ALSA: seq: Support MIDI 2.0 UMP Endpoint port

Browse source

This is an extension to ALSA sequencer infrastructure to support the
MIDI 2.0 UMP Endpoint port.  It's a "catch-all" port that is supposed
to be present for each UMP Endpoint.  When this port is read via
subscription, it sends any events from all ports (UMP Groups) found in
the same client.

A UMP Endpoint port can be created with the new capability bit
SNDRV_SEQ_PORT_CAP_UMP_ENDPOINT.  Although the port assignment isn't
strictly defined, it should be the port number 0.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-28-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

...

This commit is contained in:

Takashi Iwai 2023-05-23 09:53:48 +02:00

parent 74661932ac

commit 177ccf811d

3 changed files with 41 additions and 8 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

include/uapi/sound/asequencer.h

View file

47

sound/core/seq/seq_clientmgr.c

View file

1

sound/core/seq/seq_clientmgr.h

View file