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Message-ID: <IA1PR11MB6098D25115BA7374C7843B6BF4062@IA1PR11MB6098.namprd11.prod.outlook.com>
Date: Thu, 19 Dec 2024 00:59:00 +0000
From: "Xu, Even" <even.xu@...el.com>
To: "Aaron, Ma" <aaron.ma@...onical.com>, "jikos@...nel.org"
<jikos@...nel.org>, "bentiss@...nel.org" <bentiss@...nel.org>,
"corbet@....net" <corbet@....net>, "bagasdotme@...il.com"
<bagasdotme@...il.com>, "rdunlap@...radead.org" <rdunlap@...radead.org>
CC: "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>
Subject: RE: [PATCH v3 00/22] Add Intel Touch Host Controller drivers
> -----Original Message-----
> From: Aaron Ma <aaron.ma@...onical.com>
> Sent: Tuesday, December 17, 2024 4:53 PM
> To: Xu, Even <even.xu@...el.com>; jikos@...nel.org; bentiss@...nel.org;
> corbet@....net; bagasdotme@...il.com; rdunlap@...radead.org
> Cc: linux-input@...r.kernel.org; linux-kernel@...r.kernel.org; linux-
> doc@...r.kernel.org
> Subject: Re: [PATCH v3 00/22] Add Intel Touch Host Controller drivers
>
>
>
> On 12/17/24 4:06 PM, Xu, Even wrote:
> >
> >> -----Original Message-----
> >> From: Aaron Ma <aaron.ma@...onical.com>
> >> Sent: Tuesday, December 17, 2024 3:33 PM
> >> To: Xu, Even <even.xu@...el.com>; jikos@...nel.org;
> >> bentiss@...nel.org; corbet@....net; bagasdotme@...il.com;
> >> rdunlap@...radead.org
> >> Cc: linux-input@...r.kernel.org; linux-kernel@...r.kernel.org; linux-
> >> doc@...r.kernel.org
> >> Subject: Re: [PATCH v3 00/22] Add Intel Touch Host Controller drivers
> >>
> >>
> >>
> >> On 12/17/24 2:58 PM, Xu, Even wrote:
> >>> Hi, Aaron,
> >>>
> >>> Thanks for testing!
> >>>
> >>> It’s not a driver error, it just means driver detected a touch
> >>> device error (Touch
> >> device report an unexpected RESET Response).
> >>>
> >>> I also met the same issue during test, it usually happens during
> >>> enumeration
> >> flow.
> >>>
> >>> If user keep touching the screen before/during driver do device
> >>> initialization, it
> >> will happen.
> >>>
> >>
> >> During the booting, no touching.
> >> It still repeats this error when driver is loading.
> >>
> >> After system bootup and in idle, every single touch will report this error.
> >>
> >> Aaron
> >
> > Interesting!
> > That's the new issue I never met.
> >
> > Is touch function abnormal (I mean the single touch)?
> >
>
> Touchscreen function works.
> One touch will cause 10 times of this error.
If touch function is normal, the possible reason is timing issue.
After one touch input packet was read by THC, Touch FW deasserted the interrupt line with a very short delay, which causes THC hardware read again, but Touch FW didn't have data report, so give an all Zero packet.
In HID-over-I2c protocol, the first two bytes be zero means device reset.
Just guess, need a device on hand to probe bus waveform for confirmation.
Best Regards,
Even Xu
>
> Aaron
>
> > Best Regards,
> > Even Xu
> >
> >>
> >>> In general, Touch devices will self recover from this error, it will
> >>> not impact
> >> normal touch function.
> >>>
> >>> Thanks!
> >>>
> >>> Best Regards,
> >>>
> >>> Even Xu
> >>>
> >>> *From:*Aaron Ma <aaron.ma@...onical.com>
> >>> *Sent:* Tuesday, December 17, 2024 2:47 PM
> >>> *To:* Xu, Even <even.xu@...el.com>; jikos@...nel.org;
> >>> bentiss@...nel.org; corbet@....net; bagasdotme@...il.com;
> >>> rdunlap@...radead.org
> >>> *Cc:* linux-input@...r.kernel.org; linux-kernel@...r.kernel.org;
> >>> linux-doc@...r.kernel.org
> >>> *Subject:* Re: [PATCH v3 00/22] Add Intel Touch Host Controller
> >>> drivers
> >>>
> >>> Hi Even,
> >>>
> >>> Tested on 6.13-rc3, there is an error repeated when using touchscreen:
> >>>
> >>> intel_quicki2c 0000:00:10.0: *unexpected DIR happen*
> >>>
> >>> The device info:
> >>> [ 3.013613] input: quicki2c-hid 27C6:012D Touchscreen as
> >>> /devices/pci0000:00/0000:00:10.0/000
> >>> 1:27C6:012D.0001/input/input6
> >>> [ 3.013763] input: quicki2c-hid 27C6:012D as
> >> /devices/pci0000:00/0000:00:10.0/0001:27C6:012D.
> >>> 0001/input/input7
> >>> [ 3.013894] hid-generic 0001:27C6:012D.0001: input,hidraw0:
> >>> <UNKNOWN> HID v8.65 Device [quick i2c-hid 27C6:012D] on
> >>>
> >>>
> >>> Aaron
> >>>
> >>> On 12/16/24 9:41 AM, 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, add industrial standard HID over SPI
> >>> protocol support
> >>>
> >>> (HIDSPI mode)
> >>>
> >>> - THC v3, for MTL, enhance HID over SPI mode
> >>>
> >>> - THC v4, for LNL, add inudstrial standard HID over I2C
> >>> protocol support
> >>>
> >>> (HIDI2C mode)
> >>>
> >>> Linux Surface community (https://github.com/linux-surface
> >>> <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:
> >>>
> >>> v3:
> >>>
> >>> - Change tables in documents from literal block to table format
> >>>
> >>> - Change symbol namespace to string literal according to patch:
> >>>
> >>> cdd30ebb1b9f ("module: Convert symbol namespace to string
> >>> literal")
> >>>
> >>> - Refine Kconfig description
> >>>
> >>> - Enhance Quickspi and Quicki2c driver by clearing THC hardware
> >>> interal
> >>>
> >>> 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 | 409 +++++
> >>>
> >>> .../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, 7953 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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