Thread (16 messages) 16 messages, 5 authors, 2020-12-09

Re: [PATCH v11 3/5] dt-bindings: leds: Add LED_FUNCTION_MOONLIGHT definitions

From: Rob Herring <robh@kernel.org>
Date: 2020-12-09 19:54:36
Also in: linux-devicetree, linux-leds, linux-mediatek, lkml

On Thu, Dec 03, 2020 at 09:06:42PM +0100, Jacek Anaszewski wrote:
Hi Pavel,

On 12/3/20 12:40 PM, Pavel Machek wrote:
quoted
Hi!
quoted
quoted
quoted
+++ b/include/dt-bindings/leds/common.h
@@ -78,6 +78,7 @@
  #define LED_FUNCTION_INDICATOR "indicator"
  #define LED_FUNCTION_LAN "lan"
  #define LED_FUNCTION_MAIL "mail"
+#define LED_FUNCTION_MOONLIGHT "moonlight"
There's "torch" function that should be used for this. I guess comment
should be added with explanation what exactly that is and how should
the LED be named.
According to mail, 11/25 "Re: [PATCH v7 2/5] dt-bindings: leds: Add
LED_COLOR_ID_MOONLIGHT definitions",
The Moonlight LED is LED which maximum current more than torch, but
less than flash. Such as front camera fill light.
I think our channel is moonlight, not torch.
I will add this description to comment.
We can't exactly define moonlight current level, because every vendor
has their own specification.
So... what is the timelimit on moonlight?

But if it is used for camera illumination, I believe it should be
simply called flash.
Let's keep FLASH reserved for LED flash class devices.
This device has already two other flash iouts.

Also iouts amperage gives clue that they have three different
functions.
Perhaps there should just be a table of currents and max times rather 
than trying to continually expand this while tied to function.

One could simply want an LED brighter when blinking than steady state 
would allow for.

Rob

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