Chroma Down Sampling (CDM) block is a hardware block in the DPU pipeline which among other things has a CSC block that can convert RGB input from the DPU to YUV data. This block can be used with either HDMI, DP or writeback interface. In this series, lets first add the support for CDM block to be used with writeback and then follow-up with support for other interfaces such as DP. This was validated by adding support to pass custom output format to the IGT's kms_writeback test-case, specifically only for the output dump test-case [1]. The usage for this is: ./kms_writeback -d -f <name of the DRM YUV fmt from igt_fb> So for NV12, this can be verified with the below command: ./kms_writeback -d -f NV12 [1] : https://patchwork.freedesktop.org/series/122125/ Abhinav Kumar (16): drm/msm/dpu: fix writeback programming for YUV cases drm/msm/dpu: add formats check for writeback encoder drm/msm/dpu: rename dpu_encoder_phys_wb_setup_cdp to match its functionality drm/msm/dpu: add cdm blocks to sc7280 dpu_hw_catalog drm/msm/dpu: add cdm blocks to sm8250 dpu_hw_catalog drm/msm/dpu: add dpu_hw_cdm abstraction for CDM block drm/msm/dpu: add cdm blocks to RM drm/msm/dpu: add support to allocate CDM from RM drm/msm/dpu: add CDM related logic to dpu_hw_ctl layer drm/msm/dpu: add support to disable CDM block during encoder cleanup drm/msm/dpu: add an API to setup the CDM block for writeback drm/msm/dpu: plug-in the cdm related bits to writeback setup drm/msm/dpu: reserve cdm blocks for writeback in case of YUV output drm/msm/dpu: do not allow YUV formats if no CDM block is present drm/msm/dpu: add NV12 in the list of supported WB formats drm/msm/dpu: add cdm blocks to dpu snapshot drivers/gpu/drm/msm/Makefile | 1 + .../msm/disp/dpu1/catalog/dpu_6_0_sm8250.h | 9 + .../msm/disp/dpu1/catalog/dpu_7_2_sc7280.h | 9 + drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 43 ++- .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h | 5 + .../drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 150 +++++++++- .../gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 1 + .../gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 13 + drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.c | 272 ++++++++++++++++++ drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h | 135 +++++++++ drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 34 +++ drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h | 11 + drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h | 7 + drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c | 3 + drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 4 + drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 1 + drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 62 +++- drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h | 6 +- 18 files changed, 758 insertions(+), 8 deletions(-) create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.c create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h -- 2.40.1
