DisplayPort Intel® FPGA IP User Guide

ID 683273
Date 1/24/2022
Public

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9.58. btc_dptx_mst_remote_dpcd_wr_req

Prototype:

int btc_dptx_mst_remote_dpcd_wr_req(
BYTE tx_idx,
BTC_RAD *RAD,  
BYTE port_number,
unsigned int addr,  
BYTE length,
BYTE *data)

Thread-safe:

No

Available from ISR:

No

Include:

< btc_dptx_syslib.h >

Return:

0 = success, 1 = fail

Parameters:

  • tx_idx—Source instance index (0 - 3)
  • RAD—MST Relatives Address of the Destination
  • port_number—Downstream device output port number
  • addr—DPCD address
  • length—Number of bytes to write
  • data—Data to be written

Description:

This function issues a REMOTE_DPCD_WRITE DOWN_REQ MST sideband message.

Example:

btc_dptx_mst_remote_dpcd_wr_req(0, aRAD, 9, 0x68000, 1, p_data);