kernel/git/stable/linux.git/drivers/platform/surface, branch master

Merge tag 'platform-drivers-x86-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

2026-08-24T17:16:35+00:00

Pull x86 platform driver updates from Ilpo Järvinen "Highlights: Major refactoring effort: stop setting acpi_device_name/class() and pnp.device_class to facilitate their eventual removal Many rollback/remove path fixes (presumably mostly found by AI) Miscellaneous cleanups / refactoring / improvements amd/halo: - Add Halo RGB LED driver amd/hsmp: - Properly serialize probe, remove, and data paths - Add support for protocol v7 used by Family 1AH Model 80H - Fix error checking corner cases (largely from AI review) - Reject negative power cap amd/pmc: - Improve behavior on platforms that do not support STB - Add T14 Gen2 AMD (20XL) to s2idle quirk list amd/pmf: - Add ioctl interface to retrieve device metrics - Add support for new metrics tables used by Family 1AH Model 80H qcom-hamoa-ec (arm64): - Reject short responses asus-nb-wmi: - Support ProArt key on ASUS ProArt PX13 asus-armoury: - Gate PPT writes behind active fan curve - Add power limits for more models dell-wmi-base: - Fix handling of ultra performance key dell-wmi-sysman: - Don't hex dump attribute security buffer hp-bioscfg: - Various fixes - Improve reduced ACPI packages support (necessary for HP EliteBook 840 G2) lg-laptop: - Fix LED resource handling - Add support for events used in newer models - Fix keyboard backlight support on LG Gram 16T90SP hp-wmi: - Generalize thermal params to board params - Manage CPU and GPU PWM independently - Add GPU MUX switch support - Add Victus 15-fb0xxx support - Add OMEN MAX 16-ak0xxx, OMEN 16-n0xxx, OMEN 16-wd0xxx, OMEN 16-wf0xxx, and OMEN board ID 8D88 support - Add OMEN Transcend 16-u0xxx support huawei: - Add support for Fn-lock ACPI interface found on newer Huawei laptops such as MateBook 14 2024 ISST: - Improve input validation (many fixes) - Disallow SST-CP (core-power) feature if perf profile add fails lenovo/yb9-kbdock: - Add driver for Yoga Book 9 14IAH10 lenovo/ymc: - Extend hinge switch query to support Yoga 9 2-in-1 14IPH11 - Prevent loading on Yoga Book 9 14IAH10 to avoid duplicated input nodes msi-ec: - Add MSI Raider A18 HX A9WJG and MSI Katana GF76 11UEK support msi-wmi: - Add MSI Claw M-Center keys support oxpec: - Add support for OneXPlayer X2 Mini Pro redmi-wmi: - Report kbd backlight cycle, OEM preset power mode, and FnLock toggle events to userspace samsung-galaxybook: - Add Samsung Galaxy Book6 Pro support thinkpad_acpi: - Add USB-C Security support uniwill-laptop: - Add keyboard backlight, AC auto boot, and USB powershare support - Add MACHENIKE L16 Pro, AiStone X4SP4NAL, and Avell A60 MUV support - Make lightbar max brightness configurable and add support for LAPQC71A/B" * tag 'platform-drivers-x86-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (152 commits) platform/x86: think-lmi: Fix current password length check platform/x86: redmi-wmi: report EC state change events MAINTAINERS: update Intel PMC Core maintainer contact platform/x86: oxpec: Add support for OneXPlayer X2 Mini Pro platform/x86: thinkpad_acpi: Fix fan speed reporting on Edge E330 platform/x86: msi-ec: Add MSI Katana GF76 11UEK EC firmware platform/x86: think-lmi: Fix certificate thumbprint sysfs output mlxbf-bootctl: fix the build error with FIELD_PREP() platform/x86: think-lmi: Free system certificate signatures platform/x86: ISST: Add a NULL check for sst_inst[] platform/x86: ISST: Return error during profile addition platform/x86: ISST: Just allow 2 bits for SST feature enable platform/x86: ISST: Use PP level enable mask platform/x86: ISST: Validate parameter for frequency and priority platform/x86: ISST: Validate parameter for core power state platform/x86: ISST: Validate max level for set feature platform/x86: ISST: Validate logical CPU id and clos id platform/x86: ISST: Validate level in perf mask ioctls platform/x86: ISST: Validate socket ID in clos_assoc ioctl platform/x86/amd/hsmp: Reject negative power cap writes in hwmon ...

platform/surface: gpe: add missing err.h include

2026-07-27T20:01:47+00:00

We now use PTR_ERR() and IS_ERR() in this module so pull in the header that provides them. Fixes: 1e0bd438b876 ("platform/surface: gpe: use platform_device_register_full()") Signed-off-by: Bartosz Golaszewski Acked-by: Ilpo Järvinen Link: https://patch.msgid.link/20260727144308.61842-1-bartosz.golaszewski@oss.qualcomm.com Signed-off-by: Danilo Krummrich

platform/surface: gpe: use platform_device_register_full()

2026-07-19T22:49:16+00:00

Creating a software node for a given set of properties and adding it to a platform device can be achieved with a single call to platform_device_register_full(). There's nothing in this driver that suggests using the more fine-grained interfaces was intentional so switch to using the high-level helper. Acked-by: Ilpo Järvinen Signed-off-by: Bartosz Golaszewski Link: https://patch.msgid.link/20260716-swnode-remove-on-dev-unreg-v8-2-5c2b8cc38c28@oss.qualcomm.com Signed-off-by: Danilo Krummrich

platform/surface: gpe: use platform_device_set_fwnode()

2026-07-10T14:07:09+00:00

Ahead of reworking the reference counting logic for platform devices, encapsulate the assignment of the firmware node for dynamically allocated platform devices with the provided helper. Acked-by: Ilpo Järvinen Reviewed-by: Andy Shevchenko Signed-off-by: Bartosz Golaszewski Link: https://patch.msgid.link/20260706-pdev-fwnode-ref-v3-16-1ff028e33779@oss.qualcomm.com Signed-off-by: Greg Kroah-Hartman

platform/surface: acpi-notify: Check ACPI companion before use

2026-07-10T13:36:55+00:00

Since every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), platform drivers that rely on the existence of a device's ACPI companion object should verify its presence. san_probe() dereferences the result of ACPI_COMPANION() when installing the GSBUS address space handler, so force-binding the driver to a device without an ACPI companion leads to a NULL pointer dereference. The dereference was introduced when the probe function was switched from ACPI_HANDLE() to ACPI_COMPANION(). Check the ACPI companion against NULL and return -ENODEV when it is missing, like commit e4865a56d013 ("ACPI: driver: Check ACPI_COMPANION() against NULL during probe") does for the core ACPI platform drivers. Fixes: a9e10e587304 ("ACPI: scan: Extend acpi_walk_dep_device_list()") Signed-off-by: Linmao Li Link: https://patch.msgid.link/20260706012512.524359-2-lilinmao@kylinos.cn Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/surface: surfacepro3_button: Stop setting acpi_device_name()

2026-07-09T13:44:05+00:00

The driver sets acpi_device_name() to initialize an input class device name initialization and print a message on probe success, but the input class device name can be set directly to the "Surface Pro 3/4 Buttons" string literal and used for printing the message. Make the driver do so, stop setting acpi_device_name() in it and drop the symbol specifically defined for this purpose. No intentional functional impact. This will facilitate the removal of device_name from struct acpi_device_pnp in the future. Signed-off-by: Rafael J. Wysocki Reviewed-by: Chen Yu Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/12927239.O9o76ZdvQC@rafael.j.wysocki Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/surface: aggregator: Consistently define ssam_device_ids using named initializers

2026-07-09T13:43:01+00:00

The .driver_data member of the the two struct ssam_device_id arrays were initialized by list expressions. This isn't easily readable if you don't work with the Surface System Aggregator core regularily. Using named initializers is more explicit and thus easier to parse and also more robust to changes of the struct definition. This robustness is relevant for a planned change to struct ssam_device_id replacing .driver_data by an anonymous union. This change doesn't introduce changes to the compiled ssam_device_id arrays. Signed-off-by: Uwe Kleine-König (The Capable Hub) Reviewed-by: Maximilian Luz Link: https://patch.msgid.link/4421c8c959452d8a717ebc7cc905ad9c2912680c.1781522576.git.u.kleine-koenig@baylibre.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/surface: SAM: Add support for Surface Pro 12in

2026-05-28T13:40:39+00:00

Add a SAM client device node group and registry entry for the Microsoft Surface Pro, 12-inch with Snapdragon. This set enables the use of the following devices. 1: cover keyboard 2: cover touchpad 3: pen stash events. The battery info and charger info devices have been purposefully omitted as they are also reported by other drivers and cause conflicts. Signed-off-by: Harrison Vanderbyl Link: https://patch.msgid.link/ab458aadea651396d9ea7629419a32dc7510c593.1778822464.git.harrison.vanderbyl@gmail.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/surface: surfacepro3_button: Check ACPI_COMPANION()

2026-05-19T13:51:07+00:00

Every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), so platform drivers that rely on the existence of a device's ACPI companion object need to verify its presence. Accordingly, add a requisite ACPI_COMPANION() check against NULL to the surfacepro3_button driver. Fixes: d913a5a12b40 ("platform/surface: surfacepro3_button: Convert to a platform driver") Signed-off-by: Rafael J. Wysocki Reviewed-by: Andy Shevchenko Reviewed-by: Chen Yu Link: https://patch.msgid.link/23119222.EfDdHjke4D@rafael.j.wysocki Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/surface: aggregator_registry: omit battery & AC nodes on Surface Laptop 7

2026-05-19T13:27:12+00:00

Surface Laptop 7 exposes battery and AC status via Qualcomm PMIC GLINK qcom_battmgr. Registering the standard SSAM battery and AC client devices on this platform causes duplicate power-supply devices to appear. Drop the SSAM battery and AC nodes from the Surface Laptop 7 registry group so that only the qcom_battmgr power supplies are instantiated. Fixes: b27622f13172 ("platform/surface: Add OF support") Signed-off-by: Oliver White Link: https://patch.msgid.link/20260409034347.17381-1-oliverjwhite07@gmail.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen