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This new v4l2 output driver is based on videobuf, using dma contig alloc method.
It creates video dev node for each display framebuffer begin from /dev/video16
by default.
If need post-processing, this driver will do it by ipu pp driver which support:
- resizing
- CSC
- rotate
- deinterlacing
If no need post-processing, the IPU IC will be bypassed as old driver, the
buf will be set to fb buffer directly by crack fb smem_start.
The user should do setting before streamon like below:
1. set output crop
2. set ctrl like rotate/vflip/hflip/deinterlacing motion
3. set fmt
4. reqbuf
The new features compare to old driver:
- support multi-instance
- support user point buffer
- runtime suspend/resume
For suspend/resume, still has chance to meet issue on mx6q, will fix later.
Signed-off-by: Jason Chen <b02280@freescale.com>
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