Re: [RESEND PATCH 1/3] rfkill: Create "rfkill-airplane-mode" LED trigger

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On 13 June 2016 at 17:01, Pavel Machek <pavel@xxxxxx> wrote:
> On Mon 2016-06-13 15:59:35, João Paulo Rechi Vita wrote:
>> On 13 June 2016 at 15:00, Pavel Machek <pavel@xxxxxx> wrote:
>> > Hi!
>> >
>> >> > João, that means you should send a patch to add the ::rfkill suffix.
>> >> >
>> >>
>> >> IMO "airplane" (or maybe "airplane-mode") is a better suffix, as it
>> >> reflects the label on the machine's chassis. I'll name it
>> >> "asus-wireless::airplane" and send this through platform-drivers-x86,
>> >> as this is now contained in the platform-drivers-x86 subsystem. Thanks
>> >> Johannes for your patience and help designing and reviewing the rfkill
>> >> changes, even if not all of them made it through in the end. And
>> >> thanks everyone else involved for the feedback.
>> >
>> > Actually, I'd do '::rfkill', for consistency with other places in
>> > /sys.
>> >
>> > /sys/devices/platform/thinkpad_acpi/rfkill/rfkill1/name
>> > /sys/class/rfkill
>> > /sys/module/rfkill
>> >
>>
>> If we use "rfkill" as a suffix, how do you expect userspace to be able
>> to differentiate between a LED that indicates airplane-mode (LED ON
>> when all radios are OFF) and a LED that indicates the state of a
>> specific radio like WiFi or Bluetooth (LED ON when that specific radio
>> is ON)? If we're going this route we should provide meaningful
>> information here.
>
> '::airplane' has same problem, no?
>

No, because in this case we would not use "airplane" as a suffix for a
LED associated with an individual radio.

> If you want to distinguish that, maybe you can do '::rfkill' for
> everything vs '::rfkill-wifi' for wifi-only and '::rfkill-bt' for
> bluetooth...
>

The problem here is that the "rfkill" name is already associated with
individual rfkill switches under /sys/class/rfkill,
/sys/devices/platform/*/rfkill etc, so I think we're better off
distinguishing "airplane" vs "wifi" vs "bluetooth" etc, to avoid
confusion.

--
João Paulo Rechi Vita
http://about.me/jprvita
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