On 08/01/2016 02:13 AM, Philipp Zabel wrote:

Am Sonntag, den 31.07.2016, 12:42 -0700 schrieb Steve Longerbeam:

quoted

Adds functions to link and unlink source channels to sink
channels in the FSU:

int ipu_fsu_link(struct ipu_soc *ipu, int src_ch, int sink_ch);
int ipu_fsu_unlink(struct ipu_soc *ipu, int src_ch, int sink_ch);

The channels numbers are usually IDMAC channels, but they can also be
channels that do not transfer data to or from memory. The following
convenience functions can be used in place of ipu_fsu_link/unlink()
when both source and sink channels are IDMAC channels:

int ipu_idmac_link(struct ipuv3_channel *src, struct ipuv3_channel *sink);
int ipu_idmac_unlink(struct ipuv3_channel *src, struct ipuv3_channel *sink);

So far the following links are supported:

IPUV3_CHANNEL_IC_PRP_ENC_MEM -> IPUV3_CHANNEL_MEM_ROT_ENC
PUV3_CHANNEL_IC_PRP_VF_MEM   -> IPUV3_CHANNEL_MEM_ROT_VF
IPUV3_CHANNEL_IC_PP_MEM      -> IPUV3_CHANNEL_MEM_ROT_PP
IPUV3_CHANNEL_CSI_DIRECT     -> IPUV3_CHANNEL_CSI_VDI_PREV

Looks good to me, thanks. Are you sure though that the target of the CSI
direct channel is VDI_PREV? I would have assumed the CSI input is fed
into VDI_NEXT, while CUR and PREV are read from memory.

Reprinting from the TRM:

37.4.11.4 Real Time Mode
In Real Time Mode the F(n-1) are coming from CSI. The CSI write to FIFO1. The DI
sub-block read F(n-1) from processing. In addition IDMAC read the field from FIFO1
and store in external memory. Then stored frames are used as F(n) and F(n+1).


Steve