[alsa-devel] [PATCH 0/6] Introduce audio-mute LED trigger (and conversions to it)

[Jacek Anaszewski]

On 11/28/2018 01:25 PM, Pavel Machek wrote:
> On Wed 2018-11-28 12:38:19, Takashi Iwai wrote:
>> On Wed, 28 Nov 2018 12:18:06 +0100,
>> Pali Rohár wrote:
>>>
>>> On Tuesday 27 November 2018 09:44:18 Pavel Machek wrote:
>>>> Looks good... except one detail: you have "tpacpi::micmute" and
>>>> "dell::micmute". I know it follows "tradition", but we are trying to
>>>> fix that at the moment. Laptop micmute button is a laptop micmute
>>>> button, and userspace should not need to know what prefix to use
>>>> depending on vendor.
>>>>
>>>> I'd suggest using "sys::micmute".
>>>
>>> I can imagine that in future some devices like keyboards would have also
>>> mute led. We already have keyboards with mute key, so it is something
>>> not unrealistic. What should be name convention for these mute leds?
>>>
>>> Is not "sys::" prefix too generic?
>>
>> Good point.  I thought of "laptop::" but it's not always laptop.
>> "builtin::"?  Doesn't sound great, either.
>>
>> A nice godfather is required here...
> 
> Just use sys:: :-).
> 
> laptop:: would work for me, too. (It is always laptop in the cases we
> are handling now, right?)
> 
> When we get a keyboard with mute led, we'll have to decide if it
> should be input6::mute -- because it is on keyboard, or if it is
> sys::mute -- because the key is expected to mute whole system.

drivers/input/input-leds.c seems to already support mute LED.
It will be exposed as inputN::mute.

Documentation/leds/leds-class.txt defines LED naming pattern
to <devicename:color:function> and "sys" does not look as
something resembling device name.

-- 
Best regards,
Jacek Anaszewski