RE: [PATCH v4 00/22] Add Intel Touch Host Controller drivers

Xu, Even
2025-05-14T05:36:34Z

Hi, Shengyu,

Thanks for your email!

Yes, I checked that internally. So far, IPTS is still private, and doesn't have publish plan.
So I cannot publish IPTS related drivers.
Sorry.

Best Regards,
Even Xu

> -----Original Message-----
> From: Shengyu Qu <wiagn233@outlook.com>
> Sent: Monday, May 12, 2025 2:34 PM
> To: Xu, Even <even.xu@intel.com>; jikos@kernel.org; bentiss@kernel.org;
> corbet@lwn.net; bagasdotme@gmail.com; Aaron, Ma
> <aaron.ma@canonical.com>; rdunlap@infradead.org; mpearson-
> lenovo@squebb.ca
> Cc: wiagn233@outlook.com; linux-input@vger.kernel.org; linux-
> kernel@vger.kernel.org; linux-doc@vger.kernel.org; Yue, Ling
> <ling.yue@intel.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 private spec, not be published yet.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@outlook.com>
> >> Sent: Thursday, April 10, 2025 10:02 AM
> >> To: Xu, Even <even.xu@intel.com>; jikos@kernel.org;
> >> bentiss@kernel.org; corbet@lwn.net; bagasdotme@gmail.com; Aaron, Ma
> >> <aaron.ma@canonical.com>; rdunlap@infradead.org; mpearson-
> >> lenovo@squebb.ca
> >> Cc: wiagn233@outlook.com; linux-input@vger.kernel.org; linux-
> >> kernel@vger.kernel.org; linux-doc@vger.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
> >>>
> >