The current cppc acpi driver works with only one pcc subspace id.
It maintains and registers only one pcc channel even if the acpi table has
different pcc subspace ids.
As per ACPI 6.2 spec all PCC registers, for all processors in the same
performance domain (as defined by _PSD), must be defined to be in the same
subspace. The series tries to address the same by making cppc acpi driver
aware of multiple possible pcc subspace ids.
Patch 1 : In preparation to share the MAX_PCC_SUBSPACE definition with cppc acpi
driver
Patch 2 : Make the cppc acpi driver aware of multiple pcc subspace ids.
George Cherian (2):
mailbox: PCC: Move the MAX_PCC_SUBSPACES definition to header file
ACPI / CPPC: Make cppc acpi driver aware of pcc subspace ids
drivers/acpi/cppc_acpi.c | 179 +++++++++++++++++++++++++----------------------
drivers/mailbox/pcc.c | 1 -
include/acpi/pcc.h | 1 +
3 files changed, 97 insertions(+), 84 deletions(-)
--
2.7.4
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