These are patches implementing volume and mute support in audio gadget from Ruslan Bilovol https://patchwork.kernel.org/project/linux-usb/list/?series=439931 rebased for the latest async feedback patches (Ruslan authored, Jerome modified) already pushed to mainline. Patches 1 and 4 are basically intact, patches for f_uac2 had to be modified for the changes in the final feedback patches. I tested the f_uac2 code to work correctly. Rebased patches for switching among multiple rates originally authored by Julian Sheel https://lore.kernel.org/patchwork/patch/803422/ are to follow, thank you for reviewing and accepting this patchset first. v3 - removed debug messages added for rebasing Best regards, Pavel Hofman. Ruslan Bilovol (4): usb: audio-v2: add ability to define feature unit descriptor usb: gadget: u_audio: add bi-directional volume and mute support usb: gadget: f_uac2: add volume and mute support usb: gadget: f_uac1: add volume and mute support .../ABI/testing/configfs-usb-gadget-uac1 | 10 + .../ABI/testing/configfs-usb-gadget-uac2 | 10 + Documentation/usb/gadget-testing.rst | 38 +- drivers/usb/gadget/function/f_uac1.c | 674 +++++++++++++++++- drivers/usb/gadget/function/f_uac2.c | 656 +++++++++++++++-- drivers/usb/gadget/function/u_audio.c | 369 +++++++++- drivers/usb/gadget/function/u_audio.h | 22 + drivers/usb/gadget/function/u_uac1.h | 20 + drivers/usb/gadget/function/u_uac2.h | 23 +- include/linux/usb/audio-v2.h | 14 + 10 files changed, 1732 insertions(+), 104 deletions(-) -- 2.25.1
