linux-kernel - Re: [PATCH v7 2/5] dt-bindings: leds: Add LED_COLOR_ID

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Message-ID: <0700c32d-643b-fedb-06f0-21547b18205d@gmail.com>
Date:   Thu, 19 Nov 2020 23:26:52 +0100
From:   Jacek Anaszewski <jacek.anaszewski@...il.com>
To:     Pavel Machek <pavel@....cz>
Cc:     Gene Chen <gene.chen.richtek@...il.com>, robh+dt@...nel.org,
        matthias.bgg@...il.com, dmurphy@...com, linux-leds@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        gene_chen@...htek.com, Wilma.Wu@...iatek.com,
        shufan_lee@...htek.com, cy_huang@...htek.com,
        benjamin.chao@...iatek.com
Subject: Re: [PATCH v7 2/5] dt-bindings: leds: Add LED_COLOR_ID_MOONLIGHT
 definitions

On 11/19/20 10:57 PM, Pavel Machek wrote:
> On Thu 2020-11-19 22:03:14, Jacek Anaszewski wrote:
>> Hi Pavel, Gene,
>>
>> On 11/18/20 10:37 PM, Pavel Machek wrote:
>>> Hi!
>>>
>>>> From: Gene Chen <gene_chen@...htek.com>
>>>>
>>>> Add LED_COLOR_ID_MOONLIGHT definitions
>>>
>>> Why is moonlight a color? Camera flashes are usually white, no?
>>>
>>> At least it needs a comment...
>>
>> That's my fault, In fact I should have asked about adding
>> LED_FUNCTION_MOONLIGHT, it was evidently too late for me that evening...
> 
> Aha, that makes more sense.
> 
> But please let's call it "torch" if we do that, as that is already
> used in kernel sources... and probably in the interface, too:

I'd say that torch is something different that moonlight,
but we would need more input from Gene to learn more about
the nature of light emitted by ML LED on his device.

Please note that torch is usually meant as the other mode of
flash LED (sometimes it is called "movie mode"), which is already
handled by brightness file of LED class flash device (i.e. its LED class
subset), and which also maps to v4l2-flash TORCH mode.

> ./arch/arm/mach-pxa/ezx.c:    	       	  .name = "a910::torch",
> 
> Best regards,
> 							Pavel
> 

-- 
Best regards,
Jacek Anaszewski