Re: API for setting colors of RGB backlit keyboard zones (was [PATCH V3] platform/x86: hp-wmi: Support omen backlight control wmi-acpi methods)

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Hi,

On 2/19/23 19:46, Rishit Bansal wrote:
> 
> 
> On 19/02/23 18:50, Hans de Goede wrote:
>> Hi,
>>
>> On 2/18/23 12:48, Pavel Machek wrote:
>>> Hi!
>>>
>>>
>>>>> I do agree with you that we need to avoid kbd_backlight in the name to avoid causing existing upower code to have weird interactions with this (it supports / assumes there is only 1 kbd_backlight LED class device).
>>>>>
>>>>> So lets go with just these 4:
>>>>>
>>>>> /sys/class/leds/hp_omen::kbd_zoned_backlight-1/
>>>>> /sys/class/leds/hp_omen::kbd_zoned_backlight-2/
>>>>> /sys/class/leds/hp_omen::kbd_zoned_backlight-3/
>>>>> /sys/class/leds/hp_omen::kbd_zoned_backlight-4/
>>>>>
>>>>> Using the _zoned_ between kbd and baclight to avoid confusing the existing upower code. Then once this has landed we can look into extending upower support for this.
>>>>>
>>>>> Note the requested documentation patch should probably also explain that the _zoned_ was done deliberately to make current upower code ignore the devices.
>>>>>
>>>
>>>>
>>>> This makes sense, I agree that the global LED file will cause more confusion
>>>> and hacks in the code. I'll start working on the  _zoned_ naming scheme with
>>>> 4 files + documentation changes and make a patch for this soon!
>>>>
>>>
>>> /sys/class/leds/:rgb:kbd_zoned_backlight-4/ is better than what was
>>> suggested above.
>>
>> Ah yes using rgb for the color part of the name makes sense.
>>
>>> But we already use _1 suffix to deduplicate the, so
>>> I'm not sure this is best naming.
>>
>>
>>
>> I guess we could try to actually name the zones, something like
>> (no idea if this are indeed the 4 zones):
>>
>> :rgb:kbd_zoned_backlight-main
>> :rgb:kbd_zoned_backlight-wasd
>> :rgb:kbd_zoned_backlight-cursor
>> :rgb:kbd_zoned_backlight-numpad
>>
>> Rishit any comments on this or improvements to it.
> 
> Here is an image of how the 4 zones on the keyboard look like (https://imgur.com/a/iQdRWCM). I think we can call them "left", "middle", "right", and "wasd":
> 
> :rgb:kbd_zoned_backlight-left
> :rgb:kbd_zoned_backlight-middle
> :rgb:kbd_zoned_backlight-right
> :rgb:kbd_zoned_backlight-wasd

Sounds good to me, lets go for this. Please add these names to
the requested documentation update.

Regards,

Hans




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