[PATCH v3 0/2] ALSA: Add driver for big Scarlett 4th Gen interfaces

["Geoffrey D. Bennett" <g@b4.vu>]

Hi Takashi,

Static buffers in the ioctl structs didn't seem to be the right way to
go, so I followed the instructions in
Documentation/drivers-api/ioctl.rst and the ioctls now work with
32-bit userspace on 64-bit kernels.

I added suspend/resume handling and all the suspend/resume cases that
I tried now work too.

Regards,
Geoffrey.

---
Changes in v3:
- Update ioctl structs and add ioctl_compat op to work with 32-bit
  userspace on 64-bit kernels
- Update driver to do all init steps so it can re-init after
  suspend/resume
- Add version field to init ioctl for future compatibility
- Improve error messages when unexpected response data is received

---
Changes in v2 as per Takashi's feedback:
- Use fixed-size data arrays instead of pointers in ioctl structs
- Define notify struct outside of struct fcp_dev
- Use u8/u16 types without __ prefix
- Use cleanup.h for code simplification
- Add init flag to ensure FCP_IOCTL_INIT is called before
  FCP_IOCTL_CMD and FCP_IOCTL_SET_METER_MAP
- Do not destroy/recreate the meter control (the number of channels is
  now fixed when it is created)

Geoffrey D. Bennett (2):
  ALSA: FCP: Add Focusrite Control Protocol driver
  ALSA: scarlett2: Add device_setup option to use FCP driver

 MAINTAINERS                 |  10 +-
 include/uapi/sound/fcp.h    |  71 +++
 sound/usb/Makefile          |   1 +
 sound/usb/fcp.c             | 979 ++++++++++++++++++++++++++++++++++++
 sound/usb/fcp.h             |   7 +
 sound/usb/mixer_quirks.c    |   7 +
 sound/usb/mixer_scarlett2.c |   8 +
 7 files changed, 1079 insertions(+), 4 deletions(-)
 create mode 100644 include/uapi/sound/fcp.h
 create mode 100644 sound/usb/fcp.c
 create mode 100644 sound/usb/fcp.h

-- 
2.45.0