What:		/sys/class/leds/<led>/als_channel
Date:		May 2012
KernelVersion:	3.5
Contact:	Johan Hovold <jhovold@gmail.com>
Description:
		Set the ALS output channel to use as input in
		ALS-current-control mode (1, 2), where:

		==  ============
		1   out_current1
		2   out_current2
		==  ============

What:		/sys/class/leds/<led>/als_en
Date:		May 2012
KernelVersion:	3.5
Contact:	Johan Hovold <jhovold@gmail.com>
Description:
		Enable ALS-current-control mode (0, 1).

What:		/sys/class/leds/<led>/falltime
What:		/sys/class/leds/<led>/risetime
Date:		April 2012
KernelVersion:	3.5
Contact:	Johan Hovold <jhovold@gmail.com>
Description:
		Set the pattern generator fall and rise times (0..7), where:

		==  =======
		0   2048 us
		1   262 ms
		2   524 ms
		3   1.049 s
		4   2.097 s
		5   4.194 s
		6   8.389 s
		7   16.78 s
		==  =======

What:		/sys/class/leds/<led>/id
Date:		April 2012
KernelVersion:	3.5
Contact:	Johan Hovold <jhovold@gmail.com>
Description:
		Get the id of this led (0..3).

What:		/sys/class/leds/<led>/linear
Date:		April 2012
KernelVersion:	3.5
Contact:	Johan Hovold <jhovold@gmail.com>
Description:
		Set the brightness-mapping mode (0, 1), where:

		==  ================
		0   exponential mode
		1   linear mode
		==  ================

What:		/sys/class/leds/<led>/pwm
Date:		April 2012
KernelVersion:	3.5
Contact:	Johan Hovold <jhovold@gmail.com>
Description:
		Set the PWM-input control mask (5 bits), where:

		=====  ===========================
		bit 5  PWM-input enabled in Zone 4
		bit 4  PWM-input enabled in Zone 3
		bit 3  PWM-input enabled in Zone 2
		bit 2  PWM-input enabled in Zone 1
		bit 1  PWM-input enabled in Zone 0
		bit 0  PWM-input enabled
		=====  ===========================
