diff options
| author |   Takashi Iwai <tiwai@suse.de> | 2023-05-23 09:53:35 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-05-23 12:11:09 +0200 |
| commit | 0b5288f5fe63eab687c14e5940b9e0d532b129f2 (patch) | |
| tree | 8042905dfc0d2efc6c9cb41a08a994299123f33a /sound/core/Kconfig | |
| parent | ALSA: ump: Redirect rawmidi substream access via own helpers (diff) | |
| download | wireguard-linux-0b5288f5fe63eab687c14e5940b9e0d532b129f2.tar.xz wireguard-linux-0b5288f5fe63eab687c14e5940b9e0d532b129f2.zip | |
ALSA: ump: Add legacy raw MIDI support
This patch extends the UMP core code to support the legacy MIDI 1.0
rawmidi devices. When the new kconfig CONFIG_SND_UMP_LEGACY_RAWMIDI
is set, the UMP core allows to attach an additional rawmidi device for
each UMP Endpoint. The rawmidi device contains 16 substreams where
each substream corresponds to a UMP Group belonging to the EP. The
device reads/writes the legacy MIDI 1.0 byte streams and translates
from/to UMP packets.
The legacy rawmidi devices are exclusive with the UMP rawmidi devices,
hence both of them can't be opened at the same time unless the UMP
rawmidi is opened in APPEND mode.
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-15-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/Kconfig')
| -rw-r--r-- | sound/core/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sound/core/Kconfig b/sound/core/Kconfig index eb1c6c930de9..e41818e59a15 100644 --- a/sound/core/Kconfig +++ b/sound/core/Kconfig @@ -30,6 +30,15 @@ config SND_UMP tristate select SND_RAWMIDI +config SND_UMP_LEGACY_RAWMIDI + bool "Legacy raw MIDI support for UMP streams" + depends on SND_UMP + help + This option enables the legacy raw MIDI support for UMP streams. + When this option is set, an additional rawmidi device for the + legacy MIDI 1.0 byte streams is created for each UMP Endpoint. + The device contains 16 substreams corresponding to UMP groups. + config SND_COMPRESS_OFFLOAD tristate |