[PATCH v4 33/36] media: imx: redo pixel format enumeration and negotiation

[Philipp Zabel]

On Wed, 2017-02-15 at 18:19 -0800, Steve Longerbeam wrote:
> The previous API and negotiation of mbus codes and pixel formats
> was broken, and has been completely redone.
> 
> The negotiation of media bus codes should be as follows:
> 
> CSI:
> 
> sink pad     direct src pad      IDMAC src pad
> --------     ----------------    -------------
> RGB (any)        IPU RGB           RGB (any)
> YUV (any)        IPU YUV           YUV (any)
> Bayer              N/A             must be same bayer code as sink

The IDMAC src pad should also use the internal 32-bit RGB / YUV format,
except if bayer/raw mode is selected, in which case the attached capture
video device should only allow a single mode corresponding to the output
pad media bus format.

regards
Philipp