Am Freitag, 17. Februar 2012, 00:25:51 schrieb Laurent Pinchart:

Hello everybody,

First of all, I would like to thank all the attendees for their
participation in the mini-summit that helped make the meeting a success.

Here are my consolidated notes that cover both the Linaro Connect meeting
and the ELC meeting. They're also available at
http://www.ideasonboard.org/media/meetings/.


Kernel Display and Video API Consolidation mini-summit at ELC 2012
------------------------------------------------------------------

[...]

***  Display Panel Drivers ***

  Goal: Sharing display panel drivers between display controllers from
  different vendors.

  Panels are connected to the display controller through a standard bus
with a control channel (DSI and eDP are two major such buses). Various
vendors have created proprietary interfaces for panel drivers:

  - TI on OMAP (drivers/video/omap2/displays).
  - Samsung on Exynos (drivers/video/exynos).
  - ST-Ericsson on MCDE
(http://www.igloocommunity.org/gitweb/?p=kernel/igloo-
kernel.git;a=tree;f=drivers/video/mcde)
  - Renesas is working on a similar interface for SH Mobile.

  HDMI-on-DSI transmitters, while not panels per-se, can be supported
through the same API.

  A Low level Linux Display Framework (https://lkml.org/lkml/2011/9/15/107)
  has been proposed and overlaps with this topic.

  For DSI, a possible abstraction level would be a DCS (Display Command
Set) bus. Panels and/or HDMI-on-DSI transmitter drivers would be
implemented as DCS drivers.

  Action points:
  - Marcus to work on a proposal for DCS-based panels (with Tomi Valkeinen
and Morimoto-san).

It would also be interesting to see something similar for MIPI-DBI (type B for 
me) [aka rfbi on omap], as most epaper displays use this to transmit data and 
currently use half-baked interfaces.

So hopefully I'll be able to follow the discussion and can then try to convert 
your findings to the dbi case.

Heiko