linux-kernel - Re: [RFC] adp1653: Add device tree bindings for LED controller

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Message-ID: <546CDADD.3080003@iki.fi>
Date:	Wed, 19 Nov 2014 20:01:01 +0200
From:	Sakari Ailus <sakari.ailus@....fi>
To:	Pavel Machek <pavel@....cz>, Tony Lindgren <tony@...mide.com>
CC:	Pali Rohár <pali.rohar@...il.com>, sre@...ian.org,
	sre@...g0.de, kernel list <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-omap@...r.kernel.org, khilman@...nel.org,
	aaro.koskinen@....fi, freemangordon@....bg, bcousson@...libre.com,
	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	devicetree@...r.kernel.org, linux-media@...r.kernel.org
Subject: Re: [RFC] adp1653: Add device tree bindings for LED controller

Hi Pavel,

Pavel Machek wrote:
> On Mon 2014-11-17 07:06:17, Tony Lindgren wrote:
>> * Pali Rohár <pali.rohar@...il.com> [141117 07:03]:
>>> On Monday 17 November 2014 15:55:46 Tony Lindgren wrote:
>>>>
>>>> There's nothing stopping us from initializing the camera code
>>>> from pdata-quirks.c for now to keep it working. Certainly the
>>>> binding should be added to the driver, but that removes a
>>>> dependency to the legacy booting mode if things are otherwise
>>>> working.
>>>
>>> Tony, legacy board code for n900 is not in mainline tree. And 
>>> that omap3 camera subsystem for n900 is broken since 3.5 
>>> kernel... (both Front and Back camera on n900 show only green 
>>> picture).
>>
>> I'm still seeing the legacy board code for n900 in mainline tree :)
>> It's deprecated, but still there.
>>
>> Are you maybe talking about some other piece of platform_data that's
>> no longer in the mainline kernel?
>>
>> No idea what might be wrong with the camera though.
> 
> Camera support for main and secondary cameras was never mainline, AFAICT.
> 
> Merging it will not be easy, as it lacks DT support... and was broken
> for long time.

I have a smiapp patchset for DT support that I posted a while ago, here:

<URL:http://www.spinics.net/lists/linux-media/msg83285.html>

What's missing on top of that is the omap3isp support, plus something to
toggle the sysctl registers based on the chosen receiver. I have a
preliminary, not RFC yet but functional set here:

<URL:http://vihersipuli.retiisi.org.uk/cgi-bin/gitweb.cgi?p=~sailus/linux.git;a=shortlog;h=refs/heads/rm696-045-dt>

The main camera support requires et8ek8 driver as well, and resolving
the breakage with the image capture on 3430.

N9/N950 will be first, though. Lens controllers are another matter, but
nothing too difficult on that side either.

> Anyway, flash is kind of important for me, since it makes phone useful
> as backup light; and it is simple piece of hw, so I intend to keep it
> useful.

Me, too. :-)

-- 
Kind regards,

Sakari Ailus
sakari.ailus@....fi
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