This moves remaining AMBA ACPI devices into respective platform drivers for enabling ACPI based power management support. This series applies on latest coresight next. This series has been built, and boot tested on a DT based (RB5) and ACPI supported coresight platform (N1SDP).
https://git.gitlab.arm.com/linux-arm/linux-anshuman.git (amba_other_acpi_migration_v6)
Cc: Lorenzo Pieralisi lpieralisi@kernel.org Cc: Sudeep Holla sudeep.holla@arm.com Cc: Suzuki K Poulose suzuki.poulose@arm.com Cc: Mike Leach mike.leach@linaro.org Cc: James Clark james.clark@arm.com Cc: Maxime Coquelin mcoquelin.stm32@gmail.com Cc: Alexandre Torgue alexandre.torgue@foss.st.com Cc: linux-acpi@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: coresight@lists.linaro.org Cc: linux-stm32@st-md-mailman.stormreply.com
Changes in V6:
- Dropped Jame's RB tag from [PATCH 3/11] - Added clk_disable_unprepare() for pclk in replicator_probe() error path - Added clk_disable_unprepare() for pclk in funnel_probe() error path - Added clk_put() for pclk in catu_platform_probe() error path - Added clk_put() for pclk in debug_platform_probe() error path - Added WARN_ON(!drvdata) check in replicator_platform_remove() - Added WARN_ON(!drvdata) check in funnel_platform_remove() - Added WARN_ON(!drvdata) check in catu_platform_remove() - Added WARN_ON(!drvdata) check in tpiu_platform_remove() - Added WARN_ON(!drvdata) check in tmc_platform_remove() - Added WARN_ON(!drvdata) check in stm_platform_remove() - Added WARN_ON(!drvdata) check in debug_platform_remove() - Added additional elements for all acpi_device_id[] updates
Changes in V5:
https://lore.kernel.org/all/20240222082142.3663983-1-anshuman.khandual@arm.c...
- Used table->mask to filter out bits from pid in coresight_get_uci_data_from_amba() - Dropped custom masks such as STM_AMBA_MASK and TMC_AMBA_MASK - Modified tmc_etr_setup_caps() to accept struct csdev_access argument - Reverted back tmc_etr_setup_caps() call site position in tmc_probe() - Changed replicator and funnel devices to use the new helpers earlier in series - Updated the commit messages regarding xxx_probe() refactoring and renaming
Changes in V4:
https://lore.kernel.org/all/20240123054608.1790189-1-anshuman.khandual@arm.c...
- Fixed PM imbalance in etm4_probe() error path with pm_runtime_disable() - Restored back the pm_runtime_disable() on platform probe error paths in replicator, funnel, catu, tpiu, tmc and stm devices - Dropped dev_caps argument from __tmc_probe() - Changed xxxx_platform_remove() for platform_driver->remove_new() callback
Changes in V3:
https://lore.kernel.org/all/20231208053939.42901-1-anshuman.khandual@arm.com...
- Split coresight_init_driver/remove_driver() helpers into a separate patch - Added 'drvdata->pclk' comments in replicator, funnel, tpiu, tmc, and stm devices - Updated funnel, and replicator drivers to use these new helpers - Check for drvdata instead of drvdata->pclk in suspend and resume paths in catu, tmc and debug devices - Added patch to extract device name from AMBA pid based table lookup for stm - Added patch to extract device properties from AMBA pid based table look for tmc - Dropped pm_runtime_put() from common __probe() functions - Handled pm_runtime_put() in AMBA driver in success path - Handled pm_runtime_put() in platform driver in both success and error paths
Changes in V2:
https://lore.kernel.org/all/20231201062053.1268492-1-anshuman.khandual@arm.c...
- Dropped redundant devm_ioremap_resource() hunk from tmc_platform_probe() - Defined coresight_[init|remove]_driver() for both AMBA/platform drivers - Changed catu, tmc, tpiu, stm and debug coresight drivers to use the new helpers avoiding build issues arising from module_amba_driver(), and module_platform_driver() being on the same file
Changes in V1:
https://lore.kernel.org/all/20231027072943.3418997-1-anshuman.khandual@arm.c...
- Replaced all IS_ERR() instances with IS_ERR_OR_NULL() as per Suzuki
Changes in RFC:
https://lore.kernel.org/all/20230921042040.1334641-1-anshuman.khandual@arm.c...
Anshuman Khandual (11): coresight: etm4x: Fix unbalanced pm_runtime_enable() coresight: stm: Extract device name from AMBA pid based table lookup coresight: tmc: Extract device properties from AMBA pid based table lookup coresight: Add helpers registering/removing both AMBA and platform drivers coresight: replicator: Move ACPI support from AMBA driver to platform driver coresight: funnel: Move ACPI support from AMBA driver to platform driver coresight: catu: Move ACPI support from AMBA driver to platform driver coresight: tpiu: Move ACPI support from AMBA driver to platform driver coresight: tmc: Move ACPI support from AMBA driver to platform driver coresight: stm: Move ACPI support from AMBA driver to platform driver coresight: debug: Move ACPI support from AMBA driver to platform driver
drivers/acpi/arm64/amba.c | 8 - drivers/hwtracing/coresight/coresight-catu.c | 146 ++++++++++++++--- drivers/hwtracing/coresight/coresight-catu.h | 1 + drivers/hwtracing/coresight/coresight-core.c | 29 ++++ .../hwtracing/coresight/coresight-cpu-debug.c | 146 ++++++++++++++--- .../coresight/coresight-etm4x-core.c | 3 + .../hwtracing/coresight/coresight-funnel.c | 87 +++++----- drivers/hwtracing/coresight/coresight-priv.h | 10 ++ .../coresight/coresight-replicator.c | 82 +++++----- drivers/hwtracing/coresight/coresight-stm.c | 116 +++++++++++-- .../hwtracing/coresight/coresight-tmc-core.c | 154 +++++++++++++++--- drivers/hwtracing/coresight/coresight-tmc.h | 2 + drivers/hwtracing/coresight/coresight-tpiu.c | 103 ++++++++++-- include/linux/coresight.h | 7 + 14 files changed, 729 insertions(+), 165 deletions(-)