[REVIEW PATCH 0/9] DSS: Series description

[Tomi Valkeinen <tomi.valkeinen@nokia.com>]

New Display Subsystem for OMAP2/3
---------------------------------

This patch set implements new Display Subsystem (DSS) for OMAP2/3 processors.
The DSS is still under work and these patches are for review. Note that there
is also another new DSS implementation from TI.

The DSS has been tested on OMAP3 SDP board, Beagle Board and on two unreleased
boards with DSI and SDI displays. The DSS used to work on OMAP2 board also, but
it's been a while since I was able to test with OMAP2 board.

The first patch is a doc file that tries to explain a bit how the drivers work.

The patch set is based on the current linux-omap tree.

You can find the patches also from a git tree at
http://www.bat.org/~tomba/git/linux-omap-dss.git/

Note that you also need two patches from Mans Rullgard to make things work. These
are needed to be able to reconfigure DSS functional clock.
http://git.mansr.com/?p=linux-omap;a=commit;h=e2de5e5578fbaa9b4b75074796da0608fc93e6ae
http://git.mansr.com/?p=linux-omap;a=commit;h=2b7b958dc79e51127d7a4ecf88ce12dbc6c31426

Questions/problems
------------------

Perhaps the biggest problems I have is the interface to user space. OMAP
hardware doesn't quite fit in to the framebuffer framework. The problem is that
a framebuffer can go to multiple overlays, and also the target display, to
which a framebuffer goes, can change.  In addition, the framebuffer size is
used as overlay size, not display resolution. So a framebuffer != display. 

I believe DRM modesetting could be of help here, at least partially, but I
haven't tried that approach yet.

But DRM modesetting wouldn't solve all the problems. For example, we still need
to configure overlays and overlay managers, and they don't quite belong to
either the framebuffer side or the display side. Currently you configure them
via a hackish sysfs interface, but I've been wondering if a /dev/omap-dss
device with ioctls would be a better choice.

There's currently no V4L2 support, but I have been thinking about that. I don't
want to make any hardcoded configuration for those, because sometimes you want
to use framebuffer devices for video overlays. So what I'd like to have is a
way, compile time or run time, to configure which overlays go to framebuffer
devices and which go to V4L2 devices. 

---

Tomi Valkeinen (9):
      DSS: support for OMAP3 SDP board
      DSS: support for Beagle Board
      DSS: Add generic DVI panel
      DSS: OMAPFB: fb driver for new display subsystem
      DSS: DSI support for OMAP2/3 DSS
      DSS: TV-out support for OMAP2/3 DSS
      DSS: RFBI support for OMAP2/3 DSS
      DSS: New display subsystem driver for OMAP2/3
      DSS: Documentation for OMAP2/3 display subsystem


 Documentation/arm/OMAP/DSS                |  240 ++
 arch/arm/mach-omap2/board-3430sdp.c       |  234 ++
 arch/arm/mach-omap2/board-omap3beagle.c   |  121 +
 arch/arm/plat-omap/Kconfig                |    2 
 arch/arm/plat-omap/Makefile               |    2 
 arch/arm/plat-omap/dss/Kconfig            |   66 +
 arch/arm/plat-omap/dss/Makefile           |    6 
 arch/arm/plat-omap/dss/dispc.c            | 1667 ++++++++++++++++
 arch/arm/plat-omap/dss/display.c          |  781 +++++++
 arch/arm/plat-omap/dss/dpi.c              |  303 +++
 arch/arm/plat-omap/dss/dsi.c              | 3027 +++++++++++++++++++++++++++++
 arch/arm/plat-omap/dss/dss.c              |  547 +++++
 arch/arm/plat-omap/dss/dss.h              |  240 ++
 arch/arm/plat-omap/dss/rfbi.c             | 1234 ++++++++++++
 arch/arm/plat-omap/dss/sdi.c              |  154 +
 arch/arm/plat-omap/dss/venc.c             |  499 +++++
 arch/arm/plat-omap/fb.c                   |    9 
 arch/arm/plat-omap/include/mach/display.h |  458 ++++
 arch/arm/plat-omap/include/mach/omapfb.h  |    7 
 drivers/video/Kconfig                     |    1 
 drivers/video/Makefile                    |    1 
 drivers/video/omap/Kconfig                |    5 
 drivers/video/omap2/Kconfig               |   54 +
 drivers/video/omap2/Makefile              |    5 
 drivers/video/omap2/omapfb-ioctl.c        |  428 ++++
 drivers/video/omap2/omapfb-main.c         | 1247 ++++++++++++
 drivers/video/omap2/omapfb-sysfs.c        |  833 ++++++++
 drivers/video/omap2/omapfb.h              |  104 +
 drivers/video/omap2/panel-dvi.c           |  121 +
 drivers/video/omap2/panel-sdp3430.c       |  110 +
 30 files changed, 12479 insertions(+), 27 deletions(-)
 create mode 100644 Documentation/arm/OMAP/DSS
 create mode 100644 arch/arm/plat-omap/dss/Kconfig
 create mode 100644 arch/arm/plat-omap/dss/Makefile
 create mode 100644 arch/arm/plat-omap/dss/dispc.c
 create mode 100644 arch/arm/plat-omap/dss/display.c
 create mode 100644 arch/arm/plat-omap/dss/dpi.c
 create mode 100644 arch/arm/plat-omap/dss/dsi.c
 create mode 100644 arch/arm/plat-omap/dss/dss.c
 create mode 100644 arch/arm/plat-omap/dss/dss.h
 create mode 100644 arch/arm/plat-omap/dss/rfbi.c
 create mode 100644 arch/arm/plat-omap/dss/sdi.c
 create mode 100644 arch/arm/plat-omap/dss/venc.c
 create mode 100644 arch/arm/plat-omap/include/mach/display.h
 create mode 100644 drivers/video/omap2/Kconfig
 create mode 100644 drivers/video/omap2/Makefile
 create mode 100644 drivers/video/omap2/omapfb-ioctl.c
 create mode 100644 drivers/video/omap2/omapfb-main.c
 create mode 100644 drivers/video/omap2/omapfb-sysfs.c
 create mode 100644 drivers/video/omap2/omapfb.h
 create mode 100644 drivers/video/omap2/panel-dvi.c
 create mode 100644 drivers/video/omap2/panel-sdp3430.c

-- 
 Tomi Valkeinen