linux-kernel - Re: [PATCH] leds-lm3530: replace pwm platform functions with generic pwm functions

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Message-ID: <20120820075038.GA20443@avionic-0098.mockup.avionic-design.de>
Date:	Mon, 20 Aug 2012 09:50:39 +0200
From:	Thierry Reding <thierry.reding@...onic-design.de>
To:	"Kim, Milo" <Milo.Kim@...com>
Cc:	Bryan Wu <bryan.wu@...onical.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH] leds-lm3530: replace pwm platform functions with generic
 pwm functions

On Mon, Aug 20, 2012 at 07:41:31AM +0000, Kim, Milo wrote:
> > Maybe we should get this resolved somehow in the meantime. Resolving
> > the
> > other issues may take another cycle or two, so you may not want to wait
> > that long.
> 
> Is that job also including HAVE_PWM configurations?
> Some SoCs still set HAVE_PWMs and codes exist under arch/ directory.
> As I far as understand, new PWM subsystem uses CONFIG_PWM not HAVE_PWM, right?
> And then will HAVE_PWM be cleaned-up?

Yes, the goal is to remove all implementations of the old framework
(HAVE_PWM) and replace it with PWM only implementations. I suppose we
could in the meantime add #ifdef CONFIG_HAVE_PWM around the legacy
functions and provide dummies in the !PWM case. That might work.

Thierry

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