[v6,1/6] FROMLIST: arm64: dts: qcom: sc7180-trogdor: Split out keyboard node and describe detachables

From: Stephen Boyd <swboyd@chromium.org>

Trogdor devices that have a detachable keyboard still have a
non-detachable keyboard input device present because we include the
cros-ec-keyboard.dtsi snippet in the top-level sc7180-trogdor.dtsi file
that every variant board includes. We do this because the
keyboard-controller node also provides some buttons like the power
button and volume buttons. Unfortunately, this means we register a
keyboard input device that doesn't do anything on boards with a
detachable keyboard.

Change the node's compatible on detachables to the newly introduced
"google,cros-ec-keyb-switches" compatible to indicate that there are
only switches and no keyboard to register. Similarly, move the keyboard
include that defines the keyboard-controller node out of
sc7180-trogdor.dtsi to boards that actually have a keyboard so that the
matrix properties are not defined on boards with the switches
compatible. Future boards can either use the include approach or the
node definition approach to describe a keyboard with possible switches
or just some switches.

Cc: Benson Leung <bleung@chromium.org>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Hsin-Yi Wang <hsinyi@chromium.org>
Cc: "Joseph S. Barrera III" <joebar@chromium.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
(am from https://lore.kernel.org/r/20220518172525.3319993-1-swboyd@chromium.org)

     evtest shows no more cros_ec device

Cq-Depend: chromium:3609017
Tested-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Joseph S. Barrera III <joebar@chromium.org>
---

Changes in v6:
 - First inclusion of this patch.

 arch/arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi   | 4 ++++
 arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi | 6 ++++++
 arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi    | 2 ++
 arch/arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi   | 2 ++
 arch/arm64/boot/dts/qcom/sc7180-trogdor-r1.dts        | 2 ++
 arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi          | 1 -
 6 files changed, 16 insertions(+), 1 deletion(-)

Hi,

On Fri, Jun 17, 2022 at 12:47 PM Doug Anderson <dianders@chromium.org> wrote:
>
> Hi,
>
> On Fri, Jun 17, 2022 at 11:12 AM Joseph S. Barrera III
> <joebar@chromium.org> wrote:
> >
> > From: Stephen Boyd <swboyd@chromium.org>
> >
> > Trogdor devices that have a detachable keyboard still have a
> > non-detachable keyboard input device present because we include the
> > cros-ec-keyboard.dtsi snippet in the top-level sc7180-trogdor.dtsi file
> > that every variant board includes. We do this because the
> > keyboard-controller node also provides some buttons like the power
> > button and volume buttons. Unfortunately, this means we register a
> > keyboard input device that doesn't do anything on boards with a
> > detachable keyboard.
> >
> > Change the node's compatible on detachables to the newly introduced
> > "google,cros-ec-keyb-switches" compatible to indicate that there are
> > only switches and no keyboard to register. Similarly, move the keyboard
> > include that defines the keyboard-controller node out of
> > sc7180-trogdor.dtsi to boards that actually have a keyboard so that the
> > matrix properties are not defined on boards with the switches
> > compatible. Future boards can either use the include approach or the
> > node definition approach to describe a keyboard with possible switches
> > or just some switches.
> >
> > Cc: Benson Leung <bleung@chromium.org>
> > Cc: Guenter Roeck <groeck@chromium.org>
> > Cc: Douglas Anderson <dianders@chromium.org>
> > Cc: Hsin-Yi Wang <hsinyi@chromium.org>
> > Cc: "Joseph S. Barrera III" <joebar@chromium.org>
> > Signed-off-by: Stephen Boyd <swboyd@chromium.org>
> > (am from https://lore.kernel.org/r/20220518172525.3319993-1-swboyd@chromium.org)
> >
> >      evtest shows no more cros_ec device
> >
> > Cq-Depend: chromium:3609017
> > Tested-by: Stephen Boyd <swboyd@chromium.org>
> > Reviewed-by: Douglas Anderson <dianders@chromium.org>
> > Signed-off-by: Joseph S. Barrera III <joebar@chromium.org>
>
> It's OK to re-post Stephen's patch with your series, but:
>
> 1. The subject shouldn't have FROMLIST. That's just for patches picked
> back to a Chromium OS kernel.
>
> 2. You shouldn't have "(am from...)". Again, just for patches picked
> back to a Chromium OS kernel.
>
> 3. No Cq-Depend. That's something for patches picked back to a
> Chromium OS kernel.
>
> 4. You should remove tags that were added by the Chromium review
> system, like Stephen's "Tested-by" and my "Reviewed-by".
>
>
> Another alternative is to not post Stephen's patch but add a note that
> your patch should be applied atop his, then point to his. AKA:
>
> https://lore.kernel.org/r/20220518172525.3319993-1-swboyd@chromium.org

A further note is that your series ought to be based on this one:

https://patchwork.kernel.org/project/linux-arm-msm/patch/20220602190621.1646679-1-swboyd@chromium.org/

...but when I apply your patch atop that one I get merge conflicts.

-Doug