diff options
| author | Takashi Iwai <tiwai@suse.de> | 2024-08-06 09:00:23 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2024-08-06 09:01:23 +0200 |
| commit | 0079c9d1e58a39148e6ce13bda55307ea6aa3a9e (patch) | |
| tree | 6b8cc6fa3c284b298ed478be80ca12f691f9d015 /include/sound | |
| parent | a48fee68a8fa35fc1a9b924c06d3e023d067ff41 (diff) | |
ALSA: ump: Handle MIDI 1.0 Function Block in MIDI 2.0 protocol
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>
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/ump.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/ump.h b/include/sound/ump.h index 7f68056acdff..7484f62fb234 100644 --- a/include/sound/ump.h +++ b/include/sound/ump.h @@ -18,6 +18,7 @@ struct snd_ump_group { unsigned int dir_bits; /* directions */ bool active; /* activeness */ bool valid; /* valid group (referred by blocks) */ + bool is_midi1; /* belongs to a MIDI1 FB */ char name[64]; /* group name */ }; |