On Tue, 30 May 2023 01:55:21 +0300 Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> wrote: > On 24/05/2023 01:14, Melissa Wen wrote: > > This series is a refined version of our RFC [1] for AMD driver-specific > > color management properties. It is a collection of contributions from > > Joshua, Harry and I to enhance AMD KMS color pipeline for Steam > > Deck/SteamOS by exposing the large set of color caps available in AMD > > display HW. > > > > Considering RFC feedback, this patchset differs from the previous one by > > removing the KConfig option and just guarding driver-specific properties > > with `AMD_PRIVATE_COLOR` - but we also removed the guards from internal > > elements and operations. We stopped to advertise CRTC shaper and 3D LUTs > > properties since they aren't in use in the Steam Deck color pipeline[2]. > > On the other hand, we keep mapping CRTC shaper and 3D LUTs (DM) to DC > > MPC setup. We also improved curve calculations to take into account HW > > color caps. > > > > In short, for pre-blending, we added the following properties: > > - plane degamma LUT and predefined transfer function; > > - plane HDR multiplier > > - plane shaper LUT/transfer function; > > - plane 3D LUT; and finally, > > - plane blend LUT/transfer function, just before blending. > > This set of properties sounds interesting and not fully AMD-specific. > Could you please consider moving them to the more generic location? No, please see the following thread for plans for more generic UAPI: https://lists.freedesktop.org/archives/dri-devel/2023-May/403173.html AMD just needs something right now, so they try their own stuff first without exposing it to userspace. Thanks, pq > For the reference, MSM (Qualcomm) display hardware supports > degamma/gamma LUTs for planes too. One of the suggested usecases for > these degamma/gamma units is to support colorspace transfer functions. > > Thus, at least some of these properties can be implemented in drm/msm > driver too. > > > After blending, we already have DRM CRTC degamma/gamma LUTs and CTM, > > therefore, we extend post-blending color pipeline with CRTC gamma > > transfer function. > > > > The first three patches are on DRM KMS side. We expose DRM property > > helper for blob lookup and replacement so that we can use it for > > managing driver-specific properties. We add a tracked for plane color > > mgmt changes and increase the maximum number of properties to > > accommodate this expansion. > > > > The userspace case here is Gamescope which is the compositor for > > SteamOS. It's already using all of this functionality to implement its > > color management pipeline right now [3]. > > > > Current IGT tests kms_color and amdgpu/amd_color on DCN301 and DCN21 HW > > preserve the same results with and without the guard. > > > > Finally, I may have missed something, please let me know if that's the > > case. > > > > Best Regards, > > > > Melissa Wen > > > > [1] https://lore.kernel.org/dri-devel/20230423141051.702990-1-mwen@xxxxxxxxxx > > [2] https://github.com/ValveSoftware/gamescope/blob/master/src/docs/Steam%20Deck%20Display%20Pipeline.png > > [3] https://github.com/ValveSoftware/gamescope > > > > > > Harry Wentland (2): > > drm/amd/display: fix segment distribution for linear LUTs > > drm/amd/display: fix the delta clamping for shaper LUT > > > > Joshua Ashton (13): > > drm/amd/display: add plane degamma TF driver-specific property > > drm/amd/display: add plane HDR multiplier driver-specific property > > drm/amd/display: add plane blend LUT and TF driver-specific properties > > drm/amd/display: copy 3D LUT settings from crtc state to stream_update > > drm/amd/display: dynamically acquire 3DLUT resources for color changes > > drm/amd/display: add CRTC regamma TF support > > drm/amd/display: set sdr_ref_white_level to 80 for out_transfer_func > > drm/amd/display: add support for plane degamma TF and LUT properties > > drm/amd/display: add dc_fixpt_from_s3132 helper > > drm/adm/display: add HDR multiplier support > > drm/amd/display: handle empty LUTs in __set_input_tf > > drm/amd/display: add DRM plane blend LUT and TF support > > drm/amd/display: allow newer DC hardware to use degamma ROM for PQ/HLG > > > > Melissa Wen (21): > > drm/drm_mode_object: increase max objects to accommodate new color > > props > > drm/drm_property: make replace_property_blob_from_id a DRM helper > > drm/drm_plane: track color mgmt changes per plane > > drm/amd/display: add CRTC driver-specific property for gamma TF > > drm/amd/display: add plane driver-specific properties for degamma LUT > > drm/amd/display: add plane 3D LUT driver-specific properties > > drm/amd/display: add plane shaper LUT driver-specific properties > > drm/amd/display: add plane shaper TF driver-private property > > drm/amd/display: add comments to describe DM crtc color mgmt behavior > > drm/amd/display: encapsulate atomic regamma operation > > drm/amd/display: update lut3d and shaper lut to stream > > drm/amd/display: allow BYPASS 3D LUT but keep shaper LUT settings > > drm/amd/display: handle MPC 3D LUT resources for a given context > > drm/amd/display: add CRTC 3D LUT support > > drm/amd/display: add CRTC shaper LUT support > > drm/amd/display: add CRTC shaper TF support > > drm/amd/display: mark plane as needing reset if plane color mgmt > > changes > > drm/amd/display: decouple steps for mapping CRTC degamma to DC plane > > drm/amd/display: reject atomic commit if setting both plane and CRTC > > degamma > > drm/amd/display: program DPP shaper and 3D LUT if updated > > drm/amd/display: add plane shaper/3D LUT and shaper TF support > > > > drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 125 ++++ > > drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 69 ++ > > .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 28 +- > > .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 110 +++- > > .../amd/display/amdgpu_dm/amdgpu_dm_color.c | 612 ++++++++++++++++-- > > .../amd/display/amdgpu_dm/amdgpu_dm_crtc.c | 72 ++- > > .../amd/display/amdgpu_dm/amdgpu_dm_plane.c | 213 +++++- > > drivers/gpu/drm/amd/display/dc/core/dc.c | 49 +- > > drivers/gpu/drm/amd/display/dc/dc.h | 8 + > > .../amd/display/dc/dcn10/dcn10_cm_common.c | 107 ++- > > .../drm/amd/display/dc/dcn20/dcn20_hwseq.c | 5 +- > > .../drm/amd/display/dc/dcn30/dcn30_hwseq.c | 9 +- > > .../amd/display/dc/dcn301/dcn301_resource.c | 26 +- > > .../gpu/drm/amd/display/include/fixed31_32.h | 12 + > > drivers/gpu/drm/arm/malidp_crtc.c | 2 +- > > drivers/gpu/drm/drm_atomic.c | 1 + > > drivers/gpu/drm/drm_atomic_state_helper.c | 1 + > > drivers/gpu/drm/drm_atomic_uapi.c | 43 +- > > drivers/gpu/drm/drm_property.c | 49 ++ > > include/drm/drm_mode_object.h | 2 +- > > include/drm/drm_plane.h | 7 + > > include/drm/drm_property.h | 6 + > > 22 files changed, 1416 insertions(+), 140 deletions(-) > > >
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