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SubjectRe: [PATCH 0/4] drm/bridge: dw-hdmi: Add support for HDR metadata
Hi Daniel, Laurent, Andrzej,

On 24/06/2019 01:30, Laurent Pinchart wrote:
> On Fri, Jun 21, 2019 at 11:01:25AM +0200, Daniel Vetter wrote:
>> On Thu, Jun 20, 2019 at 04:40:12PM +0200, Neil Armstrong wrote:
>>> Hi Andrzej,
>>> Gentle ping, could you review the dw-hdmi changes here ?
>> btw not sure you absolutely need review from Andrzej, we're currently a
>> bit undersupplied with bridge reviewers I think ... Better to ramp up
>> more.
> I try to review DRM bridge patches when possible, but dw-hdmi is a
> special case. I was told by the supplier of an SoC datasheet that
> contains the HDMI encoder IP core documentation that Synopsys required
> them to route all contributions made based on that documentation through
> Synopsys' internal legal review before publishing them. I thus decided
> to not contribute to the driver anymore, at least for areas that require
> access to documentation.

I'd like to propose myself as co-maintainer of the DRM bridge subsystem if
everybody agrees, following the excellent work Laurent and Andrzej did.
I have a very little knowledge of DSI, & other bridge drivers, but I'll do
my best.

For the dw-hdmi driver, we have a big roadmap including :
- HDR (this patchset)
- HDCP 1/2
- YUV420, YUV422, YUV44, 10bit/12bit/16bit HDMI output
- Enhanced audio support and ELD notification to ASoC

Having a more active maintainer/reviewer team would be needed, at least for
the dw-hdmi bridge.

I'll also propose Jonas Karlman <> as reviewer since he is very
active for the multimedia support on RockChip, Allwinner and Amlogic SoCs.
I'll also propose Jernej <>, if he wants,
as reviewer since he is very active on the Allwinner SoCs side.


>>> On 26/05/2019 23:18, Jonas Karlman wrote:
>>>> Add support for HDR metadata using the hdr_output_metadata connector property,
>>>> configure Dynamic Range and Mastering InfoFrame accordingly.
>>>> A drm_infoframe flag is added to dw_hdmi_plat_data that platform drivers
>>>> can use to signal when Dynamic Range and Mastering infoframes is supported.
>>>> This flag is needed because Amlogic GXBB and GXL report same DW-HDMI version,
>>>> and only GXL support DRM InfoFrame.
>>>> The first patch add functionality to configure DRM InfoFrame based on the
>>>> hdr_output_metadata connector property.
>>>> The remaining patches sets the drm_infoframe flag on some SoCs supporting
>>>> Dynamic Range and Mastering InfoFrame.
>>>> Note that this was based on top of drm-misc-next and Neil Armstrong's
>>>> "drm/meson: Add support for HDMI2.0 YUV420 4k60" series at [1]
>>>> [1]
>>>> Jonas Karlman (4):
>>>> drm/bridge: dw-hdmi: Add Dynamic Range and Mastering InfoFrame support
>>>> drm/rockchip: Enable DRM InfoFrame support on RK3328 and RK3399
>>>> drm/meson: Enable DRM InfoFrame support on GXL, GXM and G12A
>>>> drm/sun4i: Enable DRM InfoFrame support on H6
>>>> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 109 ++++++++++++++++++++
>>>> drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 37 +++++++
>>>> drivers/gpu/drm/meson/meson_dw_hdmi.c | 5 +
>>>> drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 2 +
>>>> drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c | 2 +
>>>> drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h | 1 +
>>>> include/drm/bridge/dw_hdmi.h | 1 +
>>>> 7 files changed, 157 insertions(+)

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