[PATCH 2/7] basic LED support

Sascha Hauer s.hauer at pengutronix.de
Mon Dec 20 03:27:20 EST 2010


Hi Marc,

On Mon, Dec 20, 2010 at 08:31:34AM +1100, Marc Reilly wrote:
> Hi Sascha,
> 
> Thanks, this works well for my board. (tri colour led).
> 
> Was drivers/led/led-triggers.c missing from the patch set? 
> I haven't been able to compile with trigger support...

Yes, it's missing. I'll send a new series shortly.

> 
> > +/**
> > + * led_register - Register a LED
> > + * @param led	the led
> > + */
> > +int led_register(struct led *led)
> > +{
> > +	led->num = num_leds++;
> > +
> > +	list_add_tail(&led->list, &leds);
> > +
> > +	return 0;
> > +}
> 
> How about being able to register a led at a specific number? This means that 
> boot/init scripts that want to interact with leds don't rely on the order that 
> they are registered.
> 
> I also like the suggestion of associating a name to LEDs. This may even be a 
> better fit for scripting than reserved numbering.

I'll add a name for the LEDs

> 
> 
> > +
> > +/**
> > + * led_unregister - Unegister a LED
> > + * @param led	the led
> > + */
> > +void led_unregister(struct led *led)
> > +{
> > +	list_del(&led->list);
> > +}
> > diff --git a/include/led.h b/include/led.h
> > new file mode 100644
> > index 0000000..62d0d08
> > --- /dev/null
> > +++ b/include/led.h
> > @@ -0,0 +1,25 @@
> > +#ifndef __LED_H
> > +#define __LED_H
> > +
> > +struct led {
> > +	unsigned long triger;
> 
> Spelling typo? (Should this be trigger ?)

Indeed. It turns out I don't need this line add all, so I removed it.

Sascha


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