[PATCH 0/8] Add support for SCMIv4.0 Powercap Extensions

[Cristian Marussi]

Hi all,

SCMIv4.0 [1] introduces some new features and commands into the Powercap
protocol. In a nutshell, such protocol changes add support for:

 - setting multiple powercap limit/interval constraints for each SCMI
   powercap domain which supports multiple Concurrent Power Limit
 - enabling more Powercap commands to use Fastchannels mechanism
 - adding multiple constraints support to the existing notifications

After a bit of needed updates in the SCMI core this series adds:

- support for the idea of optional multiple Concurrent Power Limit (CPLs)
- support for the new FCs
- support for extended notifications
- enable usage of such multiple constraint in the ARM SCMI Powercap driver

Note that the public SCMIv4.0 spec at [1] is currently still ALPHA0, so
this series could anyway need some minor rework along the way and
definitely will need to wait for a final public release before being
possibly merged.

Tested in a mocked setup implementing the new protocol extensions.
Based on v6.17-rc1.

Thanks,
Cristian

[1]: https://developer.arm.com/documentation/den0056/f/?lang=en


Cristian Marussi (8):
  firmware: arm_scmi: Add an optional custom parameter to fastchannel
    helpers
  firmware: arm_scmi: Add bound iterators support
  firmware: arm_scmi: Refactor powercap domain layout
  firmware: arm_scmi: Add SCMIv4.0 Powercap basic support
  firmware: arm_scmi: Add SCMIv4.0 Powercap FCs support
  firmware: arm_scmi: Add SCMIV4.0 Powercap notifications support
  include: trace: Add new parameter to trace_scmi_fc_call
  powercap: arm_scmi: Enable multiple constraints support

 drivers/firmware/arm_scmi/driver.c    |  33 +-
 drivers/firmware/arm_scmi/perf.c      |  16 +-
 drivers/firmware/arm_scmi/powercap.c  | 843 ++++++++++++++++++++------
 drivers/firmware/arm_scmi/protocols.h |   8 +-
 drivers/powercap/arm_scmi_powercap.c  |  54 +-
 include/linux/scmi_protocol.h         |  78 ++-
 include/trace/events/scmi.h           |  10 +-
 7 files changed, 777 insertions(+), 265 deletions(-)

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2.47.0