linux-kernel - Re: [RFC] clean up headers for light drivers : backlights, leds and iio-light

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Message-ID: <20120605201738.GC27297@kroah.com>
Date:	Wed, 6 Jun 2012 05:17:38 +0900
From:	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
To:	"Kim, Milo" <Milo.Kim@...com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Richard Purdie <rpurdie@...ys.net>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC] clean up headers for light drivers : backlights, leds and
 iio-light

On Tue, Jun 05, 2012 at 03:43:08PM +0000, Kim, Milo wrote:
> I'd like to suggest some clean up idea for headers under include/linux.
> Light device drivers are exist under 'drivers/leds' and 'drivers/video/backlight'.
> (and iio light drivers are ongoing in staging directory)
> At this moment, there is no specific directory for light driver, some headers are located in include/linux.
> Furthermore, new light drivers may be added into include/linux again and again.

Why do any of these need .h files in include/linux/ in the first place?

> So my suggestion is 
> 
> - create new directory for light driver : include/linux/light
> - move driver headers into this directory
> - change header declaration per each driver source
> 
> Here is the cleanup list of light drivers.
> 
> (leds and backlight)
> include/linux/apple_bl.h
> include/linux/atmel_pwm.h
> include/linux/backlight.h
> include/linux/led-lm3530.h
> include/linux/leds-bd2802.h
> include/linux/leds.h
> include/linux/leds-lm3556.h
> include/linux/leds-lp3944.h
> include/linux/leds-lp5521.h
> include/linux/leds-lp5523.h
> include/linux/leds-pca9532.h
> include/linux/leds_pwm.h
> include/linux/leds-regulator.h
> include/linux/leds-tca6507.h
> include/linux/lp855x.h
> include/linux/pwm_backlight.h

Lots of those can move to include/linux/platform_data/ today, which
would clean up things a lot.  Care to do that first and see what is left
over and is really needed here?

thanks,

greg k-h
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