Hi, Although below models supported by ALSA bebob driver have multiple MIDI ports, the driver just adds one pair of MIDI ports for ALSA Rawmidi interface: * M-Audio ProjectMix I/O * ESI Quatafire 610 The cause comes from two bugs: * The driver registers the number of MIDI conformant data channels into AM824 data block processing layer, instead of the number of MIDI ports. * For Quatafire, the driver counts plugs with MIDI type, however the number of physical MIDI ports is expressed in the number of channels on the plugs. This patchset enables MIDI message transmission for multiple ports. Takashi Sakamoto (3): ALSA: bebob: code refactoring for stream format detection ALSA: bebob: detect the number of available MIDI ports ALSA: bebob: enable to deliver MIDI messages for multiple ports sound/firewire/bebob/bebob.h | 2 + sound/firewire/bebob/bebob_command.c | 36 ++++++ sound/firewire/bebob/bebob_stream.c | 163 ++++++++++++++------------- 3 files changed, 120 insertions(+), 81 deletions(-) -- 2.27.0
