On 09/08/2010 03:38 PM, Russ Dill wrote:
On Wed, Sep 8, 2010 at 6:39 AM, Tasslehoff Kjappfot<tasskjapp@xxxxxxxxx> wrote:
Hi list :-)
I had trouble getting a standard 800x600@60Hz VGA signal to display
correctly on my monitors. Measuring the output showed that the front and
back porches were swapped both for hsync and vsync. After reading the source
I think I found the error in drivers/video/omap2/omapfb/omapfb-main.c. Patch
attached.
http://www.xfree86.org/3.3.6/fbdev6.html shows the way it should be, but
todays code sets:
hfp = left margin
hbp = right margin
vfp = upper margin
vbp = lower margin
I tested a patched kernel with 800x600@60Hz on two different monitors and a
vga grabber, and it solved my issues.
This looks good. Before this came up, I also thought that front porch
meant left margin, and back porch meant margin, but margins are named
in relation to pixel data, and porches are named in relation to sync
pulses.
You might want to add a Signed-off-by line
Reviewed-by: Russ.Dill@xxxxxxxxx
Signed-off-by: tasskjapp@xxxxxxxxx
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