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

Jiri Kosina
2025-01-09T09:14:38Z

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