823 Video Controller Driver - where ?

823 Video Controller Driver - where ?

[Steve Rossi]

I've seen some reference on the list regarding a driver for the 823
Video Controller -
i.e.
http://lists.linuxppc.org/results.html?restrict=linuxppc-embedded&words=vid823
however I've been unable to locate the source to vid823.c
apparently this question was asked before:
http://lists.linuxppc.org/linuxppc-embedded/200201/msg00164.html
and the answer was that its in the 2_4_devel tree, but I was unable to
find it in a recent snapshot of the tree (I'm unable to get the tree
from the bitkeeper repository due to a problem in bitkeeper 3.0 related
to http proxy with authentication - but thats another story!) so I got
the snapshot from http://ppckernel.org/tree.php?id=5
All I could find was the RPX framebuffer driver rpxfb.c for various LCD
panels using the LCD controller..
I'm looking for a driver for the video controller to output to an NTSC
encoder. Am I just missing something?
Anyone know where I can get vid823.c (or whatever it might be called
now) and whether its a true framebuffer driver?

Regards,
Steve

--
-------------------------------------------------------
Steven K. Rossi                     srossi@labs.mot.com
Principal Staff Engineer
Multimedia Communications Research Laboratory
Motorola Labs
-------------------------------------------------------


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: 823 Video Controller Driver - where ?

[Wolfgang Denk]

Dear Steve,

in message <3DFA05C3.30703@ccrl.mot.com> you wrote:
>
> I've seen some reference on the list regarding a driver for the 823
> Video Controller -
> i.e.
> http://lists.linuxppc.org/results.html?restrict=linuxppc-embedded&words=vid823
> however I've been unable to locate the source to vid823.c

It is my understanding that this driver is  available  with  and  for
some EP board only, and obviously not available for free.

> apparently this question was asked before:
> http://lists.linuxppc.org/linuxppc-embedded/200201/msg00164.html
> and the answer was that its in the 2_4_devel tree, but I was unable to
> find it in a recent snapshot of the tree (I'm unable to get the tree

I haven't found anything either when I searched some time ago.

> I'm looking for a driver for the video controller to output to an NTSC
> encoder. Am I just missing something?
> Anyone know where I can get vid823.c (or whatever it might be called
> now) and whether its a true framebuffer driver?

We have  a  video  controller  driver  in  our  source  tree  (module
linux-2.4 on our CVS server), see arch/ppc/8xx_io/video823.c

Note: the code relies on some initialization performed by the  U-Boot
boot  loader,  and  it  has  never  been tested yet with NTSC. But it
should be a starting point at least.

And yes, it is a  true  framebuffer  driver,  although  it  uses  the
awkward YUYV video mode format only.

Hope this helps.

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
God may be subtle, but He isn't plain mean.         - Albert Einstein

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: 823 Video Controller Driver - where ?

[Wolfgang Grandegger]

On 12/13/2002 05:07 PM Steve Rossi wrote:
> I've seen some reference on the list regarding a driver for the 823
> Video Controller -
> i.e.
> http://lists.linuxppc.org/results.html?restrict=linuxppc-embedded&words=vid823
> however I've been unable to locate the source to vid823.c
> apparently this question was asked before:
> http://lists.linuxppc.org/linuxppc-embedded/200201/msg00164.html
> and the answer was that its in the 2_4_devel tree, but I was unable to
> find it in a recent snapshot of the tree (I'm unable to get the tree
> from the bitkeeper repository due to a problem in bitkeeper 3.0 related
> to http proxy with authentication - but thats another story!) so I got
> the snapshot from http://ppckernel.org/tree.php?id=5
> All I could find was the RPX framebuffer driver rpxfb.c for various LCD
> panels using the LCD controller..
> I'm looking for a driver for the video controller to output to an NTSC
> encoder. Am I just missing something?
> Anyone know where I can get vid823.c (or whatever it might be called
> now) and whether its a true framebuffer driver?

Recently we have ported a video driver to the MPC823 using the video
encoder AD7176. The problem is, that the pixels data in the framebuffer
must have the YUV or Y-Cb-Y-Cr-Format which is rarely used, at least I
have not found any support in Linux or Microwindows. You can find the
port on our linux-2.4 CVS tree (see http://www.denx.de/re/linux.html).
Check for "arch/ppc_8xx/video823.c" and "drivers/video/fbcon-yuv.c".

Hope it helps,

Wolfgang.


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

RE: 823 Video Controller Driver - where ?

[Steven Blakeslee]

We have Linux frame buffer drivers for our 823E(LITE DW) and our
IBM405GP(EP405PC).

-----Original Message-----
From: Wolfgang Denk [mailto:wd@denx.de]
Sent: Friday, December 13, 2002 11:43 AM
To: Steve Rossi
Cc: Embedded Linux PPC List
Subject: Re: 823 Video Controller Driver - where ?



Dear Steve,

in message <3DFA05C3.30703@ccrl.mot.com> you wrote:
>
> I've seen some reference on the list regarding a driver for the 823
> Video Controller -
> i.e.
>
http://lists.linuxppc.org/results.html?restrict=linuxppc-embedded&words=vid8
23
> however I've been unable to locate the source to vid823.c

It is my understanding that this driver is  available  with  and  for
some EP board only, and obviously not available for free.

> apparently this question was asked before:
> http://lists.linuxppc.org/linuxppc-embedded/200201/msg00164.html
> and the answer was that its in the 2_4_devel tree, but I was unable to
> find it in a recent snapshot of the tree (I'm unable to get the tree

I haven't found anything either when I searched some time ago.

> I'm looking for a driver for the video controller to output to an NTSC
> encoder. Am I just missing something?
> Anyone know where I can get vid823.c (or whatever it might be called
> now) and whether its a true framebuffer driver?

We have  a  video  controller  driver  in  our  source  tree  (module
linux-2.4 on our CVS server), see arch/ppc/8xx_io/video823.c

Note: the code relies on some initialization performed by the  U-Boot
boot  loader,  and  it  has  never  been tested yet with NTSC. But it
should be a starting point at least.

And yes, it is a  true  framebuffer  driver,  although  it  uses  the
awkward YUYV video mode format only.

Hope this helps.

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
God may be subtle, but He isn't plain mean.         - Albert Einstein

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: 823 Video Controller Driver - where ?

[Wolfgang Denk]

In message <D73A25AA6E54D511AD74009027B1110F3C04C7@ORION> you wrote:
>
> We have Linux frame buffer drivers for our 823E(LITE DW) and our
> IBM405GP(EP405PC).

Where can I download the sources?

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
How much net work could a network work, if a network could net work?

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: 823 Video Controller Driver - where ?

[Wolfgang Denk]

> In message <D73A25AA6E54D511AD74009027B1110F3C04C7@ORION> you wrote:
> >
> > We have Linux frame buffer drivers for our 823E(LITE DW) and our
> > IBM405GP(EP405PC).
>
> Where can I download the sources?


Steven,

did you ever reply to this question?

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
It is common sense to take a method and try it. If it fails, admit it
frankly and try another. But above all, try something.
                                              - Franklin D. Roosevelt

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: 823 Video Controller Driver - where ?

[Wolfgang Denk]

In message <D73A25AA6E54D511AD74009027B1110F3C04F5@ORION> you wrote:
> Actually I found lcd823.c and lcdvideo.h in arch/ppc/8xx_io of your
> linux-2.4.4-2002-03-21 :)

But lcd823.c / lcdvideo.h is - as the  name  "lcd..."  suggests  -  a
driver  for the LCD controller of the MPC823 CPU; it does not support
the video controller - and this was what the OP asked for:  a  driver
for the _video_ controller.

I think there once was such a beast, probably in
ftp://ftp.mvista.com/pub/Area51/embedded-planet/video.tgz

Maybe you happen to know if this is still available somewhere?

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
If A equals success, then the formula is A = X + Y + Z. X is work.  Y
is play. Z is keep your mouth shut.                 - Albert Einstein

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: 823 Video Controller Driver - where ?

[Wolfgang Denk]

In message <D73A25AA6E54D511AD74009027B1110F3C0500@ORION> you wrote:
> I appologize, you are correct.  I sometimes think of LCD and video as the
> same because I worked with a Lynx chip that allows both LCD and Video out
> from the same buffer.  Is it possible to use the 8xx LCD driver to drive the
> video out?  I believe the only section that needs to be changed is the
> function that initializes the LCD registers, I may be off though.

It's more complicated, since the video controller will not support  a
plain framebuffer, but only YUYV video mode.

What happened to the video driver for the EP boards? It was available
once on MV's FTP server - does not even EP has a copy any more?

[Asking just out of curiousity, as we've  already  reimplemented  all
the stuff we needed - no NTSC support yet, though].

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
As far as we know, our computer has never had an undetected error.
		                                           -- Weisert

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/