An LCR (link count remaining) value of 6 is used to protect against loops.
If the LCR isn't processed at each node and attempted to be broadcasted on all
ports, waiting for a reply, a loop in the topology will result in the broadcast
message being forwarded infinitely.
Because of this, an LCR of 0 will prevent the message from being forwarded to
subsequent DP nodes.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
- Reduced lines of code that weren't part of the minimal set required for MST
streams to appear on the monitors.
- By default, don't use delays for AUX or sideband messaging.
- Added a final check to make sure that the link hasn't been lost. If it was
lost, re-train and try the programming sequence again.
- Added some additional comments to example code.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
It was observed that in MST mode, some of the sideband message were failing
due to the first check not showing a connected device.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
Increased waiting for a response to a sideband message before timing out.
Reduced number of reads to check that the RX device received an ACT event.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
Changes to the API in v2_0:
- XDptx_FindAccessibleDpDevices returns u32 now instead of void previously.
- Added a wrapper function: u32 XDptx_DiscoverTopology(XDptx *InstancePtr);
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
Testing with the new IP configuration parameter (payload data width) required
some changes to the examples.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
Also, rearranged/grouped the GUID functions with the EDID read function as
"utility" functions.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
Instead, moved it to the application level and functions operating on the Edid
take a pointer to the Edid as an argument.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
- The stream-policy maker functions were missing some asserts for checking that
the stream argument is valid.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
ReadData is now filled only with actually data instead of sideband message reply
data (reply code, port number, etc) + data.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
- Now supporting up to 4 streams.
- Separate set of main stream attributes (MSA) for each stream.
- New MST calculations for payload bandwidth number (PBN) and time slot
allocation.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
The user needs to implement Dptx_ConfigureAudioSrc and Dptx_AudioSendInfoFrame
as these functions are application-specific.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
- General clean-up and commenting.
- Added comment documentation to the examples, as well as some general
information in xdptx.h.
- Examples now identify the CPU architecture using the existence of
XPAR_INTC_0_DEVICE_ID from the xparameters.h instead of the __MICROBLAZE__
macro.
- Added and renamed some files for improved integration into SDK.
- Cleaned-up documentation and code for readability.
- No longer returning XST_INVALID_PARAMETER in lieu of asserts.
- Renamed TxConfig member of the XDptx structure to Config.
Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
