Merge branch 'acpi-processor'

* acpi-processor:
  ACPI / CPPC: Fix potential memory leak
  ACPI / CPPC: signedness bug in register_pcc_channel()
  ACPI: Allow selection of the ACPI processor driver for ARM64
  CPPC: Probe for CPPC tables for each ACPI Processor object
  ACPI: Add weak routines for ACPI CPU Hotplug
  ACPI / CPPC: Add a CPUFreq driver for use with CPPC
  ACPI: Introduce CPU performance controls using CPPC

1 files changed, 17 insertions, 3 deletions

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 706c2e95503f..25dbb76c02cc 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -206,11 +206,25 @@ config ACPI_PROCESSOR_IDLE
         bool
         select CPU_IDLE
 
+config ACPI_CPPC_LIB
+        bool
+        depends on ACPI_PROCESSOR
+        depends on !ACPI_CPU_FREQ_PSS
+        select MAILBOX
+        select PCC
+        help
+          If this option is enabled, this file implements common functionality
+          to parse CPPC tables as described in the ACPI 5.1+ spec. The
+          routines implemented are meant to be used by other
+          drivers to control CPU performance using CPPC semantics.
+          If your platform does not support CPPC in firmware,
+          leave this option disabled.
+
 config ACPI_PROCESSOR
         tristate "Processor"
-        depends on X86 || IA64
-        select ACPI_PROCESSOR_IDLE
-        select ACPI_CPU_FREQ_PSS
+        depends on X86 || IA64 || ARM64
+        select ACPI_PROCESSOR_IDLE if X86 || IA64
+        select ACPI_CPU_FREQ_PSS if X86 || IA64
         default y
         help
           This driver adds support for the ACPI Processor package. It is required