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The UMP v1.1 spec says in the section 6.2.1: "If a UMP Endpoint declares MIDI 2.0 Protocol but a Function Block represents a MIDI 1.0 connection, then may optionally be used for messages to/from that Function Block." It implies that the driver can (and should) keep MIDI 1.0 CVM exceptionally for those FBs even if UMP Endpoint is running in MIDI 2.0 protocol, and the current driver lacks of it. This patch extends the sequencer port info to indicate a MIDI 1.0 port, and tries to send/receive MIDI 1.0 CVM as is when this port is the source or sink. The sequencer port flag is set by the driver at parsing FBs and GTBs although application can set it to its own user-space clients, too. Link: https://patch.msgid.link/20240806070024.14301-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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