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Commit 5054d39e authored by Antonio Ospite's avatar Antonio Ospite Committed by Richard Purdie
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leds: LED driver for National Semiconductor LP3944 Funlight Chip

LEDs driver for National Semiconductor LP3944 Funlight Chip
http://www.national.com/pf/LP/LP3944.html



This helper chip can drive up to 8 leds, with two programmable DIM
modes; it could even be used as a gpio expander but this driver assumes
it is used as a led controller.

The DIM modes are used to set _blink_ patterns for leds, the pattern is
specified supplying two parameters:
  - period: from 0s to 1.6s
  - duty cycle: percentage of the period the led is on, from 0 to 100

LP3944 can be found on Motorola A910 smartphone, where it drives the rgb
leds, the camera flash light and the displays backlights.

Signed-off-by: default avatarAntonio Ospite <ospite@studenti.unina.it>
Signed-off-by: default avatarRichard Purdie <rpurdie@linux.intel.com>
parent 07172d2b
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