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Message-ID:
 <TYCPR01MB8437933013EF8C39BFA080BE9897A@TYCPR01MB8437.jpnprd01.prod.outlook.com>
Date: Mon, 12 May 2025 14:33:33 +0800
From: Shengyu Qu <wiagn233@...look.com>
To: "Xu, Even" <even.xu@...el.com>, "jikos@...nel.org" <jikos@...nel.org>,
 "bentiss@...nel.org" <bentiss@...nel.org>, "corbet@....net"
 <corbet@....net>, "bagasdotme@...il.com" <bagasdotme@...il.com>,
 "Aaron, Ma" <aaron.ma@...onical.com>,
 "rdunlap@...radead.org" <rdunlap@...radead.org>,
 "mpearson-lenovo@...ebb.ca" <mpearson-lenovo@...ebb.ca>
Cc: wiagn233@...look.com,
 "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
 "Yue, Ling" <ling.yue@...el.com>
Subject: Re: [PATCH v4 00/22] Add Intel Touch Host Controller drivers

Hello Xu,

Any updates on this? It's been a month since your last reply.

Best regards,
Shengyu

在 2025/4/14 11:02, Xu, Even 写道:
> Hi, Shengyu,
> 
> Thanks for your feedback!
> 
> In fact, we have IPTS mode internal draft driver. It works fine and passes basic validation.
> But I was told that IPTS EDS (External-interface Definition Spec) is designed as a private spec, not be published yet.
> This IPTS EDS is only shared with OEMs under NDA.
> 
> So, first, from my perspective, I need to consult the company's legal department and discuss with them how to proceed with this case.
> 
> Will come back to you once I get any update on this.
> 
> Thanks!
> 
> Best Regards,
> Even Xu
> 
>> -----Original Message-----
>> From: Shengyu Qu <wiagn233@...look.com>
>> Sent: Thursday, April 10, 2025 10:02 AM
>> To: Xu, Even <even.xu@...el.com>; jikos@...nel.org; bentiss@...nel.org;
>> corbet@....net; bagasdotme@...il.com; Aaron, Ma
>> <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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