* 18bpp display on OMAP3
@ 2010-05-26 12:00 Patrick
2010-05-26 12:13 ` Sergey Lapin
2010-05-31 9:45 ` Vladimir Pantelic
0 siblings, 2 replies; 3+ messages in thread
From: Patrick @ 2010-05-26 12:00 UTC (permalink / raw)
To: linux-arm-kernel
Hello all,
I am currently designing a new board based on OMAP3530 (Gumstix) with a 18bpp touchscreen. According to the Ti Technical Ref. Manual (page 2164) the Display controller support two packing mode: the "Loosely Packed" that use 24bits buts only the 6 MSB bits of each color and the "Packed" mode that compact?all the 18bpp.
I would like to know which mode is recommended to use depending on the fb driver and eventually on the POWERVR SGX driver.
Thanks in advance for your help
Patrick
^ permalink raw reply [flat|nested] 3+ messages in thread
* 18bpp display on OMAP3
2010-05-26 12:00 18bpp display on OMAP3 Patrick
@ 2010-05-26 12:13 ` Sergey Lapin
2010-05-31 9:45 ` Vladimir Pantelic
1 sibling, 0 replies; 3+ messages in thread
From: Sergey Lapin @ 2010-05-26 12:13 UTC (permalink / raw)
To: linux-arm-kernel
On Wed, May 26, 2010 at 4:00 PM, Patrick <kpa_info@yahoo.fr> wrote:
> Hello all,
>
> I am currently designing a new board based on OMAP3530 (Gumstix) with a 18bpp touchscreen. According to the Ti Technical Ref. Manual (page 2164) the Display controller support two packing mode: the "Loosely Packed" that use 24bits buts only the 6 MSB bits of each color and the "Packed" mode that compact?all the 18bpp.
>
> I would like to know which mode is recommended to use depending on the fb driver and eventually on the POWERVR SGX driver.
>
> Thanks in advance for your help
Packed 18bpp will require patching of Xorg and pixman. It is quite easy though.
Probably if no other problems, I'd prefer using loosely packed 24-bits
18-bit depth,
if using X11.
^ permalink raw reply [flat|nested] 3+ messages in thread
* 18bpp display on OMAP3
2010-05-26 12:00 18bpp display on OMAP3 Patrick
2010-05-26 12:13 ` Sergey Lapin
@ 2010-05-31 9:45 ` Vladimir Pantelic
1 sibling, 0 replies; 3+ messages in thread
From: Vladimir Pantelic @ 2010-05-31 9:45 UTC (permalink / raw)
To: linux-arm-kernel
Patrick wrote:
> Hello all,
>
> I am currently designing a new board based on OMAP3530 (Gumstix) with a 18bpp touchscreen. According to the Ti
> Technical Ref. Manual (page 2164) the Display controller support two packing mode: the "Loosely Packed" that use
> 24bits buts only the 6 MSB bits of each color and the "Packed" mode that compact all the 18bpp.
>
> I would like to know which mode is recommended to use depending on the fb driver and eventually on the POWERVR SGX
> driver.
only one of the modes (packed iirc) supports HW dithering in the DSS subsystem ...
^ permalink raw reply [flat|nested] 3+ messages in thread
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2010-05-26 12:00 18bpp display on OMAP3 Patrick
2010-05-26 12:13 ` Sergey Lapin
2010-05-31 9:45 ` Vladimir Pantelic
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