This series enables detection of ACPI based TRBE devices via a stand alone purpose built representative platform device. But as a pre-requisite this changes coresight_platform_data structure assignment for the TRBE device.
This series is based on v6.5-rc4 kernel, is also dependent on the following EDK2 changes posted earlier by Sami.
https://edk2.groups.io/g/devel/message/107239 https://edk2.groups.io/g/devel/message/107241
Changes in V4:
- Added in-code comment for arm_trbe_device_probe() - Reverted back using IS_ENABLED() for SPE PMU platform device - Replaced #ifdef with IS_ENABLED() for TRBE platform device - Protected arm_trbe_acpi_match with ACPI_PTR() - preventing a build failure when CONFIG_ACPI is not enabled - Added __maybe_unused for arm_acpi_register_pmu_device() and dropped config checks with IS_ENABLED()
Changes in V3:
https://lore.kernel.org/all/20230803055652.1322801-1-anshuman.khandual@arm.c...
- Changed ARMV8_TRBE_PDEV_NAME from "arm-trbe-acpi" into "arm,trbe" - Dropped local variable 'matched' - Replaced 'matched' with 'valid gsi' as being already matched once - Moved find_acpi_cpu_topology_hetero_id() outside conditional check
Changes in V2:
https://lore.kernel.org/all/20230801094052.750416-1-anshuman.khandual@arm.co...
- Refactored arm_spe_acpi_register_device() in a separate patch - Renamed trbe_acpi_resources as trbe_resources - Renamed trbe_acpi_dev as trbe_dev
Changes in V1:
https://lore.kernel.org/all/20230728112733.359620-1-anshuman.khandual@arm.co...
Cc: Sami Mujawar sami.mujawar@arm.com Cc: Catalin Marinas catalin.marinas@arm.com Cc: Will Deacon will@kernel.org Cc: Mark Rutland mark.rutland@arm.com Cc: Suzuki K Poulose suzuki.poulose@arm.com Cc: Mike Leach mike.leach@linaro.org Cc: Leo Yan leo.yan@linaro.org Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: James Clark james.clark@arm.com Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org
Anshuman Khandual (4): arm_pmu: acpi: Refactor arm_spe_acpi_register_device() arm_pmu: acpi: Add a representative platform device for TRBE coresight: trbe: Add a representative coresight_platform_data for TRBE coresight: trbe: Enable ACPI based TRBE devices
arch/arm64/include/asm/acpi.h | 3 + drivers/hwtracing/coresight/coresight-trbe.c | 26 +++- drivers/hwtracing/coresight/coresight-trbe.h | 2 + drivers/perf/arm_pmu_acpi.c | 138 +++++++++++++------ include/linux/perf/arm_pmu.h | 1 + 5 files changed, 128 insertions(+), 42 deletions(-)