <6>;
			awinic,off-time-ms = <4>;
		};
	};