Q: IPU + image scrolling [Linux]

[maxx]

Hello!

I need to implement image scrolling under Linux on a imx535.

According to the " i.MX53 Multimedia Applications Processor Reference Manual", 45.3.1.6.2 Update Of The Display Buffer:

"Automatic display of a changing image (animation) or moving image (scrolling) This

is implemented by reading frames (from a full plane buffer) with incremental offset"

Seems that is exactly what I need. I tried to research IPU driver located in $BUILD/linux/drivers/mxc/ipu*, but seems that current implementation of IPU driver and therefore user-space library does not support scrolling feature at all.

Does anybody dig into this field yet? I also tried to search IMX community - no results so far:(

Thanks for any info!

[jimmychan]

Unfortunately, there is no example for the moving image (scrolling). For details, please read the i.MX53RM Chapter 45.5.2.7.1 Scrolling support and 45.5.2.10 CPMEM - Channel Parameter Memory.  You may need set the values in cpmem and implement it by yourself.