[00/31] Refactor Scarlett Gen 2 support and add Scarlett Gen 3 support

Message

Geoffrey D. Bennett June 21, 2021, 6:09 p.m. UTC

This patch set broadly:
- Refactors the Scarlett Gen 2 support to make the Gen 3 mixer support
  trivial to add
- Fixes a couple of minor issues with the Gen 2 support (low priority
  for stable; the issues were not reported by any user)
- Adds support for Gen 3 devices with and without a mixer
- Adds support for the major features new with the Gen 3 devices

Geoffrey D. Bennett (31):
  ALSA: usb-audio: scarlett2: Add usb_tx/rx functions
  ALSA: usb-audio: scarlett2: Update initialisation sequence
  ALSA: usb-audio: scarlett2: Fix 6i6 Gen 2 line out descriptions
  ALSA: usb-audio: scarlett2: Always enable interrupt polling
  ALSA: usb-audio: scarlett2: Add "Sync Status" control
  ALSA: usb-audio: scarlett2: Merge common line in capture strings
  ALSA: usb-audio: scarlett2: Reformat scarlett2_config_items[]
  ALSA: usb-audio: scarlett2: Improve device info lookup
  ALSA: usb-audio: scarlett2: Move info lookup out of init function
  ALSA: usb-audio: scarlett2: Remove repeated device info comments
  ALSA: usb-audio: scarlett2: Add scarlett2_vol_ctl_write() helper
  ALSA: usb-audio: scarlett2: Add mute support
  ALSA: usb-audio: scarlett2: Allow arbitrary ordering of mux entries
  ALSA: usb-audio: scarlett2: Split struct scarlett2_ports
  ALSA: usb-audio: scarlett2: Fix Level Meter control
  ALSA: usb-audio: scarlett2: Add Gen 3 mixer support
  ALSA: usb-audio: scarlett2: Add support for "input-other" notify
  ALSA: usb-audio: scarlett2: Add Gen 3 MSD mode switch
  ALSA: usb-audio: scarlett2: Move get config above set config
  ALSA: usb-audio: scarlett2: Allow bit-level access to config
  ALSA: usb-audio: scarlett2: Add support for Solo and 2i2 Gen 3
  ALSA: usb-audio: scarlett2: Add "air" switch support
  ALSA: usb-audio: scarlett2: Add phantom power switch support
  ALSA: usb-audio: scarlett2: Add direct monitor support
  ALSA: usb-audio: scarlett2: Label 18i8 Gen 3 line outputs correctly
  ALSA: usb-audio: scarlett2: Split up sw_hw_enum_ctl_put()
  ALSA: usb-audio: scarlett2: Add sw_hw_ctls and mux_ctls
  ALSA: usb-audio: scarlett2: Update mux controls to allow updates
  ALSA: usb-audio: scarlett2: Add speaker switching support
  ALSA: usb-audio: scarlett2: Update get_config to do endian conversion
  ALSA: usb-audio: scarlett2: Add support for the talkback feature

 sound/usb/mixer.c               |    2 +-
 sound/usb/mixer_quirks.c        |    6 +
 sound/usb/mixer_scarlett_gen2.c | 2725 +++++++++++++++++++++++++------
 3 files changed, 2239 insertions(+), 494 deletions(-)


base-commit: 6c0a2078134aba6a77291554035304df9e16b85c