linux-kernel - [PATCH v8 0/4] HID: i2c-hid: Reorganize to allow supporting goodix,gt7375p

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Date:   Fri, 11 Dec 2020 14:24:44 -0800
From:   Douglas Anderson <dianders@...omium.org>
To:     jkosina@...e.cz, benjamin.tissoires@...hat.com,
        gregkh@...uxfoundation.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     hdegoede@...hat.com, linux-input@...r.kernel.org,
        kai.heng.feng@...onical.com, robh+dt@...nel.org,
        swboyd@...omium.org, andrea@...gia.bo.it,
        Douglas Anderson <dianders@...omium.org>,
        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 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>,
        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>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v8 0/4] HID: i2c-hid: Reorganize to allow supporting goodix,gt7375p


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

 .../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            | 159 +++++++++++
 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, 594 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

-- 
2.29.2.576.ga3fc446d84-goog