linux-kernel - Re: [PATCHv2 07/11] ARM: OMAP3: Beagle: use PWM_LOOKUP to initialize struct pwm

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Date:	Tue, 15 Apr 2014 16:14:31 +0900
From:	Simon Horman <horms@...ge.net.au>
To:	Peter Ujfalusi <peter.ujfalusi@...com>
Cc:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Thierry Reding <thierry.reding@...il.com>,
	Tony Lindgren <tony@...mide.com>,
	Philipp Zabel <philipp.zabel@...il.com>,
	Paul Parsons <lost.distance@...oo.com>,
	Magnus Damm <magnus.damm@...il.com>,
	Eric Miao <eric.y.miao@...il.com>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Bryan Wu <cooloney@...il.com>,
	Jingoo Han <jg1.han@...sung.com>,
	Lee Jones <lee.jones@...aro.org>, linux-pwm@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-omap@...r.kernel.org, linux-sh@...r.kernel.org,
	linux-leds@...r.kernel.org, linux-fbdev@...r.kernel.org
Subject: Re: [PATCHv2 07/11] ARM: OMAP3: Beagle: use PWM_LOOKUP to initialize
 struct pwm_lookup

On Tue, Apr 15, 2014 at 10:01:44AM +0300, Peter Ujfalusi wrote:
> On 04/15/2014 12:59 AM, Alexandre Belloni wrote:
> > Signed-off-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
> > ---
> >  arch/arm/mach-omap2/board-omap3beagle.c | 10 ++--------
> >  1 file changed, 2 insertions(+), 8 deletions(-)
> > 
> > diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
> > index f27e1ec90b5e..54c135a5b4f7 100644
> > --- a/arch/arm/mach-omap2/board-omap3beagle.c
> > +++ b/arch/arm/mach-omap2/board-omap3beagle.c
> > @@ -61,14 +61,8 @@
> >  
> >  static struct pwm_lookup pwm_lookup[] = {
> >  	/* LEDB -> PMU_STAT */
> > -	{
> > -		.provider = "twl-pwmled",
> > -		.index = 1,
> > -		.dev_id = "leds_pwm",
> > -		.con_id = "beagleboard::pmu_stat",
> > -		.period = 7812500,
> > -		.polarity = PWM_POLARITY_NORMAL,
> > -	},
> > +	PWM_LOOKUP("twl-pwmled", 1, "leds_pwm", "beagleboard::pmu_stat",
> > +		   7812500, PWM_POLARITY_NORMAL),
> 
> Why do you need to do this in two steps?
> In patch 4 you removed the existing PWM_LOOKUP() and now you are adding it back.
> Would not be simpler if you just add the two new parameters in patch 4 (the
> 812500, PWM_POLARITY_NORMAL)?

Such an approach would apply an atomic change to both the infrastructure
and the users.
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