[PATCH 0/6] UVC Gadget: Extend color matching support

[Daniel Scally <dan.scally@ideasonboard.com>]

The current UVC gadget implementation hardcodes a single color matching
descriptor and transmits it a single time following all the format and frame
descriptors. This is inflexible, and additionally applies only to the _last_
format in the array of descriptors.

This series extends the support such that the default descriptor can be amended
and is transmitted once-per-format instead of once-only, it then adds the ability
to create new color matching descriptors and associate them with particular formats.
The default color matching descriptor is retained and used where the user does not
link a new color matching descriptor to the format, so the default interaction
with userspace is unchanged from the current implementation.

Daniel Scally (6):
  usb: gadget: usb: Remove "default" from color matching attributes
  usb: gadget: uvc: Add struct for color matching in configs
  usb: gadget: uvc: Copy color matching descriptor for each frame
  usb: gadget: uvc: Remove the hardcoded default color matching
  usb: gadget: uvc: Make color matching attributes read/write
  usb: gadget: uvc: Allow creating new color matching descriptors

 .../ABI/testing/configfs-usb-gadget-uvc       |   6 +-
 drivers/usb/gadget/function/f_uvc.c           |   9 -
 drivers/usb/gadget/function/u_uvc.h           |   1 -
 drivers/usb/gadget/function/uvc_configfs.c    | 247 +++++++++++++++---
 drivers/usb/gadget/function/uvc_configfs.h    |   9 +
 5 files changed, 228 insertions(+), 44 deletions(-)

-- 
2.34.1