Re: [PATCH V3 00/10] coresight: Move remaining AMBA ACPI devices into platform driver

[James Clark]

On 08/12/2023 05:39, Anshuman Khandual wrote:
> This moves remaining AMBA ACPI devices into respective platform drivers for
> enabling ACPI based power management support. This series applies on latest
> coresight/next branch. This series has been built, and boot tested on a DT
> based coresight platform. Although this still requires some more testing on
> ACPI based coresight platforms.
> 
> https://git.gitlab.arm.com/linux-arm/linux-anshuman.git (amba_other_acpi_migration_v3)
> 

Reviewed-by: James Clark <james.clark@xxxxxxx>

> Cc: Lorenzo Pieralisi <lpieralisi@xxxxxxxxxx>
> Cc: Sudeep Holla <sudeep.holla@xxxxxxx>
> Cc: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
> Cc: Mike Leach <mike.leach@xxxxxxxxxx>
> Cc: James Clark <james.clark@xxxxxxx>
> Cc: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>
> Cc: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx>
> Cc: linux-acpi@xxxxxxxxxxxxxxx
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Cc: coresight@xxxxxxxxxxxxxxxx
> Cc: linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
> 
> Changes in V3:
> 
> - 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@xxxxxxx/
> 
> - 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@xxxxxxx/
> 
> - 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@xxxxxxx/
> 
> Anshuman Khandual (10):
>   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  | 140 +++++++++++++---
>  drivers/hwtracing/coresight/coresight-catu.h  |   1 +
>  drivers/hwtracing/coresight/coresight-core.c  |  29 ++++
>  .../hwtracing/coresight/coresight-cpu-debug.c | 141 ++++++++++++++--
>  .../hwtracing/coresight/coresight-funnel.c    |  87 +++++-----
>  drivers/hwtracing/coresight/coresight-priv.h  |  10 ++
>  .../coresight/coresight-replicator.c          |  81 ++++-----
>  drivers/hwtracing/coresight/coresight-stm.c   | 115 +++++++++++--
>  .../hwtracing/coresight/coresight-tmc-core.c  | 156 +++++++++++++++---
>  drivers/hwtracing/coresight/coresight-tmc.h   |   2 +
>  drivers/hwtracing/coresight/coresight-tpiu.c  |  99 +++++++++--
>  include/linux/coresight.h                     |   7 +
>  13 files changed, 713 insertions(+), 163 deletions(-)
>