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Date:   Fri, 8 Jan 2021 18:52:40 +0100
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     Doug Anderson <dianders@...omium.org>
Cc:     Jiri Kosina <jkosina@...e.cz>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        "open list:HID CORE LAYER" <linux-input@...r.kernel.org>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Rob Herring <robh+dt@...nel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Andrea Borgia <andrea@...gia.bo.it>,
        Anson Huang <Anson.Huang@....com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Daniel Playfair Cal <daniel.playfair.cal@...il.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Guido G√ľnther <agx@...xcpu.org>,
        Jiri Kosina <jikos@...nel.org>, Li Yang <leoyang.li@....com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Max Krummenacher <max.oss.09@...il.com>,
        Michael Walle <michael@...le.cc>,
        Pavel Balan <admin@...ma.net>, Shawn Guo <shawnguo@...nel.org>,
        Vinod Koul <vkoul@...nel.org>, Will Deacon <will@...nel.org>,
        Xiaofei Tan <tanxiaofei@...wei.com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v8 0/4] HID: i2c-hid: Reorganize to allow supporting goodix,gt7375p

Hi Doug,

On Wed, Jan 6, 2021 at 2:35 AM Doug Anderson <dianders@...omium.org> wrote:
>
> Benjamin,
>
> On Fri, Dec 11, 2020 at 2:24 PM Douglas Anderson <dianders@...omium.org> wrote:
> >
> > The goal of this series is to support the Goodix GT7375P touchscreen.
> > This touchscreen is special because it has power sequencing
> > requirements that necessitate driving a reset GPIO.
> >
> > To do this, we totally rejigger the way i2c-hid is organized so that
> > it's easier to jam the Goodix support in there.
> >
> > This series was:
> > - Tested on a device that uses normal i2c-hid.
> > - Tested on a device that has a Goodix i2c-hid device.
> > - Tested on an ACPI device, but an earlier version of the series.
> >
> > I believe the plan is for Benjamin to land the whole series.  Will
> > said this about the arm64 defconfig change (and provided his Ack):
> > > ...there are a few things I really care about
> > > in defconfig (e.g. things like page size!), generally speaking we don't
> > > need to Ack everything that changes in there.
> > >
> > > That said, might be worth checking whether arm-soc have any defconfig
> > > changes queued in -next so you don't end up with conflicts.
> >
> > Changes in v8:
> > - Mark suspend/resume as static as per patches robot.
> >
> > Changes in v7:
> > - Rebase atop commit afdd34c5fa40 ("HID: i2c-hid: show the error ...")
> >
> > Changes in v6:
> > - ACPI probe function should have been "static"
> > - Don't export suspend/resume, just export dev_pm_ops from core.
> > - Fixed crash in ACPI module (missing init of "client")
> > - No need for regulator include in the core.
> > - Removed i2c_device_id table from ACPI module.
> > - Suspend/resume are no longer exported from the core.
> >
> > Changes in v5:
> > - Add shutdown_tail op and use it in ACPI.
> > - Added mention of i2c-hid in the yaml itself as per Rob.
> > - Adjusted subject as per Rob.
> > - i2chid_subclass_data => i2chid_ops.
> > - power_up_device => power_up (same with power_down).
> > - subclass => ops.
> >
> > Changes in v4:
> > - ("arm64: defconfig: Update config names for i2c-hid rejigger") new for v4.
> > - Fully rejigger so ACPI and OF are full subclasses.
> > - Totally redid based on the new subclass system.
> >
> > Changes in v3:
> > - Fixed compatible in example.
> > - Removed Benjamin as a maintainer.
> > - Rework to use subclassing.
> > - Updated description.
> >
> > Changes in v2:
> > - ("dt-bindings: HID: i2c-hid: Introduce bindings for the Goodix GT7375P") new in v2.
> > - Get timings based on the compatible string.
> > - Use a separate compatible string for this new touchscreen.
> >
> > Douglas Anderson (4):
> >   HID: i2c-hid: Reorganize so ACPI and OF are separate modules
> >   arm64: defconfig: Update config names for i2c-hid rejigger
> >   dt-bindings: input: HID: i2c-hid: Introduce bindings for the Goodix
> >     GT7375P
> >   HID: i2c-hid: Introduce goodix-i2c-hid using i2c-hid core
>
> I think this series is ready to land.  The "defconfig" has a trivial
> conflict with commit 74b87103b3d0 ("arm64: defconfig: Enable HID
> multitouch") against linuxnext, but it's so simple that hopefully
> folks will be OK with that when it lands.
>
> Please let me know if there's anything else you need me to do.  :-)
>

I wanted to apply the series yesterday, but for these kinds of changes
I like giving it a spin on actual hardware. Turns out that my XPS-13
can not boot to v5.11-rc2, which makes testing the new branch slightly
more difficult.

I'll give it a spin next week, but I think I should be able to land it for 5.12.

Regarding the defconfig conflict, no worries, we can handle it with
Stephen and Linus.

Cheers,
Benjamin

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