iMX53 camera patch to support CSI->VDI->IC->MEM capture

[#1]

The patches are based on iMX53 L2.6.35_ER1109 BSP.

In default linux BSP, the followed two pathes were supported in kernel driver mxc_v4l2_capture.c:

CSI->IC->MEM

CSI->MEM

After appied these two patches, it can support the followed path:

CSI->VDI->IC->MEM

In this mode, the VDI de-interlace will be handled on the fly, so the whole system bandwidth will be reduced.

Limitations:

1. Since the IC can only output resolution up to 1024*1024, so this is the limation on output.

2. Only VDI motion mode 2 was supported.

mxc_v4l2_tvin_vdi_ic.zip:

It is the test aplication, test command: "./mxc_v4l2_tvin.out -ol 0 -ot 0 -ow 800 -oh 480 -i 2"

"-i 2" means CSI->VDI->IC->MEM path.

[ajithpv]

I would like to know after applying the patch, whether VDI de-interlace will be handled in software or in the actual VDIC hardware sub-module of the IPU. Please confirm.

[qiang_li-mpu_se]

Hardware, both VDI and IC are IPU hardware modules.

[ajithpv]

Thank you for your confirmation.

Since i.MX6 uses the same IPUv3 blocks, I think then i.MX6 also have a patch similar to this. Let me check that too :smileyhappy: