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Message-ID:
<TYCPR01MB84375C4CDCA3C55E1AB3BB2B98B72@TYCPR01MB8437.jpnprd01.prod.outlook.com>
Date: Thu, 10 Apr 2025 10:01:59 +0800
From: Shengyu Qu <wiagn233@...look.com>
To: Even Xu <even.xu@...el.com>, jikos@...nel.org, bentiss@...nel.org,
corbet@....net, bagasdotme@...il.com, aaron.ma@...onical.com,
rdunlap@...radead.org, mpearson-lenovo@...ebb.ca
Cc: wiagn233@...look.com, linux-input@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH v4 00/22] Add Intel Touch Host Controller drivers
Hello,
Can you also add previous version support for the THC IP? linux-surface
guys did a good job, but they are not full-time working on this, and
mainlining their downstream driver would take a long time.
Best regards,
Shengyu
在 2025/1/6 10:31, Even Xu 写道:
> Intel Touch Host Controller (THC) is a new high performance input IP
> which can benefit HID device's data transaction, such as touch screen,
> touch pad, stylus.
>
> THC IP now evoluates to V4, it can support 3 different modes: IPTS,
> HIDSPI and HIDI2C. Here are upgrade history:
> - THC v1, for TGL/LKF, supports intel private IPTS (Intel Precise Touch
> and Stylus) protocol ( IPTS mode)
> - THC v2, for ADL, adds industrial standard HID over SPI protocol
> support (HIDSPI mode)
> - THC v3, for MTL, enhances HID over SPI mode
> - THC v4, for LNL, adds inudstrial standard HID over I2C protocol
> support (HIDI2C mode)
>
> Linux Surface community (https://github.com/linux-surface) already
> implemented IPTS mode. These patch series provides THC HIDSPI mode and
> THC HIDI2C mode support on Linux.
>
> These patch series includes:
> 1. Document for THC hardware and software introduction.
> 2. Intel THC Hardware layer driver which provides control interfaces
> for protocol layer.
> 3. Intel QuickSPI (R) driver working as a HIDSPI device driver which
> implements HID over SPI protocol and flow.
> 4. Intel QuickI2C (R) driver working as a HIDI2C device driver which
> implements HID over I2C protocol and flow.
>
> Change logs:
> v4:
> - Minor fix in documents
> - Typo fixes in patch 6 & patch 7 commit descriptions
>
> v3:
> - Change tables in documents from literal block to table format
> - Change symbol namespace to string literal according to patch:
> commit cdd30ebb1b9f ("module: Convert symbol namespace to string literal")
> - Refine Kconfig description
> - Enhance Quickspi and Quicki2c driver by clearing THC hardware internal
> state before doing initialization to avoid BIOS impacts.
> - A fix in Quicki2c driver when does set_report
>
> v2:
> - Fix document format issues
> - Add THC device IDs for Intel Panther Lake (PTL) platform
>
> Even Xu (13):
> HID: THC: Add documentation
> HID: intel-thc-hid: intel-thc: Add THC DMA interfaces
> HID: intel-thc-hid: intel-thc: Add THC I2C config interfaces
> HID: intel-thc-hid: intel-quickspi: Add THC QuickSPI driver hid layer
> HID: intel-thc-hid: intel-quickspi: Add THC QuickSPI ACPI interfaces
> HID: intel-thc-hid: intel-quickspi: Add HIDSPI protocol implementation
> HID: intel-thc-hid: intel-quickspi: Add PM implementation
> HID: intel-thc-hid: intel-quicki2c: Add THC QuickI2C driver skeleton
> HID: intel-thc-hid: intel-quicki2c: Add THC QuickI2C driver hid layer
> HID: intel-thc-hid: intel-quicki2c: Add THC QuickI2C ACPI interfaces
> HID: intel-thc-hid: intel-quicki2c: Add HIDI2C protocol implementation
> HID: intel-thc-hid: intel-quicki2c: Complete THC QuickI2C driver
> HID: intel-thc-hid: intel-quicki2c: Add PM implementation
>
> Xinpeng Sun (9):
> HID: intel-thc-hid: Add basic THC driver skeleton
> HID: intel-thc-hid: intel-thc: Add THC registers definition
> HID: intel-thc-hid: intel-thc: Add THC PIO operation APIs
> HID: intel-thc-hid: intel-thc: Add APIs for interrupt
> HID: intel-thc-hid: intel-thc: Add THC LTR interfaces
> HID: intel-thc-hid: intel-thc: Add THC interrupt handler
> HID: intel-thc-hid: intel-thc: Add THC SPI config interfaces
> HID: intel-thc-hid: intel-quickspi: Add THC QuickSPI driver skeleton
> HID: intel-thc-hid: intel-quickspi: Complete THC QuickSPI driver
>
> Documentation/hid/index.rst | 1 +
> Documentation/hid/intel-thc-hid.rst | 568 ++++++
> MAINTAINERS | 6 +
> drivers/hid/Kconfig | 2 +
> drivers/hid/Makefile | 2 +
> drivers/hid/intel-thc-hid/Kconfig | 42 +
> drivers/hid/intel-thc-hid/Makefile | 22 +
> .../intel-quicki2c/pci-quicki2c.c | 966 ++++++++++
> .../intel-quicki2c/quicki2c-dev.h | 186 ++
> .../intel-quicki2c/quicki2c-hid.c | 166 ++
> .../intel-quicki2c/quicki2c-hid.h | 14 +
> .../intel-quicki2c/quicki2c-protocol.c | 224 +++
> .../intel-quicki2c/quicki2c-protocol.h | 20 +
> .../intel-quickspi/pci-quickspi.c | 987 +++++++++++
> .../intel-quickspi/quickspi-dev.h | 172 ++
> .../intel-quickspi/quickspi-hid.c | 165 ++
> .../intel-quickspi/quickspi-hid.h | 14 +
> .../intel-quickspi/quickspi-protocol.c | 414 +++++
> .../intel-quickspi/quickspi-protocol.h | 25 +
> .../intel-thc-hid/intel-thc/intel-thc-dev.c | 1578 +++++++++++++++++
> .../intel-thc-hid/intel-thc/intel-thc-dev.h | 116 ++
> .../intel-thc-hid/intel-thc/intel-thc-dma.c | 969 ++++++++++
> .../intel-thc-hid/intel-thc/intel-thc-dma.h | 146 ++
> .../intel-thc-hid/intel-thc/intel-thc-hw.h | 881 +++++++++
> include/linux/hid-over-i2c.h | 117 ++
> include/linux/hid-over-spi.h | 155 ++
> 26 files changed, 7958 insertions(+)
> create mode 100644 Documentation/hid/intel-thc-hid.rst
> create mode 100644 drivers/hid/intel-thc-hid/Kconfig
> create mode 100644 drivers/hid/intel-thc-hid/Makefile
> create mode 100644 drivers/hid/intel-thc-hid/intel-quicki2c/pci-quicki2c.c
> create mode 100644 drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-dev.h
> create mode 100644 drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-hid.c
> create mode 100644 drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-hid.h
> create mode 100644 drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-protocol.c
> create mode 100644 drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-protocol.h
> create mode 100644 drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c
> create mode 100644 drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h
> create mode 100644 drivers/hid/intel-thc-hid/intel-quickspi/quickspi-hid.c
> create mode 100644 drivers/hid/intel-thc-hid/intel-quickspi/quickspi-hid.h
> create mode 100644 drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.c
> create mode 100644 drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.h
> create mode 100644 drivers/hid/intel-thc-hid/intel-thc/intel-thc-dev.c
> create mode 100644 drivers/hid/intel-thc-hid/intel-thc/intel-thc-dev.h
> create mode 100644 drivers/hid/intel-thc-hid/intel-thc/intel-thc-dma.c
> create mode 100644 drivers/hid/intel-thc-hid/intel-thc/intel-thc-dma.h
> create mode 100644 drivers/hid/intel-thc-hid/intel-thc/intel-thc-hw.h
> create mode 100644 include/linux/hid-over-i2c.h
> create mode 100644 include/linux/hid-over-spi.h
>
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