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Message-Id: <1234912273.5312.71.camel@dax.rpnet.com> Date: Tue, 17 Feb 2009 23:11:13 +0000 From: Richard Purdie <rpurdie@...ys.net> To: Felipe Balbi <felipe.balbi@...ia.com> Cc: linux-kernel@...r.kernel.org, David Brownell <dbrownell@...rs.sourceforge.net>, Andrew Morton <akpm@...ux-foundation.org>, Felipe Balbi <me@...ipe.balbi.com>, Felipe Balbi <me@...ipebalbi.com> Subject: Re: [PATCH] leds: triggers: introduce gpio led trigger On Tue, 2009-02-17 at 13:18 +0200, Felipe Balbi wrote: > From: Felipe Balbi <me@...ipe.balbi.com> > > The gpio led trigger will allow leds to be triggered by > gpio events. > > When we give the led a gpio number, the trigger will > request_irq() on that so we don't have to keep polling > for gpio state. > > It's useful for usecases as n810's keypad leds that could > be triggered by the gpio event generated when user slides > up to show the keypad. > > We also provide means for userland to tell us what is the > desired brightness for that special led when it goes on > so userland could use information from ambient light sensors > and not set led brightness too high if it's not necessary. > > This trigger was tested with n810. Added to the LED tree, thanks. Richard -- Richard Purdie Intel Open Source Technology Centre -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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