Smart PC Solutions Builder allows for OEM to define a large number of custom system states to dynamically switch to. The system states are referred to as policies, and multiple policies can be loaded onto the system at any given time, however only one policy can be active at a given time. Policy is a combination of PMF input and output capabilities. The inputs are the incoming information from the other kernel subsystems like LID state, Sensor info, GPU info etc and the actions are the updating the power limits of SMU etc. The policy binary is signed and encrypted by a special key from AMD. This policy binary shall have the inputs and outputs which the OEMs can build for the platform customization that can enhance the user experience and system behavior. This series adds the initial support for Smart PC solution to PMF driver. Note that, on platforms where CnQF and Smart PC is advertised, Smart PC shall have higher precedence and same applies for Auto Mode. v6->v7: --------- - handle buffer free during suspend/resume - Move Smart PC checks within Smart PC init function - realloc a updated buffer size during the side load. - Drop patches from 13/15 to 15/15 of V6 series v5->v6: --------- - Add Ilpo's and Mario's Reviewed-by tags - Drop 13/17 and 14/17 patches from this series which are GPU centric - Drop separate checks for battery handling. - Handle SFH failure cases v4->v5: --------- - Remove PMF-GPU interface from amdgpu driver and add DRM/backlight changes within PMF - Add module_softdep for AMDGPU - remove error checks for debugfs_create_file() - Add "Reviewed-by:" tags - Add kerneldoc for kernel-wide headers - Add checks for acpi_backlight_native - Add early return for SFH path - other cosmetic changes v3->v4: --------- - Split v3 9/16 into 2 patches, that addresses using generic fn names - Add softdep [Ilpo] instead of request_module() - return proper ACPI status [Mario] - Update comments in code [Mario] - Remove missed double _ remarks - handle battery status branches [Ilpo] - Address KASAN problems v2->v3: --------- - Remove pci_get_device() for getting gpu handle - add .suspend handler for pmf driver - remove unwanted type caste - Align comments, spaces etc. - add wrapper for print_hex_dump_debug() - Remove lkp tags in commit-msg - Add macros for magic numbers - use right format specifiers for printing - propagate error codes back to the caller - remove unwanted comments v1->v2: --------- - Remove __func__ macros - Remove manual function names inside prints - Handle tee_shm_get_va() failure - Remove double _ - Add meaningful prints - pass amd_pmf_set_dram_addr() failure errors - Add more information to commit messages - use right format specifiers - use devm_ioremap() instead of ioremap() - address unsigned long vs u32 problems - Fix lkp reported issues - Add amd_pmf_remove_pb() to remove the debugfs files created(if any). - Make amd_pmf_open_pb() as static. - Add cooling device APIs for controlling amdgpu backlight - handle amd_pmf_apply_policies() failures - Split v1 14/15 into 2 patches further - use linux/units.h for better handling - add "depends on" AMD_SFH_HID for interaction with SFH - other cosmetic remarks Shyam Sundar S K (12): platform/x86/amd/pmf: Add PMF TEE interface platform/x86/amd/pmf: Add support for PMF-TA interaction platform/x86/amd/pmf: Change return type of amd_pmf_set_dram_addr() platform/x86/amd/pmf: Add support for PMF Policy Binary platform/x86/amd/pmf: change amd_pmf_init_features() call sequence platform/x86/amd/pmf: Add support to get inputs from other subsystems platform/x86/amd/pmf: Add support update p3t limit platform/x86/amd/pmf: Add support to update system state platform/x86/amd/pmf: Make source_as_str() as non-static platform/x86/amd/pmf: Add facility to dump TA inputs platform/x86/amd/pmf: Add capability to sideload of policy binary platform/x86/amd/pmf: dump policy binary data Documentation/admin-guide/index.rst | 1 + Documentation/admin-guide/pmf.rst | 24 ++ drivers/platform/x86/amd/pmf/Kconfig | 1 + drivers/platform/x86/amd/pmf/Makefile | 3 +- drivers/platform/x86/amd/pmf/acpi.c | 37 ++ drivers/platform/x86/amd/pmf/core.c | 52 ++- drivers/platform/x86/amd/pmf/pmf.h | 203 +++++++++++ drivers/platform/x86/amd/pmf/spc.c | 158 +++++++++ drivers/platform/x86/amd/pmf/sps.c | 5 +- drivers/platform/x86/amd/pmf/tee-if.c | 469 ++++++++++++++++++++++++++ 10 files changed, 936 insertions(+), 17 deletions(-) create mode 100644 Documentation/admin-guide/pmf.rst create mode 100644 drivers/platform/x86/amd/pmf/spc.c create mode 100644 drivers/platform/x86/amd/pmf/tee-if.c -- 2.25.1
