[PATCH] leds: Add LED class driver for regulator driven LEDs.

[Mark Brown]

On Fri, Dec 04, 2009 at 01:39:43PM +0100, Antonio Ospite wrote:
> Mark Brown <broonie at opensource.wolfsonmicro.com> wrote:

> > You almost certainly want regulator_get_exclusive() here; this driver
> > can't function properly if something else is using the regulator and
> > holding the LED on or off without it.  You'll also want to check the
> > status of the LED on startup and update your internal status to match
> > that.

> When you refer to "the status of the LED on startup" do you mean a
> initial brightness value passed via leds-regulator platform data, or the
> initial status or the regulator itself?

The hardware state at startup; I would imagine that you'd want to make
setting the initial state via platform data optional in order to enable
a smooth handover from bootloader to Linux where the state may depend on
the runtime state (eg, charging indication).