drm: Supporting new connector model in tidss

[Daniel Vetter]

On Mon, Oct 5, 2020 at 11:43 PM Nikhil Devshatwar <nikhil.nd at ti.com> wrote:
>
> Hi all,
>
> I am trying to convert the upstream tidss drm driver to new
> connector model.
> The connector is getting created by the tidss driver and bridges are
> attached with flag DRM_BRIDGE_ATTACH_NO_CONNECTOR
> Here are some questions, regarding this:
>
> 1) Most of the info regarding bus_format and bus flags is coming from
> the bridges. Is it okay to not populate connector->display_info with
> bus_format and flags?
>
> 2) The "drm_atomic_bridge_chain_select_bus_fmts" does the format
> negotiation. So is it okay for the encoder to simply pick the bus_format
> from the first bridge's state?
>
> 3) What is the meaning of MEDIA_BUS_FMT_FIXED? Does it mean that the
> bridge does not change the format from input to output?
>
> 4) The bus_flags are available in bridge->timings->input_bus_flags and
> also in bridge_state->input_bus_cfg.flags. Which one should be used?

Whatever the answers, please make sure that they're recorded as
updates to the kerneldoc comments for these functions/flags/struct
members.

Thanks, Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch