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| author | Takashi Iwai <tiwai@suse.de> | 2023-05-23 10:53:53 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-05-23 13:11:33 +0300 |
| commit | 81fd444aa371261cd33f31d4ffd80faeeeab0cc9 (patch) | |
| tree | 6a2a4eabc82533e6e1e93935f6ae93fb031fce27 /include/sound/seq_device.h | |
| parent | 329ffe11a014834fdef9167c7ea24bd459829f86 (diff) | |
| download | linux-81fd444aa371261cd33f31d4ffd80faeeeab0cc9.tar.xz | |
ALSA: seq: Bind UMP device
This patch introduces a new ALSA sequencer client for the kernel UMP
object, snd-seq-ump-client. It's a UMP version of snd-seq-midi
driver, while this driver creates a sequencer client per UMP endpoint
which contains (fixed) 16 ports.
The UMP rawmidi device is opened in APPEND mode for output, so that
multiple sequencer clients can share the same UMP endpoint, as well as
the legacy UMP rawmidi devices that are opened in APPEND mode, too.
For input, on the other hand, the incoming data is processed on the
fly in the dedicated hook, hence it doesn't open a rawmidi device.
The UMP packet group is updated upon delivery depending on the target
sequencer port (which corresponds to the actual UMP group).
Each sequencer port sets a new port type bit,
SNDRV_SEQ_PORT_TYPE_MIDI_UMP, in addition to the other standard
types for MIDI.
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-33-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/seq_device.h')
| -rw-r--r-- | include/sound/seq_device.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/seq_device.h b/include/sound/seq_device.h index 8899affe9155..dead74b022f4 100644 --- a/include/sound/seq_device.h +++ b/include/sound/seq_device.h @@ -78,5 +78,6 @@ void snd_seq_driver_unregister(struct snd_seq_driver *drv); */ #define SNDRV_SEQ_DEV_ID_MIDISYNTH "seq-midi" #define SNDRV_SEQ_DEV_ID_OPL3 "opl3-synth" +#define SNDRV_SEQ_DEV_ID_UMP "seq-ump-client" #endif /* __SOUND_SEQ_DEVICE_H */ |