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

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Message-ID: <830920o1-p118-5oq5-po4o-905n04949ro7@xreary.bet>
Date: Thu, 9 Jan 2025 10:14:35 +0100 (CET)
From: Jiri Kosina <jikos@...nel.org>
To: Even Xu <even.xu@...el.com>
cc: bentiss@...nel.org, corbet@....net, bagasdotme@...il.com, 
    aaron.ma@...onical.com, rdunlap@...radead.org, mpearson-lenovo@...ebb.ca, 
    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

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