Changes in util.c

5b05bb3f6c5716fab6911e12d60dd1f43ad9806a - Merge tag 'platform-drivers-x86-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Mon, 24 Aug 2026 19:16:35 +0200

Merge tag 'platform-drivers-x86-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86Pull 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 ... List of files: /linux/drivers/platform/x86/amd/pmf/util.c

5bda82c797c95a4f9c7f9eb38a3899b0ec5bc290 - platform/x86/amd/pmf: Implement util layer ioctl handler

Tue, 09 Jun 2026 10:10:42 +0200

platform/x86/amd/pmf: Implement util layer ioctl handlerImplement the ioctl handler for the util layer character device. Thissupport adds the actual functionality to populate PMF metrics from theTA shared memory buffer and return them to userspace.The implementation includes:- amd_pmf_populate_data() to extract metrics from TA shared memory- amd_pmf_set_ioctl() to handle userspace ioctl requests- Size negotiation for forward/backward compatibility- Feature-based population of struct fields- Export amd_pmf_get_ta_custom_bios_inputs()Co-developed-by: Sanket Goswami Signed-off-by: Sanket Goswami Signed-off-by: Shyam Sundar S K Link: https://patch.msgid.link/20260609081044.2416731-6-Shyam-sundar.S-k@amd.comReviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen List of files: /linux/drivers/platform/x86/amd/pmf/util.c

98432eec31803ae8707a9fd593ba64cd2648aa74 - platform/x86/amd/pmf: Add util layer and userspace character device interface

Tue, 09 Jun 2026 10:10:38 +0200

platform/x86/amd/pmf: Add util layer and userspace character device interfaceAdd a util layer to AMD PMF that exposes a minimal userspace interfacevia a character device for metrics monitoring and feature discovery.This creates /dev/amdpmf_interface with basic ioctl support to retrievePMF metrics such as:* Power source and power slider position* Platform type, lid state, and user presence* Skin temperature and ambient light* BIOS input parameters (1-10)* Graphics workload metrics* CPU C-state residency (average and maximum)* Socket power consumption* Auto Mode: Automatic power profile switching based on system activity* Static Power Slider: User-selectable power profiles* Policy Builder (Smart PC): Action based policy management* Dynamic Power Slider AC: Adaptive power profiles when on AC power* Dynamic Power Slider DC: Adaptive power profiles when on batteryThe interface enables smoother integration with userspace tools such asAMD SystemDeck [1], which is widely used for monitoring and controllingpower and thermal behavior on AMD platforms. These tools help designerskeep major components within thermal limits to ensure proper operationand enhance overall system stability and reliability.The feature is gated behind the CONFIG_AMD_PMF_UTIL_SUPPORT Kconfigoption, allowing it to be disabled if not needed. The implementationuses existing PMF infrastructure to populate data from the TA (TrustedApplication) shared memory buffer.Link: https://docs.amd.com/v/u/en-US/68773_0.50 [1]Co-developed-by: Sanket Goswami Signed-off-by: Sanket Goswami Signed-off-by: Shyam Sundar S K Link: https://patch.msgid.link/20260609081044.2416731-2-Shyam-sundar.S-k@amd.comReviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen List of files: /linux/drivers/platform/x86/amd/pmf/util.c