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

Xu, Even
2025-01-10T00:26:47Z

Thanks Jiri!

Best Regards,
Even Xu

> -----Original Message-----
> From: Jiri Kosina <jikos@kernel.org>
> Sent: Thursday, January 9, 2025 5:15 PM
> To: Xu, Even <even.xu@intel.com>
> Cc: bentiss@kernel.org; corbet@lwn.net; bagasdotme@gmail.com; Aaron, Ma
> <aaron.ma@canonical.com>; rdunlap@infradead.org; mpearson-
> lenovo@squebb.ca; 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
>
> On Mon, 6 Jan 2025, Even Xu wrote:
>
> > 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
>
> Now queued in hid.git#for-6.14/intel-thc.
>
> Thanks,
>
> --
> Jiri Kosina
> SUSE Labs