linux-kernel - Re: [PATCH v9 0/4] HID: i2c-hid: Reorganize to allow supporting goodix,gt7375p

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Date:   Mon, 18 Jan 2021 17:30:47 +0100
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     Jiri Kosina <jkosina@...e.cz>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Stephen Boyd <swboyd@...omium.org>,
        "open list:HID CORE LAYER" <linux-input@...r.kernel.org>,
        Hans De Goede <hdegoede@...hat.com>,
        Andrea Borgia <andrea@...gia.bo.it>,
        Kai Heng Feng <kai.heng.feng@...onical.com>,
        Rob Herring <robh+dt@...nel.org>,
        Anson Huang <Anson.Huang@....com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Coiby Xu <coiby.xu@...il.com>,
        Daniel Playfair Cal <daniel.playfair.cal@...il.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Guido Günther <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>,
        Shawn Guo <shawnguo@...nel.org>, Vinod Koul <vkoul@...nel.org>,
        Will Deacon <will@...nel.org>,
        DTML <devicetree@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v9 0/4] HID: i2c-hid: Reorganize to allow supporting goodix,gt7375p

On Fri, Jan 15, 2021 at 6:07 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 v9:
> - 120 ms delay => 180 ms delay
> - Local variable in ACPI code "ihid_of" => "ihid_acpi".
> - Squash Benjamin's change for ACPI power on.
>
> 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
>
>  .../bindings/input/goodix,gt7375p.yaml        |  65 +++++
>  arch/arm64/configs/defconfig                  |   3 +-
>  drivers/hid/Makefile                          |   2 +-
>  drivers/hid/i2c-hid/Kconfig                   |  47 +++-
>  drivers/hid/i2c-hid/Makefile                  |   6 +-
>  drivers/hid/i2c-hid/i2c-hid-acpi.c            | 143 ++++++++++
>  drivers/hid/i2c-hid/i2c-hid-core.c            | 252 +++---------------
>  drivers/hid/i2c-hid/i2c-hid-of-goodix.c       | 116 ++++++++
>  drivers/hid/i2c-hid/i2c-hid-of.c              | 143 ++++++++++
>  drivers/hid/i2c-hid/i2c-hid.h                 |  22 ++
>  include/linux/platform_data/i2c-hid.h         |  41 ---
>  11 files changed, 578 insertions(+), 262 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/input/goodix,gt7375p.yaml
>  create mode 100644 drivers/hid/i2c-hid/i2c-hid-acpi.c
>  create mode 100644 drivers/hid/i2c-hid/i2c-hid-of-goodix.c
>  create mode 100644 drivers/hid/i2c-hid/i2c-hid-of.c
>  delete mode 100644 include/linux/platform_data/i2c-hid.h
>

Many thanks for the wait. I have now scheduled this series in for-5.12/i2c-hid.

Cheers,
Benjamin