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SubjectRe: [PATCH] ata: ahci: Enable enclosure management via LED (resend)
On Thu, 25 Oct 2007 23:35:11 +0200
Ingo Oeser <> wrote:

> Hi Kristen,
> On Thursday 25 October 2007, Kristen Carlson Accardi wrote:
> > Enable enclosure management via LED
> >
> > As described in the AHCI spec, some AHCI controllers may support
> > Enclosure management via a variety of protocols. This patch
> > adds support for the LED message type that is specified in
> > AHCI 1.1 and higher.
> Linux has a LED subsystem for that. May I suggest, that you just register
> these leds and let userspace handle them via that via the LED API?
> The LED userspace API is described in Documentation/leds-class.txt
> and the headers for registering LEDs is linux/leds.h under include/
> Since you explicitly WANT user space to control these, that should
> be the right API.
> Richard, what do YOU think?
> Best Regards
> Ingo Oeser

I did look into using the LED class for this, but it didn't appropriate
as I wanted the leds to be associated with a particular disk, and not
with the platform as a whole. It seemed to me that the led_class was
a bit of overkill for what we needed to do here, since we just need
on/off and nothing else.
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