remarkable-linux/Documentation/ABI/testing/sysfs-class-led-driver-lm3533
Johan Hovold 401dea7f7a leds: add LM3533 LED driver
Add sub-driver for the LEDs on National Semiconductor / TI LM3533 lighting
power chips.

The chip provides 256 brightness levels, hardware accelerated blinking as
well as ambient-light-sensor and pwm input control.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Rob Landley <rob@landley.net>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-29 16:22:32 -07:00

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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