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HID: touchscreen: add himax hid-over-spi driver

From:  Tylor Yang <tylor_yang-AT-himax.corp-partner.google.com>
To:  dmitry.torokhov-AT-gmail.com, robh+dt-AT-kernel.org, krzysztof.kozlowski+dt-AT-linaro.org, conor+dt-AT-kernel.org, jikos-AT-kernel.org, benjamin.tissoires-AT-redhat.com, linux-input-AT-vger.kernel.org, devicetree-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org
Subject:  [PATCH v3 0/4] HID: touchscreen: add himax hid-over-spi driver
Date:  Tue, 17 Oct 2023 17:18:56 +0800
Message-ID:  <20231017091900.801989-1-tylor_yang@himax.corp-partner.google.com>
Cc:  poyuan_chang-AT-himax.corp-partner.google.com, jingyliang-AT-chromium.org, hbarnor-AT-chromium.org, wuxy23-AT-lenovo.com, luolm1-AT-lenovo.com, poyu_hung-AT-himax.corp-partner.google.com, Tylor Yang <tylor_yang-AT-himax.corp-partner.google.com>
Archive-link:  Article

Hello,

This patch series adds the driver for Himax HID-over-SPI touchscreen ICs.
This driver takes a position in [1], it intends to take advantage of SPI
transfer speed and HID interface.

Patch 1 adds the Maintainer and devicetree bindings document for driver.

Patch 2-4 adds the driver itself, Kconfig and Makefiles. Due to server
could not receive patch >100000 chars, patch separate into 3 parts.

[1] Overview:
+--------------------------------+
| himax hid-over-spi TPIC driver |
+--------------------------------+
| +-----------+  +-----------+   |      +-----------+  +-----------+
| | Device #1 |  | Device #i |   |      | Device #j |  | Device #k |
| +-----------+  +-----------+   |      +-----------+  +-----------+
|          \\      //            |               \\      //
|        +------------+          |             +------------+
|        | I/O Driver |          |             | I/O Driver |
|        +------------+          |             +------------+
|              ||                |                   ||
|     +------------------+       |          +------------------+
|     | Transport Driver |       |          | Transport Driver |
|     +------------------+       |          +------------------+
|                      \___      |         ___/
+--------------------------------+       /
                            \           /
                          +----------------+
                          |    HID Core    |
                          +----------------+
                           /  |        |  \
                          /   |        |   \
             ____________/    |        |    \_________________
            /                 |        |                      \
           /                  |        |                       \
 +----------------+  +-----------+  +------------------+  +------------------+
 | Generic Driver |  | MT Driver |  | Custom Driver #1 |  | Custom Driver #2 |
 +----------------+  +-----------+  +------------------+  +------------------+

version 3 changes
-rename binding compatible from himax,hid-over-spi to himax,hid
-rename document himax,hid-over-spi.yaml to himax,hid.yaml
-rename binding properties himax,rst-gpio to reset
-remove binding properties himax,irq-gpio, himax3v3-gpio and himax,fw_in_flash.
-add binding properties vcca-power, vccd-power.
-add binding sub-node panel and move himax,pid into this one.
-HIMAX_DRIVER_VER update from 0.0.11 to 1.0.0
version 2 changes
-rename bindings name from himax,hid-over-hx-spi to himax,hid-over-spi
-remove "himax,fw_size", "himax,heatmap_16bits", "himax,fw_in_flash", "himax,pid"
 and "himax,boot_time_fw_upgrade" items from dt-bindings and related code
-add "himax,id-gpios" for user to specify hardware id pins
-rename "himax,ic_det_delay" to "himax,ic-det-delay-ms" and
 "himax,ic_resume_delay" to "himax,ic-resume-delay-ms"
-MAINTAINER position adjust: move info to the position by letter order
-Kconfig add HX_HID_HAS_FLASH option to replace "himax,fw_in_flash"
-HIMAX_DRIVER_VER upadte from 0.0.10 to 0.0.11
-remove unused includes and description in hx_hid.c
-add code to map id-gpios value to PID
-correct variable naming style and misspellings in hx_ic_core.c/h
-remove unnecessary global varaible debug_flag

Tylor Yang (4):
  dt-bindings: input: Introduce Himax HID-over-SPI device
  HID: touchscreen: Add initial support for Himax HID-over-SPI
  HID: touchscreen: Add initial support for Himax HID-over-SPI
  HID: touchscreen: Add initial support for Himax HID-over-SPI

 .../devicetree/bindings/input/himax,hid.yaml  |  123 +
 MAINTAINERS                                   |    7 +
 drivers/hid/Kconfig                           |    2 +
 drivers/hid/Makefile                          |    2 +
 drivers/hid/hx-hid/Kconfig                    |   43 +
 drivers/hid/hx-hid/Makefile                   |   35 +
 drivers/hid/hx-hid/hx_acpi.c                  |   81 +
 drivers/hid/hx-hid/hx_core.c                  | 1605 ++++++++
 drivers/hid/hx-hid/hx_core.h                  |  489 +++
 drivers/hid/hx-hid/hx_hid.c                   |  753 ++++
 drivers/hid/hx-hid/hx_hid.h                   |   96 +
 drivers/hid/hx-hid/hx_ic_83102j.c             |  340 ++
 drivers/hid/hx-hid/hx_ic_83102j.h             |   42 +
 drivers/hid/hx-hid/hx_ic_core.c               | 3260 +++++++++++++++++
 drivers/hid/hx-hid/hx_ic_core.h               |  792 ++++
 drivers/hid/hx-hid/hx_inspect.c               |  652 ++++
 drivers/hid/hx-hid/hx_inspect.h               |  104 +
 drivers/hid/hx-hid/hx_of.c                    |  214 ++
 drivers/hid/hx-hid/hx_plat.c                  |  502 +++
 drivers/hid/hx-hid/hx_plat.h                  |   30 +
 20 files changed, 9172 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/himax,hid.yaml
 create mode 100644 drivers/hid/hx-hid/Kconfig
 create mode 100644 drivers/hid/hx-hid/Makefile
 create mode 100644 drivers/hid/hx-hid/hx_acpi.c
 create mode 100644 drivers/hid/hx-hid/hx_core.c
 create mode 100644 drivers/hid/hx-hid/hx_core.h
 create mode 100644 drivers/hid/hx-hid/hx_hid.c
 create mode 100644 drivers/hid/hx-hid/hx_hid.h
 create mode 100644 drivers/hid/hx-hid/hx_ic_83102j.c
 create mode 100644 drivers/hid/hx-hid/hx_ic_83102j.h
 create mode 100644 drivers/hid/hx-hid/hx_ic_core.c
 create mode 100644 drivers/hid/hx-hid/hx_ic_core.h
 create mode 100644 drivers/hid/hx-hid/hx_inspect.c
 create mode 100644 drivers/hid/hx-hid/hx_inspect.h
 create mode 100644 drivers/hid/hx-hid/hx_of.c
 create mode 100644 drivers/hid/hx-hid/hx_plat.c
 create mode 100644 drivers/hid/hx-hid/hx_plat.h

-- 
2.25.1



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