Hi,
You can define default modes in board file, using platform data for
omapfb.
See omapfb.h:
struct omapfb_platform_data
struct omapfb_mem_desc
struct omapfb_mem_region
omapfb_set_platform_data().
If you need to do it dynamically in boot scripts, you can change the
mode via the normal fb interface. You don't need to expose
recommended_bpp.
Tomi
Ps. Please also cc linux-omap mailing list, so other people will see the
answers also.
On Wed, 2009-10-28 at 10:02 +0100, ext Laurent Epinat wrote:
> Hello Tomi,
>
> I would like to know your opinion.
>
> We had own board with 2 differents configuration
> First with VGA/DVI display and the other with LCD panel (Prime view)
> for each configuration we need to used 2 differents color depth (24 bpp,
> 16 bpp).
>
> For the vga I can override the parameters with the module args
> (mode=dvi:1024x768-16@60)
> but for the lcd panel is not working, I seen in the display.c
> than the get_recommended_bpp() return the data_lines of the panel (own
> panel has 18 physical lines but connected like 24 lines)
>
> I decided to expose the variable panel.recommended_bpp in the sysfs for
> forcing the value, it works but I think it's really dirty
> cause in one case I'm using
>
> modprobe omapdss def_disp=lcd
> modprobe panel_primeview_pm070wt3
> if [ x${OGLES} = x"yes" ]; then
> echo "16" > /sys/devices/omapdss/display0/recommended_bpp
> fi
> modprobe omapfb vram=0:4M,1:4M,2:4M
>
>
> and the other case :
>
> modprobe omapdss def_disp=dvi
> modprobe panel_generic
> if [ x${OGLES} = x"yes" ]; then
> SCREEN_MODE="mode=dvi:1024x768-16@60"
> else
> SCREEN_MODE="mode=dvi:1024x768-24@60"
> fi
> modprobe omapfb vram=0:4M,1:4M,2:4M :${SCREEN_MODE}
>
>
> Have you any ideas to do it better?
>
>
> sorry for my english
>
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