From: Tom O'Rourke <Tom.O'Rourke@xxxxxxxxx> SLPC (Single Loop Power Controller) is a replacement for some host-based power management features. The SLPC implemenation runs in firmware on GuC. This series has been tested with SKL guc firmware version 6.1. The graphics power management features in SLPC in those versions are called GTPERF, BALANCER, and DCC. GTPERF is a combination of DFPS (Dynamic FPS) and Turbo. DFPS adjusts requested graphics frequency to maintain target framerate. Turbo adjusts requested graphics frequency to maintain target GT busyness; this includes an adaptive boost turbo method. BALANCER adjusts balance between power budgets for IA and GT in power limited scenarios. BALANCER is only active when all display pipes are in "game" mode. DCC (Duty Cycle Control) adjusts requested graphics frequency and stalls guc-scheduler to maintain actual graphics frequency in efficient range. The v3 series can be found in the archive at " [PATCH v3 00/25] Add support for GuC-based SLPC" https://lists.freedesktop.org/archives/intel-gfx/2016-April/091771.html This v4 series incorporates feedback from internal code reviews for Android and Yocto projects. This series also drops the Broxton patches; the Broxton firmware has not been published yet. Broxton support can be added later when the Broxton firmware is available. Also, the "DO NOT MERGE" patches to enable SLPC and guc submission by default have been dropped. These can be added later after SLPC has been shown to outperform host-based power management; this may require a newer version of the GuC firmware. With SLPC disabled by default, this series should be safe to merge now. VIZ-6773, VIZ-6889 Sagar Arun Kamble (4): drm/i915/slpc: Add Display mode event related data structures drm/i915/slpc: Notification of Display mode change drm/i915/slpc: Notification of Refresh Rate change drm/i915/slpc: Fail intel_runtime_suspend if SLPC or RPS not active Tom O'Rourke (17): drm/i915/slpc: Expose guc functions for use with SLPC drm/i915/slpc: Add has_slpc capability flag drm/i915/slpc: Add slpc_version_check drm/i915/slpc: Add enable_slpc module parameter drm/i915/slpc: Use intel_slpc_* functions if supported drm/i915/slpc: Enable SLPC in guc if supported drm/i915/slpc: If using SLPC, do not set frequency drm/i915/slpc: Allocate/Release/Initialize SLPC shared data drm/i915/slpc: Setup rps frequency values during SLPC init drm/i915/slpc: Update current requested frequency drm/i915/slpc: Send reset event drm/i915/slpc: Send shutdown event drm/i915/slpc: Add slpc_status enum values drm/i915/slpc: Add parameter unset/set/get functions drm/i915/slpc: Add slpc support for max/min freq drm/i915/slpc: Add enable/disable debugfs for slpc drm/i915/slpc: Add i915_slpc_info to debugfs drivers/gpu/drm/i915/Makefile | 5 +- drivers/gpu/drm/i915/i915_debugfs.c | 456 +++++++++++++++++++++++++ drivers/gpu/drm/i915/i915_drv.c | 4 +- drivers/gpu/drm/i915/i915_drv.h | 7 + drivers/gpu/drm/i915/i915_guc_submission.c | 6 +- drivers/gpu/drm/i915/i915_params.c | 6 + drivers/gpu/drm/i915/i915_params.h | 1 + drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/i915_sysfs.c | 21 ++ drivers/gpu/drm/i915/intel_display.c | 2 + drivers/gpu/drm/i915/intel_dp.c | 2 + drivers/gpu/drm/i915/intel_drv.h | 11 + drivers/gpu/drm/i915/intel_guc.h | 13 + drivers/gpu/drm/i915/intel_guc_loader.c | 36 ++ drivers/gpu/drm/i915/intel_pm.c | 42 ++- drivers/gpu/drm/i915/intel_slpc.c | 516 +++++++++++++++++++++++++++++ drivers/gpu/drm/i915/intel_slpc.h | 217 ++++++++++++ 17 files changed, 1329 insertions(+), 17 deletions(-) create mode 100644 drivers/gpu/drm/i915/intel_slpc.c create mode 100644 drivers/gpu/drm/i915/intel_slpc.h -- 1.9.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
