[Bug 110327] [exynos-drm] failed to presentate a dumb buffer format NV12 with modifier DRM_FORMAT_MOD_SAMSUNG_64_32_TILE

[Bug 110327] [exynos-drm] failed to presentate a dumb buffer format NV12 with modifier DRM_FORMAT_MOD_SAMSUNG_64_32_TILE

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https://bugs.freedesktop.org/show_bug.cgi?id=110327

            Bug ID: 110327
           Summary: [exynos-drm] failed to presentate a dumb buffer format
                    NV12 with modifier DRM_FORMAT_MOD_SAMSUNG_64_32_TILE
           Product: DRI
           Version: unspecified
          Hardware: ARM
                OS: Linux (All)
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: DRM/other
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: zillevdr@gmx.de

Created attachment 143863
  --> https://bugs.freedesktop.org/attachment.cgi?id=143863&action=edit
picture from screen

I want to decode a H264 1280x720 video with v4l2 decoder and present this on
DRM with a dumb buffer.

On screen the Y plane is correct but UV plane have the doubled height. Pitch is
correct. But looks like a line from uv plane is used for 4 lines on y plane
instead of 2. Attached are a picture from the screen. I use the format
describtion from:
https://www.linuxtv.org/downloads/v4l-dvb-apis-new/uapi/v4l/pixfmt-nv12mt.html. 

For dumb buffer configuration the height must aligned to 64 instead of to 32.
If align height to 32 EINVAL is returned from AddFB2. OK, the UV plane have the
half height from Y plane and must aligned to 32.

The size from DRM_IOCTL_CREATE_DUMB_BUFFER is to big. IOCTL returned a dumb
buffer size from 1966080.
width = 1280 => aligned to 128 width = 1280
height = 720 => aligned to 64 height = 768
Y plane 1280 * 768 = 983040
UV plane 1280 * 768 / 2 = 491520
Dumb buffer size should be 1474560. Looks like the UV plane have doubled size
as it should be.

The device is a Odroid-U3 with Exynos4412.
Kernel version is 5.0.5.

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[Bug 110327] [exynos-drm] failed to presentate a dumb buffer format NV12 with modifier DRM_FORMAT_MOD_SAMSUNG_64_32_TILE

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https://bugs.freedesktop.org/show_bug.cgi?id=110327

--- Comment #1 from andrzej.hajda@gmail.com ---
Could you post exact steps to reproduce it? Code/command line, plus kernel logs
with drm.debug=31.

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[Bug 110327] [exynos-drm] failed to presentate a dumb buffer format NV12 with modifier DRM_FORMAT_MOD_SAMSUNG_64_32_TILE

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https://bugs.freedesktop.org/show_bug.cgi?id=110327

--- Comment #2 from Jens Ziller <zillevdr@gmx.de> ---
Created attachment 143878
  --> https://bugs.freedesktop.org/attachment.cgi?id=143878&action=edit
complete dmesg out

The added dmesg out is complete from boot. The warning during boot is new. I
never see it before. v4l2-drm-test runs like before.
My code is on github. It's ugly code. Much things are hardcoded. It's only for
testing.
https://github.com/zillevdr/v4l2-drm-test

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[Bug 110327] [exynos-drm] failed to presentate a dumb buffer format NV12 with modifier DRM_FORMAT_MOD_SAMSUNG_64_32_TILE

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https://bugs.freedesktop.org/show_bug.cgi?id=110327

--- Comment #3 from andrzej.hajda@gmail.com ---
Looking at the code apparently you are setting V4L2_PIX_FMT_NV12MT_16X16 in
MFC, but MIXER requires V4L2_PIX_FMT_NV12MT.

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[Bug 110327] [exynos-drm] failed to presentate a dumb buffer format NV12 with modifier DRM_FORMAT_MOD_SAMSUNG_64_32_TILE

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https://bugs.freedesktop.org/show_bug.cgi?id=110327

--- Comment #4 from Jens Ziller <zillevdr@gmx.de> ---
No, the ioctl there 
https://github.com/zillevdr/v4l2-drm-test/blob/master/v4l2.c#L150
looks what format MFC can use. This I set in line 155. The output from fprintf
line 174:
FMT CAPTURE: width 1280 height 736 4cc TM12 num_planes 2

https://www.linuxtv.org/downloads/v4l-dvb-apis-new/uapi/v4l/yuv-formats.html
say that TM12 is V4L2_PIX_FMT_NV12MT not V4L2_PIX_FMT_NV12MT_16X16. I think the
right format is set.

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[Bug 110327] [exynos-drm] failed to presentate a dumb buffer format NV12 with modifier DRM_FORMAT_MOD_SAMSUNG_64_32_TILE

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https://bugs.freedesktop.org/show_bug.cgi?id=110327

--- Comment #5 from andrzej.hajda@gmail.com ---
OK, it seems that the format is correct. HW registers also seems to be
programmed correctly. Documentation is not helpful at all, at least for me [1].
The only guess I have is that tile format produced by MFC is different than
format accepted by MIXER in regard of chroma. Unfortunately I am too busy now
to investigate it deeper. Maybe next week I will be able to consult it with sbd
more competent in the subject.

[1]:
https://usermanual.wiki/Document/SECExynos4412Users20ManualVer10000.544818918.pdf

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[Bug 110327] [exynos-drm] failed to presentate a dumb buffer format NV12 with modifier DRM_FORMAT_MOD_SAMSUNG_64_32_TILE

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https://bugs.freedesktop.org/show_bug.cgi?id=110327

Martin Peres <martin.peres@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED

--- Comment #6 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/misc/issues/4.

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