RE: [Intel-gfx] [v11 00/12] Add HDR Metadata Parsing and handling in DRM layer

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>-----Original Message-----
>From: Daniel Vetter [mailto:daniel@xxxxxxxx]
>Sent: Wednesday, May 29, 2019 8:33 PM
>To: Shankar, Uma <uma.shankar@xxxxxxxxx>
>Cc: intel-gfx <intel-gfx@xxxxxxxxxxxxxxxxxxxxx>; dri-devel <dri-
>devel@xxxxxxxxxxxxxxxxxxxxx>; Daniele Castagna <dcastagna@xxxxxxxxxxxx>;
>jonas@xxxxxxxxx; Sean Paul <seanpaul@xxxxxxxxxxxx>; Sharma, Shashank
><shashank.sharma@xxxxxxxxx>; Syrjala, Ville <ville.syrjala@xxxxxxxxxxxxxxx>
>Subject: Re: [Intel-gfx] [v11 00/12] Add HDR Metadata Parsing and handling in DRM
>layer
>
>On Wed, May 29, 2019 at 3:59 PM Shankar, Uma <uma.shankar@xxxxxxxxx> wrote:
>>
>>
>>
>> >-----Original Message-----
>> >From: Daniel Vetter [mailto:daniel@xxxxxxxx]
>> >Sent: Wednesday, May 29, 2019 3:13 PM
>> >To: Shankar, Uma <uma.shankar@xxxxxxxxx>
>> >Cc: intel-gfx <intel-gfx@xxxxxxxxxxxxxxxxxxxxx>; dri-devel <dri-
>> >devel@xxxxxxxxxxxxxxxxxxxxx>; Daniele Castagna
>> ><dcastagna@xxxxxxxxxxxx>; jonas@xxxxxxxxx; Sean Paul
>> ><seanpaul@xxxxxxxxxxxx>; Sharma, Shashank
>> ><shashank.sharma@xxxxxxxxx>; Syrjala, Ville
>> ><ville.syrjala@xxxxxxxxxxxxxxx>
>> >Subject: Re: [Intel-gfx] [v11 00/12] Add HDR Metadata Parsing and
>> >handling in DRM layer
>> >
>> >When building the docs with make htmldocs:
>> >
>> >./include/drm/drm_mode_config.h:841: warning: Incorrect use of
>> >kernel-doc format:          * hdr_output_metadata_property: Connector
>> >property containing hdr
>> >./include/drm/drm_mode_config.h:918: warning: Function parameter or
>> >member 'hdr_output_metadata_property' not described in 'drm_mode_config'
>> >./include/drm/drm_connector.h:1251: warning: Function parameter or
>> >member 'hdr_output_metadata' not described in 'drm_connector'
>> >./include/drm/drm_connector.h:1251: warning: Function parameter or
>> >member 'hdr_sink_metadata' not described in 'drm_connector'
>> >
>> >Please fix.
>>
>> Thanks Daniel, I missed to check the docs warnings. Will fix this.
>>
>> >In general documentation for this patch seems to be extremely lacking.
>> >No property spec, not docs for most of the new stuff added, no nothing.
>>
>> Will add the property description in connector create properties as well.
>>
>> >Please fix asap.
>>
>> Yeah, will send out the doc fix patch soon.
>
>btw I think the hdmi infoframe helper docs also need more polish.
>Generally we only document the driver interface, formal kerneldoc comments for
>static functions is overkill. I think you added some of those.

Hi Daniel,
I tried to stay consistent with how the existing stuff was handled here. So yes, it got
added as part of this as well. May be I will drop it for HDR stuff without disturbing the
legacy stuff. Hope this is fine ?

Regards,
Uma Shankar

>If you feel like a comment is needed, sure do that, but just a plain comment. Always
>worth it to make sure that the documentation you're typing actually shows up in the
>output, and correctly. If it doesn't, then there's something to improve.
>
>Can you pls also take a look at that?
>
>Thanks, Daniel
>>
>> Regards,
>> Uma Shankar
>>
>> >Shashank, Ville, this is stuff reviewers must catch.
>> >
>> >Thanks, Daniel
>> >
>> >On Thu, May 16, 2019 at 3:43 PM Uma Shankar <uma.shankar@xxxxxxxxx> wrote:
>> >>
>> >> This patch series enables HDR support in drm. It basically defines
>> >> HDR metadata structures, property to pass content (after blending)
>> >> metadata from user space compositors to driver.
>> >>
>> >> Dynamic Range and Mastering infoframe creation and sending.
>> >>
>> >> ToDo:
>> >> 1. We need to get the color framework in place for all planes
>> >>    which support HDR content in hardware. This is already in progres
>> >>    and patches are out for review in mailing list.
>> >> 2. UserSpace/Compositors: Blending policies and metadata blob
>> >>    creation and passing to driver. Work is already in progress
>> >>    by Intel's middleware teams on wayland and the patches for
>> >>    the same are in review.
>> >>
>> >> A POC has already been developed by Ville based on wayland. Please
>> >> refer below link to see the component interactions and usage:
>> >> https://lists.freedesktop.org/archives/wayland-devel/2017-December/
>> >> 036
>> >> 403.html
>> >>
>> >> v2: Updated Ville's POC changes to the patch series.Incorporated
>> >> cleanups and fixes from Ville. Rebase on latest drm-tip.
>> >>
>> >> v3: Fixed a warning causing builds to break on CI. No major change.
>> >>
>> >> v4: Addressed Shashank's review comments.
>> >>
>> >> v5: Rebase on top of Ville's infoframe refactoring changes. Fixed
>> >> non modeset case for HDR metadata update. Dropped a redundant patch.
>> >>
>> >> v6: Addressed Shashank's review comments and added RB's received.
>> >>
>> >> v7: Squashed 2 patches, dropped 1 change and addressed Brian
>> >> Starkey's and Shashank's review comments.
>> >>
>> >> v8: Addressed Jonas Karlman review comments. Added Shashank's RB to
>> >> the series, fixed a WARN_ON on BYT/CHT.
>> >>
>> >> v9: Addressed Ville and Jonas Karlman's review comments. Added the
>> >> infoframe state readout and metadata reference count.
>> >>
>> >> v10: Addressed review comments from Jonas and Ville. Dropped one
>> >> patch related to i915 fastset handling as per Ville's feedback.
>> >>
>> >> v11: Addressed Ville's review comments.
>> >>
>> >> Note: v9 version is already tested with Kodi and a confirmation
>> >> from team kodi has been received. Branch details for the same as below:
>> >> https://github.com/xbmc/xbmc/tree/feature_drmprime-vaapi
>> >>
>> >> v9 of this series is:
>> >> Tested-by: Jonas Karlman <jonas@xxxxxxxxx>
>> >>
>> >> Jonas Karlman (1):
>> >>   drm: Add reference counting on HDR metadata blob
>> >>
>> >> Uma Shankar (9):
>> >>   drm: Add HDR source metadata property
>> >>   drm: Parse HDR metadata info from EDID
>> >>   drm: Enable HDR infoframe support
>> >>   drm/i915: Attach HDR metadata property to connector
>> >>   drm/i915: Write HDR infoframe and send to panel
>> >>   drm/i915:Enabled Modeset when HDR Infoframe changes
>> >>   drm/i915: Added DRM Infoframe handling for BYT/CHT
>> >>   video/hdmi: Add Unpack function for DRM infoframe
>> >>   drm/i915: Add state readout for DRM infoframe
>> >>
>> >> Ville Syrjälä (2):
>> >>   drm: Add HLG EOTF
>> >>   drm/i915: Enable infoframes on GLK+ for HDR
>> >>
>> >>  drivers/gpu/drm/drm_atomic_state_helper.c |   5 +
>> >>  drivers/gpu/drm/drm_atomic_uapi.c         |  12 ++
>> >>  drivers/gpu/drm/drm_connector.c           |   6 +
>> >>  drivers/gpu/drm/drm_edid.c                | 124 ++++++++++++++
>> >>  drivers/gpu/drm/i915/i915_reg.h           |   4 +
>> >>  drivers/gpu/drm/i915/intel_atomic.c       |  14 +-
>> >>  drivers/gpu/drm/i915/intel_ddi.c          |   3 +
>> >>  drivers/gpu/drm/i915/intel_display.c      |   1 +
>> >>  drivers/gpu/drm/i915/intel_drv.h          |   1 +
>> >>  drivers/gpu/drm/i915/intel_hdmi.c         |  67 +++++++-
>> >>  drivers/video/hdmi.c                      | 257 ++++++++++++++++++++++++++++++
>> >>  include/drm/drm_connector.h               |  10 ++
>> >>  include/drm/drm_edid.h                    |   5 +
>> >>  include/drm/drm_mode_config.h             |   7 +
>> >>  include/linux/hdmi.h                      |  55 +++++++
>> >>  include/uapi/drm/drm_mode.h               |  23 +++
>> >>  16 files changed, 589 insertions(+), 5 deletions(-)
>> >>
>> >> --
>> >> 1.9.1
>> >>
>> >> _______________________________________________
>> >> Intel-gfx mailing list
>> >> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
>> >> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
>> >
>> >
>> >
>> >--
>> >Daniel Vetter
>> >Software Engineer, Intel Corporation
>> >+41 (0) 79 365 57 48 - http://blog.ffwll.ch
>
>
>
>--
>Daniel Vetter
>Software Engineer, Intel Corporation
>+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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