Visible to Intel only — GUID: hdb1477361188579
Ixiasoft
Visible to Intel only — GUID: hdb1477361188579
Ixiasoft
9.71. btc_dptxll_hpd_irq
Prototype: |
|
Thread-safe: |
No |
Available from ISR: |
Yes |
Include: |
< btc_dptxll_syslib.h > |
Return: |
0 = success, 1 = fail |
Parameters: |
tx_idx—Source instance index (0 - 3) |
Description: |
This function handles an HPD_IRQ. Must be invoked every time an HPD_IRQ is detected. |
Example: |
btc_dptxll_hpd_irq(0); |
When btc_dptxll_hpd_change(1) is invoked and an MST capable DisplayPort sink device is detected, the topology discovery process is started automatically.
- Assigns a new GUID to sinks without one.
- Traverses all the topology connected through the DisplayPort sink.
- Adds each port found to the list of discovered ports.
- For each output port with plug status asserted and messaging capabilities, collects full and available PBN.
- Clears the sink VCP ID Table.
- Enables MST framing.
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