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| hdcp22_tx Xilinx SDK Drivers API Documentation

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hdcp22_tx Documentation

This file contains the main implementation of the Xilinx HDCP 2.2 Transmitter device driver.

    MODIFICATION HISTORY:

    Ver   Who    Date     Changes

    1.00  JO     06/24/15 Initial release.
    1.01  MH     01/15/16 Replaced function XHdcp22Tx_SetDdcHandles with
                          XHdcp22Tx_SetCallback. Removed test directives.
    1.02  MG     02/25/16 Added authenticated callback and GetVersion.
    1.03  MG     02/29/16 Added XHdcp22Cipher_Disable in function XHdcp22Tx_Reset.
    1.04  MH     03/14/16 Updated StateA5 to check re-authentication request
                          before enabling the cipher.
    2.00  MH     06/28/16 Updated for repeater downstream support.
    2.01  MH     02/13/17 1. Fixed function XHdcp22Tx_IsInProgress to correctly
                             return TRUE while state machine is executing.
                          2. Fixed checking of seq_num_V for topology propagation.
                          3. Updated state A0 to set 100ms timer before sending
                             AKE_Init message to ensure encryption is disabled.
                          4. Fixed function XHdcp22Tx_UpdatePairingInfo to check
                             for empty slots before overriding entry.
                          5. Fixed problem with pairing table update that was
                             causing corrupted entries.
                          6. Update to check return status of DDC read/write.
                          7. Fixed compiler warnings.
    2.20  MH     04/12/17 Added function XHdcp22Tx_IsDwnstrmCapable.
    2.30  MH     07/06/17 1. Updated for 64 bit ARM support.
                          2. Added HDCP2Capable check for re-authentication
                          3. Update cipher enablement
                          4. Fix in XHdcp22Tx_WaitForReceiver to poll RxStatus
                             based on fixed interval.
                          5. Fix in XHdcp22Tx_WaitForReceiver to wait for READY
                             and non-zero Message_Size before reading message
                             buffer.
                          6. Check return status of DDC write/read when polling
                             RxStatus register.
    2.31  YB     03/28/19 Moved the reading of the DDC status from
                             XHdcp22Tx_TimerHandler to XHdcp22Tx_Poll.