In P9, OCC (On-Chip-Controller) supports shared memory based commad-response interface. Within the shared memory there is an OPAL command buffer and OCC response buffer that can be used to send inband commands to OCC. The following commands are supported:
1) Set system powercap 2) Set CPU-GPU power shifting ratio 3) Clear min/max for OCC sensor groups Changes from V9: - Fixed return after erroring from mutex_lock_interruptible() - Added documentation Shilpasri G Bhat (3): powernv: powercap: Add support for powercap framework powernv: Add support to set power-shifting-ratio powernv: Add support to clear sensor groups data .../ABI/testing/sysfs-firmware-opal-powercap | 31 +++ Documentation/ABI/testing/sysfs-firmware-opal-psr | 18 ++ .../bindings/powerpc/opal/sensor-groups.txt | 23 ++ arch/powerpc/include/asm/opal-api.h | 8 +- arch/powerpc/include/asm/opal.h | 9 + arch/powerpc/include/uapi/asm/opal-occ.h | 23 ++ arch/powerpc/platforms/powernv/Makefile | 2 +- arch/powerpc/platforms/powernv/opal-occ.c | 116 ++++++++++ arch/powerpc/platforms/powernv/opal-powercap.c | 244 +++++++++++++++++++++ arch/powerpc/platforms/powernv/opal-psr.c | 175 +++++++++++++++ arch/powerpc/platforms/powernv/opal-wrappers.S | 5 + arch/powerpc/platforms/powernv/opal.c | 10 + 12 files changed, 662 insertions(+), 2 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-firmware-opal-powercap create mode 100644 Documentation/ABI/testing/sysfs-firmware-opal-psr create mode 100644 Documentation/devicetree/bindings/powerpc/opal/sensor-groups.txt create mode 100644 arch/powerpc/include/uapi/asm/opal-occ.h create mode 100644 arch/powerpc/platforms/powernv/opal-occ.c create mode 100644 arch/powerpc/platforms/powernv/opal-powercap.c create mode 100644 arch/powerpc/platforms/powernv/opal-psr.c -- 1.8.3.1
