On Fri, 15 Oct 2021 10:08:15 +0200, Takashi Sakamoto wrote: > > Hi, > > The purpose of this patchset is to add message parser to ALSA > firewire-motu driver so that userspace applications can read information > in message delivered by isochronous packet as well as PCM frames. > The message includes information about hardware meter and user action > over hardware component such as knob, and MIDI message bytes. > > Models in MOTU FireWire series can be categorized to 4 groups in regard > of message mechanism: > > Group 1. 828 and 896 > * quadlet message to registered destination address > Group 2. 828mk2, 896hd, Traveler, 8 pre, Ultralite, 4 pre, and Audio Express > * quadlet message to registered destination address > * message delivered by isochronous packet > Group 3. 828mk3, 896mk3, Ultralite mk3, Traveler mk3, and Track 16 > * quadlet message to registered destination address > * message delivered by isochronous packet > * block message to registered destination address, including command > Group 4. V3HD/V4HD > * quadlet message to registered destination address > * block message to registered destination address > > The patchset is for message delivered by isochronous packet in group 2 > and 3. In Group 2, the message includes information of hardware meter, > information of user action over hardware component. The model in Group > 2 is called as 'register DSP' in the patchset since parameters of DSP > can be configured by asynchronous transaction for register access. In > Group 3, the message includes information of hardware meter only. The > model in Group 3 is called as 'command DSP' since software and device > communicate with commands transferred by asynchronous transaction in > regard of DSP parameters. Two types of message parser is going to be > added so that the driver caches images for the information. The cache > is available for userspace application by ioctl commands newly introduced. > > I note that no control element is added for the hardware meters and user > actions. It's expected for userspace application to retrieve and parse the > information of image then operate for user-defined control element set. > > Takashi Sakamoto (11): > ALSA: firewire-motu: add message parser to gather meter information in > register DSP model > ALSA: firewire-motu: add message parser for meter information in > command DSP model > ALSA: firewire-motu: add ioctl command to read cached hardware meter > ALSA: firewire-motu: parse messages for mixer source parameters in > register-DSP model > ALSA: firewire-motu: parse messages for mixer output parameters in > register DSP model > ALSA: firewire-motu: parse messages for output parameters in register > DSP model > ALSA: firewire-motu: parse messages for line input parameters in > register DSP model > ALSA: firewire-motu: parse messages for input parameters in register > DSP model > ALSA: firewire-motu: add ioctl command to read cached DSP parameters > ALSA: firewire-motu: queue event for parameter change in register DSP > model > ALSA: firewire-motu: notify event for parameter change in register DSP > model Applied all patches now. Thanks. Takashi
