[0/3] ACPI: Add support for PCC Operation Region

Message

Sudeep Holla Nov. 2, 2021, 6:25 p.m. UTC

Hi,

This series adds support for ACPI PCC OpRegion added in ACPI 6.3
I understand that the ACPICA changes need to go via different route,
but I am posting it together to give complete narative/picture for
the review/discussion.

Regards,
Sudeep

Sudeep Holla (3):
  ACPICA: Fix wrong interpretation of PCC address
  ACPICA: Add support for PCC Opregion special context data
  ACPI: PCC: Implement OperationRegion handler for the PCC Type 3 subtype

 drivers/acpi/Kconfig           |   5 ++
 drivers/acpi/Makefile          |   1 +
 drivers/acpi/acpica/evregion.c |  11 ++++
 drivers/acpi/acpica/exfield.c  |   7 +--
 drivers/acpi/bus.c             |   1 +
 drivers/acpi/pcc_opregion.c    | 111 +++++++++++++++++++++++++++++++++
 include/acpi/actypes.h         |   8 +++
 include/linux/acpi.h           |   6 ++
 8 files changed, 144 insertions(+), 6 deletions(-)
 create mode 100644 drivers/acpi/pcc_opregion.c

--
2.25.1

Comments

Rafael J. Wysocki Nov. 5, 2021, 2:58 p.m. UTC | #1

Hi Sudeep,

On Tue, Nov 2, 2021 at 7:26 PM Sudeep Holla <[e-mail]> wrote:
>
> Hi,
>
> This series adds support for ACPI PCC OpRegion added in ACPI 6.3
> I understand that the ACPICA changes need to go via different route,
> but I am posting it together to give complete narative/picture for
> the review/discussion.
>
> Regards,
> Sudeep
>
> Sudeep Holla (3):
>   ACPICA: Fix wrong interpretation of PCC address
>   ACPICA: Add support for PCC Opregion special context data

The above two need to be submitted to the upstream project via GitHub
at https://github.com/acpica/acpica

The will be applicable to the Linux code base only after they have
been accepted by the upstream.

>   ACPI: PCC: Implement OperationRegion handler for the PCC Type 3 subtype

And this one will be applied when the above happens.

Thanks!

Sudeep Holla Nov. 22, 2021, 5:59 p.m. UTC | #2

Hi Rafael,


Thanks for the response, sorry for the delay as I was away.

On Fri, Nov 05, 2021 at 03:58:14PM +0100, Rafael J. Wysocki wrote:
> Hi Sudeep,
> 
> On Tue, Nov 2, 2021 at 7:26 PM Sudeep Holla <[e-mail]> wrote:
> >
> > Hi,
> >
> > This series adds support for ACPI PCC OpRegion added in ACPI 6.3
> > I understand that the ACPICA changes need to go via different route,
> > but I am posting it together to give complete narative/picture for
> > the review/discussion.
> >
> > Regards,
> > Sudeep
> >
> > Sudeep Holla (3):
> >   ACPICA: Fix wrong interpretation of PCC address
> >   ACPICA: Add support for PCC Opregion special context data
> 
> The above two need to be submitted to the upstream project via GitHub
> at https://github.com/acpica/acpica
> 

Thanks for the info, I had a rough idea but posted these for reference here
anyways.

> The will be applicable to the Linux code base only after they have
> been accepted by the upstream.
>

Sure, I have now sent the pull request(https://github.com/acpica/acpica/pull/735)

> >   ACPI: PCC: Implement OperationRegion handler for the PCC Type 3 subtype
> 
> And this one will be applied when the above happens.
>

Make sense.