Re: [PATCH v3] leds: implement OpenFirmare GPIO LED driver

From: Trent Piepho
Date: Thu Jul 17 2008 - 16:20:36 EST

On Thu, 17 Jul 2008, Grant Likely wrote:
> Alternately, I would also be okay with a scheme where all LED nodes
> have a common parent and an of_platform driver would bind against the
> parent node; not the individual children. Then the leds-gpio driver
> could be refactored to have both platform and of_platform bus
> bindings.

Basically what I did then in my patch then, refactor leds-gpio so most of
it is shared and there is a block of code that does platform binding and
another block that does of_platform binding.

I didn't change the OF platform binding syntax so as not to complicate the
example, but that's easy to do. Something like:

leds {
compatible = "gpio-led";
gpios = <&mpc8572 6 0
&mpc8572 7 0>;
labels = "red", "green";

Or like this, which needs a little more code to parse:

leds {
compatible = "gpio-led";
led@6 {
gpios = <&mpc8572 6 0>;
label = "red";
led@7 {
gpios = <&mpc8572 7 0>;
label = "green";

I like the first better. It follows the example from the docs about how
devices with multiple gpios should work too.
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