[PATCH V4 0/4] coresight: trbe: Enable ACPI based devices

Anshuman Khandual
2023-08-08T08:23:30Z

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.com/

- 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.com/

- 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.com/

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(-)

--
2.25.1