linux-kernel - Re: [PATCH v32 2/6] leds: lp50xx: Add the LP50XX family of the RGB LED driver

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Message-ID: <20200811220109.GA9105@amd>
Date:   Wed, 12 Aug 2020 00:01:09 +0200
From:   Pavel Machek <pavel@....cz>
To:     Dan Murphy <dmurphy@...com>
Cc:     jacek.anaszewski@...il.com, robh@...nel.org, marek.behun@....cz,
        devicetree@...r.kernel.org, linux-leds@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v32 2/6] leds: lp50xx: Add the LP50XX family of the RGB
 LED driver

Hi!

> >Actually... This is quite impressive ammount of code to
> >zero-initialize few registers. Could the regmap be told to set the
> >range to zero, or use loops to reduce ammount of code?
> 
> I am not aware of any regmap calls that will set a range of registers to a
> certain value.
> 
> Well it depends on where we want to create the default cache values.
> 
> Either we run through a for..loop during driver probe and delay device start
> up or we keep the simple arrays and increase the driver total size.

for loop will be better.

Plus, REGCACHE_RBTREE is very likely overkill.

Best regards,

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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