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kernel: sound: add support for MIDI 2.0 and UMP
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New Packages / build options:
* sound-midi2: enable MIDI 2.0 / UMP in ALSA MIDI
* sound-midi2-seq: enable MIDI 2.0 / UMP in ALSA sequencer
* sound-midi2-usb: enable USB MIDI 2.0 support
* sound-dynamic-minors: allow more than 8 MIDI devices
More info about ALSA MIDI 2.0:
 https://docs.kernel.org/6.12/sound/designs/midi-2.0.html
More info about MIDI 2.0:
 https://midi.org/midi-2-0

Signed-off-by: Florian Bomers <github@bome.com>
Link: https://github.com/openwrt/openwrt/pull/20727
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
This commit is contained in:
Florian Bomers 2025-11-10 18:39:34 +01:00 • committed by Christian Marangi
parent 6f99711b1b
commit 4daff067d7
No known key found for this signature in database
GPG key ID: AC001D09ADBFEAD7
2 changed files with 53 additions and 1 deletions
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52
package/kernel/linux/modules/sound.mk
View file

@ -604,3 +604,55 @@ define KernelPackage/sound-hda-intel/description
endef
$(eval $(call KernelPackage,sound-hda-intel))
define KernelPackage/sound-midi2
TITLE:=MIDI 2.0 and UMP Support
KCONFIG:= \
CONFIG_SND_UMP=y \
CONFIG_SND_UMP_LEGACY_RAWMIDI=y
FILES:=$(LINUX_DIR)/sound/core/snd-ump.ko
AUTOLOAD:=$(call AutoProbe,snd-ump)
$(call AddDepends/sound)
endef
define KernelPackage/sound-midi2/description
Kernel module for MIDI 2.0: sequencer, rawmidi, and USB-MIDI 2.0 support.
endef
$(eval $(call KernelPackage,sound-midi2))
define KernelPackage/sound-midi2-seq
TITLE:=MIDI 2.0 and UMP Support for Sequencer
KCONFIG:= \
CONFIG_SND_SEQ_UMP=y \
CONFIG_SND_SEQ_UMP_CLIENT=y
DEPENDS:=+kmod-sound-midi2 +kmod-sound-seq
$(call AddDepends/sound)
endef
$(eval $(call KernelPackage,sound-midi2-seq))
define KernelPackage/sound-midi2-usb
TITLE:=MIDI 2.0 and UMP Support for USB-MIDI
KCONFIG:=CONFIG_SND_USB_AUDIO_MIDI_V2=y
DEPENDS:=+kmod-sound-midi2 +kmod-usb-audio
$(call AddDepends/sound)
endef
$(eval $(call KernelPackage,sound-midi2-usb))
define KernelPackage/sound-dynamic-minors
TITLE:=Support more than 8 audio and MIDI devices
KCONFIG:=CONFIG_SND_DYNAMIC_MINORS=y
$(call AddDepends/sound)
endef
define KernelPackage/sound-dynamic-minors/description
Kernel module for dynamic minor device support.
Required for using more than 8 audio and MIDI devices.
endef
$(eval $(call KernelPackage,sound-dynamic-minors))

2
package/kernel/linux/modules/usb.mk
View file

@ -616,7 +616,7 @@ define KernelPackage/usb-audio
CONFIG_SND_USB_AUDIO
$(call AddDepends/usb)
$(call AddDepends/sound)
DEPENDS+=+kmod-media-controller
DEPENDS+=+kmod-media-controller +PACKAGE_kmod-sound-midi2-usb:kmod-sound-midi2
FILES:= \
$(LINUX_DIR)/sound/usb/snd-usbmidi-lib.ko \
$(LINUX_DIR)/sound/usb/snd-usb-audio.ko