sound: usb-audio: allow switching altsetting on Roland USB MIDI devices

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Add a mixer control to select between the two altsettings on Roland USB
MIDI devices where the input endpoint is either bulk or interrupt.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Clemens Ladisch 2009-10-22 09:06:19 +02:00 • committed by Takashi Iwai

parent 88cdca9c73

commit 96f61d9ade

1 changed files with 106 additions and 1 deletions

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sound/usb/usbmidi.c

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