MSM display controller hardware (DPU) has an inbuilt RSC (Resource Coordinator) HW block which can control power resources and bus bandwidth voting based on frame timing parameters without DPU driver intervention.
Downstream driver relies on RSC driver for controlling these resources (via RSC HW block) for better power benefits. Removing RSC device/driver support till the RSC dependencies make their way upstream.
In absence of RSC HW, DPU driver controls these resources currently via a custom implementation for power management. Next, we will work on moving the power resource management using runtime_pm.
Corresponding devicetree binding are also removed.
Details for DPU driver upstreaming: https://lists.freedesktop.org/archives/freedreno/2018-February/001678.html
Changes in v3: - Added more details to commit message and cover letter (Daniel Vetter)
Changes in v2: - Remove last reference to dpu_power_rsc_update - Add DPU PATCH tag for better filtering - Rebase on tip of for-next-staging
Rajesh Yadav (2): dt-bindings: msm/disp: Remove DPU RSC device bindings drm/msm: Remove RSC support from DPU driver
.../devicetree/bindings/display/msm/dpu-rsc.txt | 96 -- drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c | 130 +- drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.h | 6 - drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 14 - drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h | 9 +- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 242 +--- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 7 - drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h | 1 - drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c | 20 +- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.h | 3 - drivers/gpu/drm/msm/dpu_dbg.c | 27 - drivers/gpu/drm/msm/dpu_dbg.h | 10 - drivers/gpu/drm/msm/dpu_power_handle.c | 73 +- drivers/gpu/drm/msm/dpu_power_handle.h | 4 - drivers/gpu/drm/msm/dpu_rsc.c | 1367 -------------------- drivers/gpu/drm/msm/dpu_rsc_hw.c | 818 ------------ drivers/gpu/drm/msm/dpu_rsc_priv.h | 191 --- include/linux/dpu_rsc.h | 302 ----- 18 files changed, 42 insertions(+), 3278 deletions(-) delete mode 100644 Documentation/devicetree/bindings/display/msm/dpu-rsc.txt delete mode 100644 drivers/gpu/drm/msm/dpu_rsc.c delete mode 100644 drivers/gpu/drm/msm/dpu_rsc_hw.c delete mode 100644 drivers/gpu/drm/msm/dpu_rsc_priv.h delete mode 100644 include/linux/dpu_rsc.h