On Thu, Mar 23, 2017 at 09:37:49PM +0100, Pavel Machek wrote:

Hi!

quoted

The Light Pulse Generator (LPG) is a PWM-block found in a wide range of
PMICs from Qualcomm. It can operate on fixed parameters or based on a
lookup-table, altering the duty cycle over time - which provides the
means for e.g. hardware assisted transitions of LED brightness.

Ok, this is not first hardware that supports something like this. We
have similar hardware that can do blinking on Nokia N900 -- please
take a look at leds-lp55*.c

And perhaps some alignment on the bindings too if the N900 has bindings.

And it would be really good to provide hardware abstraction. We really
don't want to have different userspace for LPG and for N900 and for

I'm interested in what this looks like as several AOSP platforms do 
tri-color LEDs with custom sysfs extensions.

Do any of the Dragonboards have tri-color LEDs?

Rob
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