Commit Graph

2 Commits

Author SHA1 Message Date
Daniel Scally 7bf1c56a90 usb: gadget: uvc: Make bmControls attr read/write
For the Processing Unit and Camera Terminal descriptors defined in
the UVC Gadget we currently hard-code values into their bmControls
fields, which enumerates which controls the gadget is able to
support. This isn't appropriate since only the userspace companion
program to the kernel driver will know which controls are supported.
Make the configfs attributes that point to those fields read/write
so userspace can set them to appropriate values.

Document the new behaviour at the same time so the functionality is
clear.

Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Link: https://lore.kernel.org/r/20230309105825.216745-1-dan.scally@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-29 08:51:26 +02:00
Daniel Scally 094f391013 docs: usb: Add documentation for the UVC Gadget
The UVC Gadget function has become quite complex, but documentation
for it is fairly sparse. Add some more detailed documentation to
improve the situation.

Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Link: https://lore.kernel.org/r/20230308165213.139315-1-dan.scally@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-09 15:18:33 +01:00