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It > > > turns out that the VSP RPF and WPF entities can convert between RGB and > > > YUV, a feature that we have failed to test so far. The hardware support > > > BT.601 and BT.709, in both limited and full range. Proper configuration > > > of colorspace is crucial for accurate image rendering. > > > > > > Patch 1/9 starts by implementing pixel format enumeration in the driver, > > > a feature that was surprisingly missing. Patch 2/9 then continues with > > > another fix, restricting the creation of the HSI and HST entities to VSP > > > instances that include them. Following with another fix, patch 4/9 > > > addresses format setting on the RPF and WPF source pad to disable HSV > > > <-> { RGB, YUV } conversion, a feature *not* supported by the hardware. > > > > > > After those initial fixes, patch 5/9 starts implementing colorspace > > > support by reporting the related information to userspace. The driver > > > currently hardcodes limited range BT.601 when programming the hardware, > > > so that is the value that the patch reports to userspace for YUV > > > formats. Patch 6/9 makes the YCbCr encoding and quantization > > > configurable, finalizing colorspace support in the VSP driver. > > > > > > The next three patches are new in this version. They proceed with > > > exposing colorspace configurability in the API exposed to the DU DRM > > > driver in patch 8/9 (with 7/9 performing a small refactoring first). > > > Patch 9/9 then updates the DU driver accordingly, to create plane > > > colorspace properties and wire them up to the VSP. > > > > > > The series has been tested with the vsp-tests suite and the kms-tests > > > suite. Patches that add CSC support to the vsp-tests suite have been > > > posted in [1], and can be found in the vsp-tests git tree in [2]. > > > > I've tested this series with out of Tree patches with RZ/G3E. > > Basically I've added the equivalent of: > > > > - drm: rcar-du: Create plane color properties > > > > On drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.c > > > > Tested using modetest: > > > > modetest -M rzg2l-du -s 48@46:800x600-60.32@YU16 -d -P 39@46:512x300+200+200@YU16 > > > > modetest -M rzg2l-du -w 32:COLOR_ENCODING:0 > > modetest -M rzg2l-du -w 32:COLOR_ENCODING:1 > > > > modetest -M rzg2l-du -w 32:COLOR_RANGE:0 > > modetest -M rzg2l-du -w 32:COLOR_RANGE:1 > > > > Where 32 is the id of the primary plane. > > > > Tested-by: Tommaso Merciai > > Thank you for confirming this works on RZ. Unfortunately your Tested-by > tag came after I submitted the pull request, and the patches got merged > without it. It however gives me confidence that the code is working as > intended. Ouch, sorry for being late. No worries, hope this help. :) Thanks & Regards, Tommaso > > > > Updates to media-ctl and yavta to support setting colorspace on video > > > capture devices and on subdev source pads have been merged in the > > > respective projects, make sure to use the latest master branch if you > > > want to run the tests. > > > > > > The series has also been tested with the latest v4l2-compliance. The bad > > > news is that the test flags 56 errors when run on a Renesas Salvator-X > > > 2nd version board based on r8a77965: > > > > > > Grand Total for vsp1 device /dev/media1: 757, Succeeded: 701, Failed: 56, Warnings: 0 > > > > > > The good news is that none of those are regressions, quite the contrary: > > > without this series applied, the total number of failures is 95, and the > > > diff shows no new error. I will therefore address those issues > > > separately. > > > > > > I would like to get patch 1/9 to 8/9 merged in v6.16, to then merge 9/9 > > > in v6.17. > > > > > > [1] https://lore.kernel.org/linux-renesas-soc/20250409004758.11014-1-laurent.pinchart@ideasonboard.com > > > [2] https://git.ideasonboard.com/renesas/vsp-tests.git/log/?h=csc > > > > > > Laurent Pinchart (9): > > > media: renesas: vsp1: Implement pixel format enumeration > > > media: renesas: vsp1: Make HSI and HST modules optional > > > media: renesas: vsp1: Fix HSV format enumeration > > > media: renesas: vsp1: Fix media bus code setup on RWPF source pad > > > media: renesas: vsp1: Report colour space information to userspace > > > media: renesas: vsp1: Allow setting encoding and quantization > > > media: renesas: vsp1: Name nested structure in vsp1_drm > > > media: renesas: vsp1: Expose color space through the DRM API > > > drm: rcar-du: Create plane color properties > > > > > > drivers/gpu/drm/renesas/rcar-du/rcar_du_vsp.c | 15 ++ > > > drivers/media/platform/renesas/vsp1/vsp1.h | 1 + > > > .../media/platform/renesas/vsp1/vsp1_brx.c | 9 +- > > > .../media/platform/renesas/vsp1/vsp1_drm.c | 22 +- > > > .../media/platform/renesas/vsp1/vsp1_drm.h | 8 +- > > > .../media/platform/renesas/vsp1/vsp1_drv.c | 59 +++--- > > > .../media/platform/renesas/vsp1/vsp1_entity.c | 22 +- > > > .../media/platform/renesas/vsp1/vsp1_entity.h | 2 + > > > .../media/platform/renesas/vsp1/vsp1_hsit.c | 11 +- > > > .../media/platform/renesas/vsp1/vsp1_pipe.c | 188 ++++++++++++++++-- > > > .../media/platform/renesas/vsp1/vsp1_pipe.h | 5 + > > > .../media/platform/renesas/vsp1/vsp1_rpf.c | 29 ++- > > > .../media/platform/renesas/vsp1/vsp1_rwpf.c | 51 ++++- > > > .../media/platform/renesas/vsp1/vsp1_sru.c | 9 +- > > > .../media/platform/renesas/vsp1/vsp1_uds.c | 9 +- > > > .../media/platform/renesas/vsp1/vsp1_video.c | 50 ++++- > > > .../media/platform/renesas/vsp1/vsp1_wpf.c | 29 ++- > > > include/media/vsp1.h | 4 + > > > 18 files changed, 442 insertions(+), 81 deletions(-) > > > > > > > > > base-commit: 398a1b33f1479af35ca915c5efc9b00d6204f8fa > > > prerequisite-patch-id: e3d9847d1da4398f1bf0b57f5ef4a612392c7255 > > -- > Regards, > > Laurent Pinchart >