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| author | Sudeep Holla <sudeep.holla@arm.com> | 2021-12-22 17:32:54 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-12-27 17:01:28 +0100 |
| commit | 0acf24ad7e10f547809faefb8069f8f5482eb4d9 (patch) | |
| tree | d5d1bc9c363a694a46a6a0874f507fc034748f6f /drivers/acpi/acpica | |
| parent | 9a3b8655db1ada31c82189ae13f40eb25da48c35 (diff) | |
| download | linux-0acf24ad7e10f547809faefb8069f8f5482eb4d9.tar.bz2 | |
ACPICA: Add support for PCC Opregion special context data
ACPICA commit 55526e8a6133cbf5a9cc0fb75a95dbbac6eb98e6
PCC Opregion added in ACPIC 6.3 requires special context data similar
to GPIO and Generic Serial Bus as it needs to know the internal PCC
buffer and its length as well as the PCC channel index when the opregion
handler is being executed by the OSPM.
Lets add support for the special context data needed by PCC Opregion.
Link: https://github.com/acpica/acpica/commit/55526e8a
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica')
| -rw-r--r-- | drivers/acpi/acpica/evregion.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c index 4ef43c8ef5e7..80b68f216b46 100644 --- a/drivers/acpi/acpica/evregion.c +++ b/drivers/acpi/acpica/evregion.c @@ -162,6 +162,16 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, return_ACPI_STATUS(AE_NOT_EXIST); } + if (region_obj->region.space_id == ACPI_ADR_SPACE_PLATFORM_COMM) { + struct acpi_pcc_info *ctx = + handler_desc->address_space.context; + + ctx->internal_buffer = + field_obj->field.internal_pcc_buffer; + ctx->length = region_obj->region.length; + ctx->subspace_id = region_obj->region.address; + } + /* * We must exit the interpreter because the region setup will * potentially execute control methods (for example, the _REG method |