[PATCH 00/16] Add CDM support for MSM writeback

[Abhinav Kumar]

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

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2.40.1