linux-kernel - Re: [PATCH RESEND] LEDS-One-Shot-Timer-Trigger-implementation

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Date:	Wed, 11 Apr 2012 09:33:30 -0600
From:	Shuah Khan <shuahkhan@...il.com>
To:	Richard Purdie <richard.purdie@...uxfoundation.org>
Cc:	shuahkhan@...il.com, akpm@...ux-foundation.org, neilb@...e.de,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RESEND] LEDS-One-Shot-Timer-Trigger-implementation

On Wed, 2012-04-11 at 11:05 +0100, Richard Purdie wrote:
> On Tue, 2012-04-10 at 09:31 -0600, Shuah Khan wrote:
> > On Tue, 2012-04-10 at 14:24 +0100, Richard Purdie wrote:

> No, I did not mean adding another interface. Why can't we have a trigger
> which just triggers once and then stops? It would be similar to the
> timer trigger but with a different name and way of operating.

This patch adds code to register a new trigger named timer-no-default
and uses delay_on and delay_off to set the timer once. timer is not set
when delay == LED_TIMER_FOREVER. Are you concerned about overloading
blink_delay_on and blink_delay_off values specifically?

> 
> > > Dimity raises some valid questions about the force-feedback framework in
> > > the input system too. We need to make a decision about where phone
> > > vibration framework belongs and then stick to that. You can argue this
> > > to either subsystem, neither "led" or "input" is a obvious description
> > > of phone vibration at a first glance!
> > 
> > force-feedback framework is another alternative. Making a decision is
> > great, what are the next steps to get closer to making a call? 
> 
> I'd first like to understand why this couldn't be a separate trigger,
> then we can understand the alternatives we're comparing.

Yes. No problem doing that.

-- Shuah
> 
> Cheers,
> 
> Richard
> 
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