Re: [RFC 0/5] HDMI 2.0+ video modes handling in DRM core

[Jose Abreu <Jose.Abreu@synopsys.com>]

++ Daniel

++ Ville

++ Shashank


On 22-03-2017 17:35, Jose Abreu wrote:
> Hi all,
>
> This is a RFC series that aims to collect comments regarding the handling
> of HDMI 2.0+ video modes and features in the DRM core.
>
> Some of the HDMI 2.0 features are already implemented and only affect kernel
> drivers (SDCD for example). There are some features, though, which can,
> and will, affect userspace.
>
> It is clear that userspace can't be broken, so, based on previous discussions
> I started implementing a "HDMI 2.0+ knob" which can be set by userspace to
> enable HDMI 2.0+ features.
>
> For now this only limits the exposing of the video modes defined in CEA-861-F,
> but it can be extended adding, for example, YCbCr 4:2:0.
>
> Please do not see this as a formal patch as this wasn't even compiled tested but,
> please, feel free to comment :)
>
> NOTE: The adding of the new video modes timings was originally done by
> Shashank Sharma <shashank.sharma@intel.com> so, credit to him. I modified it a
> little bit (added the HDMI 2.0+ flag) and I don't know if I should add his
> signed-off-by as it was modified.
>
> Best regards,
> Jose Miguel Abreu
>
> Cc: Carlos Palminha <palminha@synopsys.com>
> Cc: dri-devel@lists.freedesktop.org
>
> Jose Abreu (5):
>   drm: Add HDMI 2.0+ features exposing knob
>   drm: uapi: Add HDMI 2.0 aspect ratio flags and HDMI 2.0+ mode flag
>   drm: edid: Add HDMI 2.0 CEA video modes
>   drm: connector: Add hdmi2_allowed flag
>   drm: Do not expose HDMI 2.0+ modes to userspace/drivers unless asked
>     to
>
>  drivers/gpu/drm/drm_connector.c    |   2 +
>  drivers/gpu/drm/drm_edid.c         | 258 +++++++++++++++++++++++++++++++++++++
>  drivers/gpu/drm/drm_ioctl.c        |   5 +
>  drivers/gpu/drm/drm_probe_helper.c |   9 +-
>  include/drm/drm_connector.h        |   2 +
>  include/drm/drm_file.h             |   8 ++
>  include/drm/drm_modes.h            |  14 ++
>  include/uapi/drm/drm.h             |   7 +
>  include/uapi/drm/drm_mode.h        |   9 ++
>  9 files changed, 313 insertions(+), 1 deletion(-)
>

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