Hi, This short series adds supports for ACPI Fixed Function Hardware(FFH) based Opregion that is being added(via Code First approach[1]) to ACPI v6.5 The first patch added ACPICA support for the same and must be routed via ACPICA project into the kernel and is part of the series just for the reference. The pull request is already sent there[2]. The second patch added a generic FFH OpRegion handler. Since handling of FFH OpRegion is very platform and the generic handlers just call the platform/ architecture specific callbacks for all the work. The last patch added the ARM64 specific callback which handles FFH OpRegion using arch specific SMC/HVC instructions using SMCCC. The specification can be found at [3]. [1] https://bugzilla.tianocore.org/show_bug.cgi?id=3598 [2] https://github.com/acpica/acpica/pull/782 [3] https://developer.arm.com/docs/den0048/latest Cc: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: Will Deacon <will@xxxxxxxxxx> Sudeep Holla (3): ACPICA: Add support for FFH Opregion special context data ACPI: Implement a generic FFH Opregion handler arm64: Add architecture specific ACPI FFH Opregion callbacks arch/arm64/kernel/acpi.c | 104 +++++++++++++++++++++++++++++++++ drivers/acpi/Kconfig | 10 ++++ drivers/acpi/Makefile | 1 + drivers/acpi/acpi_ffh.c | 55 +++++++++++++++++ drivers/acpi/acpica/evregion.c | 8 +++ drivers/acpi/acpica/exfield.c | 8 ++- drivers/acpi/acpica/exserial.c | 6 ++ drivers/acpi/bus.c | 6 ++ include/acpi/acconfig.h | 2 + include/acpi/actypes.h | 7 +++ include/linux/acpi.h | 7 +++ 11 files changed, 212 insertions(+), 2 deletions(-) create mode 100644 drivers/acpi/acpi_ffh.c -- 2.36.1
