FIMC is hardware function like csc, post, rotatin and so on.
It is necessary to send some data to FB from FIMC.
So, I have registered FB driver as v4l2 sub-device of FIMC.
----------------
| v4l2_device |
----------------
| fimc-0 |----------------
| | |
---------------- |
| |
---------------- ----------------
| v4l2_subdev | | v4l2_subdeve |
---------------- ----------------
| FB1 | | mipi-csi, |
| FB2 | | senor |
---------------- ----------------
And, it is controlled using platform_get_drvdata and platform_set_drvdata between FIMC and FB drvier.
But, FB driver uses drvdata for its own purpose. If I set v4l2_subdev ptr like this :
platform_set_drvdata(pdev, &sfb->sd); // v4l2_subdev sd;
platform_device ptr is changed.
Because FB driver aleady set like this :
platform_set_drvdata(pdev, sfb);
So, I wonder how to control data between 2 hardware.
If you have some idea, pls reply.
BRs,
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