drm: Supporting new connector model in tidss

[Nikhil Devshatwar]

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?

Regards,
Nikhil D