On Wed, 2019-06-05 at 15:45 -0400, Pedro Vanzella wrote:
> The gaming line of Logitech devices doesn't use the old hidpp20
> feature
> for battery level reporting. Instead, they report the current voltage
> of the battery, in millivolts.
> 
> This patch set handles this case by adding a quirk to the devices we
> know
> to have this new feature, in both wired and wireless mode.
> 
> This version of the patch set is better split, as well as adding the
> quirk to make sure we don't needlessly probe every device connected.
> 
> Pedro Vanzella (4):
>   HID: hid-logitech-hidpp: add quirk to handle battery voltage
>   HID: hid-logitech-hidpp: add function to query battery voltage
>   HID: hid-logitech-hidpp: report battery voltage to the power supply
>   HID: hid-logitech-hidpp: subscribe to battery voltage events
> 
>  drivers/hid/hid-logitech-hidpp.c | 150
> ++++++++++++++++++++++++++++++-
>  1 file changed, 147 insertions(+), 3 deletions(-)
> 

Hello,

Why using quirks? 0x1001 is a feature, it should be discoverable in
IFeatureSet (0x0001). I don't understand the need to hardcode the
supported devices, HID++ exists specifically to prevent that.

Wasn't this what you started in your previous patch? Why move away from
it?

Thank you,
Filipe Laíns
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