[ooaklee]

Summary

• re-lift protocol-9 QSPI support onto the current 7.2.2 GPI and GENI SPI drivers
• add an OF-only direct-input driver and binding for the Surface Pro 11 MSHW0485 touchscreen
• add the Denali QSPI DMA/controller/touch nodes for both supported SP11 variants
• keep pen and every experimental userspace ABI out of this topic

Dependency and status

Review/merge after #82, the Denali DT baseline topic. This branch is nevertheless based directly on jg/ubuntu-qcom-x1e-7.2.y at 032e174490d2, so the shared-driver diff remains independently reviewable.

This is the release-line QSPI/touch extraction planned after the working staging correction in merged #81. It does not replay #81 or the staging branch's complete driver files. The PR remains a draft until this exact re-lift has been installed and tested on Surface Pro 11 hardware.

The default-off pen/HIDRAW/heat-frame work will follow as a separate, explicitly gated topic and is not present here.

Containment

• GPI changes activate only for QCOM_GPI_QSPI; the existing SPI, I2C, and UART protocols are unchanged
• GENI QSPI mode requires both the qcom,geni-qspi controller property and the microsoft,denali root compatible
• the touch driver binds only through OF compatible microsoft,mshw0485 and rejects non-Denali machines
• there is no ACPI match, SPI-ID fallback, module parameter, diagnostic sysfs attribute, misc device, HIDRAW endpoint, pen input, or /dev/g6ts-heat
• the direct-touch binding and nodes describe only the fixed power/reset/interrupt wiring used on Denali

The current release base already contains DMA_PRIVATE and the GENI SPI tracepoints. This series preserves them and creates no intentional diff for either facility.

Provenance

The series keeps original authors where the source has a valid author sign-off:

• x1e-nixos <noreply@scug.io> remains author of the QSPI DMA binding and current-tree GPI re-lift, derived from 19bed4c3b6c1
• the GENI SPI change is a substantial current-tree re-lift authored and signed by Leon, with source credit to 65ce06ca2b00 and the final staging behavior in b1075e60d0b1; the older SPI source has no author DCO trailer, so none was invented
• the direct touch core is a focused rewrite of the final phase55 behavior; the invalid placeholder author from that staging commit is not propagated
• Justin White remains author of the X1P product-ID follow-up from 3fc7c5249f4a, with his original author date and sign-off preserved

Leon signs each rewritten/submitted commit as Leon Silcott <leon@boasi.io>.

Validation

• git diff --check 032e174490d2..HEAD
• strict checkpatch in Linux with python3-ply: no errors or checks; only the generic new-file/MAINTAINERS prompt for the new binding and driver, both already covered by the existing INPUT (KEYBOARD, MOUSE, JOYSTICK, TOUCHSCREEN) DRIVERS entry
• strict checkpatch with only that accounted FILE_PATH_CHANGES warning suppressed: no errors, warnings, or checks
• ARM64 ubuntu_x1e_defconfig W=1 builds of drivers/dma/qcom/gpi.o, drivers/spi/spi-geni-qcom.o, and drivers/input/touchscreen/mshw0485_touch.o
• DT binding/schema validation and yamllint for the new/updated schemas
• qcom/x1e80100-microsoft-denali-oled.dtb builds and passes the selected checks
• qcom/x1p64100-microsoft-denali.dtb builds and passes the selected checks
• non-SP11 qcom/x1e80100-dell-xps13-9345.dtb builds successfully
• source audit confirms DMA_PRIVATE and all existing GENI tracepoints remain intact
• ABI audit confirms the touch core exposes none of the deferred pen/diagnostic interfaces

Hardware checks still required

• boot this exact branch on an X1E or X1P Surface Pro 11
• verify QSPI GPI descriptor mode and MSHW0485 initialization in the boot log
• verify multitouch input, suspend/resume, and repeated touch-controller resets
• verify a non-SP11 X1E system still boots with its normal GENI SPI/GPI paths; the Dell DTB build above is the available compile-time guard, not a hardware claim

[ooaklee]

Follow-up validation for the SP11 7.2.2 retrospective:

• This PR head is now 4c9324a851a8.
• The follow-up publishes the complete 64-bit Denali QSPI event-ring doorbell before channel activation; the completion workarounds remain scoped through microsoft,denali, in line with the PR SP11: integrate 7.2.x platform, IPTS pen, audio, camera, and power support #79 guardrail.
• The combined demonstration target (sp11/ubuntu-qcom-x1e-7.2.y-target, b807d9e52ac9) and retrospective branch (sp11/ubuntu-qcom-x1e-7.2.y-target-fix-pt-2, dd928de48c03) include this change.
• A clean Lexr container build from the pushed retrospective branch completed successfully as 7.2.2-jg-0sp11v2-qcom-x1e; both Denali DTBs and drivers/dma/qcom/gpi.ko.zst are present in the resulting bundle.

This is build/package validation. Touch and pen still require a physical boot/resume test on the Surface Pro 11.

[ooaklee]

Withdrawing this older 7.2.2-era submission version without merging while we continue qualification of the repaired 7.2.5 source on the fork. Current source/dependency review is tracked in ooaklee/linux_ms_dev_kit-sp11#51, ooaklee/linux_ms_dev_kit-sp11#61 and the combined candidate ooaklee/linux_ms_dev_kit-sp11#68. These are review vehicles, not an upstream-ready replacement or proof of equivalence to this old PR head.

The current combined source is 8ba2b75713feb5c72bbc11dd8cce4048e23cdeea, ABI 7.2.5-jg-0sp11v8-qcom-x1e; see the experimental v8 release. Ordinary-use results on one X1E/OLED unit are recorded, but the release remains experimental and the detailed hardware, lifecycle, deviation, CI and provenance gates in ooaklee/linux_ms_dev_kit-sp11#68 remain open.

This PR's branch and exact head 4c9324a851a8, authored history, discussion and test evidence are retained unchanged. Closing is administrative supersession, not a merge, an acceptance decision, or a claim that the old and current trees are identical. Beta and the repository default are unchanged.

The two additional deferred GPI corrections are explicitly deferred, not removed from an accepted fix list. V8's existing working GPI/touch implementation remains intact; the known residual risks and separate width-cast disposition are not waived.

The inherited QSPI/GENI/touch and opt-in pen-ABI prerequisites are carried by ooaklee/linux_ms_dev_kit-sp11#51. ooaklee/linux_ms_dev_kit-sp11#61 covers an additional GPI ordering port only; it does not replace the complete touch/pen series.

Fresh focused upstream submissions will preserve the contributing authors, source links and dependencies after exact combined acceptance and the appropriate shared-driver checks. Fork-only integration scripts/workflows and repository policy will be excluded. PR #79 remains open as the maintainer's coordination/provenance thread.