Hi Philipp,


On 02/16/2017 03:32 AM, Philipp Zabel wrote:

On Wed, 2017-02-15 at 18:19 -0800, Steve Longerbeam wrote:

quoted

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.

The IDMAC source pad is going to memory, so it has left the IPU.
Are you sure it should be an internal IPU format? I realize it
is linked to a capture device node, and the IPU format could then
be translated to a v4l2 fourcc by the capture device, but IMHO this
pad is external to the IPU.

Steve