[Bug 209835] New: Logitech G11 Keyboard's G Keys stopped working since support of G15/G510 keyboard was added to the kernel

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https://bugzilla.kernel.org/show_bug.cgi?id=209835

            Bug ID: 209835
           Summary: Logitech G11 Keyboard's G Keys stopped working since
                    support of G15/G510 keyboard was added to the kernel
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.9.1
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: USB
          Assignee: drivers_usb@kernel-bugs.kernel.org
          Reporter: phobosk@fastmail.fm
        Regression: No

Ever since support for Logitech G15/G510 G keys was added to the kernel, my
Logitech G11's G keys stopped working.
This is because the hid-lg-g15 loads and "steals" the keys, but it cannot
activate the M1, M2, M3, MR keys (the latter is just my guess).
When I blacklist the module hid-lg-g15, the keys start working normally again
(I use also hwdb to remap them)

Here is more info:
Kernel: 5.9.1
Last kernel working: 5.5.2 ( the hid-lg-g15.mod.c is still missing the line
MODULE_ALIAS("hid:b0003g*v0000046Dp0000C225"); )


The G keys input device (with blacklisted hid-lg-g15):

I: Bus=0003 Vendor=046d Product=c225 Version=0111
N: Name="G11 Keyboard Keypad"
P: Phys=usb-0000:00:12.0-5.4/input0
S:
Sysfs=/devices/pci0000:00/0000:00:12.0/usb6/6-5/6-5.4/6-5.4:1.0/0003:046D:C225.000E/input/input45
U: Uniq=
H: Handlers=sysrq kbd event4
B: PROP=0
B: EV=100013
B: KEY=100043d900c07 ff980000003007ff febeffdffe6fffe0 7ffffffffffff02
B: MSC=10

The other entries for the keyboard:

I: Bus=0003 Vendor=046d Product=c221 Version=0110
N: Name="Gaming Keyboard"
P: Phys=usb-0000:00:12.0-5.1/input0
S:
Sysfs=/devices/pci0000:00/0000:00:12.0/usb6/6-5/6-5.1/6-5.1:1.0/0003:046D:C221.000C/input/input42
U: Uniq=
H: Handlers=sysrq kbd leds event2
B: PROP=0
B: EV=120013
B: KEY=1000000000007 ff800000000007ff febeffdfffefffff fffffffffffffffe
B: MSC=10
B: LED=1f

I: Bus=0003 Vendor=046d Product=c221 Version=0110
N: Name="Gaming Keyboard Consumer Control"
P: Phys=usb-0000:00:12.0-5.1/input1
S:
Sysfs=/devices/pci0000:00/0000:00:12.0/usb6/6-5/6-5.1/6-5.1:1.1/0003:046D:C221.000D/input/input43
U: Uniq=
H: Handlers=kbd event3
B: PROP=0
B: EV=13
B: KEY=7800000000 e000000000000 0
B: MSC=10


lsusb:
Bus 006 Device 016: ID 046d:c225 Logitech, Inc. G11/G15 Keyboard / G keys
Bus 006 Device 015: ID 046d:c221 Logitech, Inc. G11/G15 Keyboard / Keyboard
Bus 006 Device 014: ID 046d:c223 Logitech, Inc. G11/G15 Keyboard / USB Hub


the evtest with the loaded hid-lg-g15 module produces only one type of entries
like:
type 1 (EV_KEY), code 656 (??), value 1
-------------- SYN_REPORT ------------
type 1 (EV_KEY), code 656 (??), value 0
-------------- SYN_REPORT ------------

for G1 and for G18:

type 1 (EV_KEY), code 673 (??), value 1
-------------- SYN_REPORT ------------
type 1 (EV_KEY), code 673 (??), value 0
-------------- SYN_REPORT ------------

The M1,M2,M3 and MR keys also produce such entries + their leds do not work at
all...


As I said a workaround for me is to blacklist the hid-lg-g15 module, but could
this module be made to be more precise when loading and not load for the G11
keyboard?

Another thing is if you want I may help (by testing mainly :) ) in adding
support to this module for the G11 keyboard?

Thanks

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