Re: Question: gadget: How to realize uvc and uac composite function?

[app l]

Through the debug, the problem has been resolved, it can be recognized
normally, and the windows driver can be loaded normally, thank you

On Tue, Nov 10, 2020 at 10:28 AM app l <lipc198702@xxxxxxxxx> wrote:
>
> Hi,
> Version: 4.9 and uac1 driver is V5.9. I tested it based on 4.9 with
> backported dwc3 driver frome v5.9.
> 1. According to configfs-usb-gadget-uvc, PC(Windows 10) can get ISO
> data normally;
> 2. According to configfs-usb-gadget-uac1, PC(Windows 10) can  install
> audio driver normally(AC Interface,/Captue Input terminal/Speaker);
> 3、uvc+uac1 composite device, PC(Windows 10) can get ISO data normally,
> but PC shows that the uac1 driver installation failed(AC
> Interface/Capture Inactive/Playback Inactive). AC Interface/Capture
> Inactive/Playback Inactive all show the device cannot start code 10,
> The settings of the I/O device are incorrect or the configuration
> parameters of the driver are incorrect. Through the USB analyzer to
> capture the packet, I found that the Index value seems to be wrong
> when PC host to get the descriptor. The acquisition is Playback
> Inactive and Capture Inactive, and the PC did not send the command
> packet about uac1. It is difficult to debug it.
> I suspect that some parts of the uac1 descriptor need to be modified,
> but I don’t know which one to modify.
> I sincerely hope that everyone can give some suggestions or related
> patches to help me. Thanks very much!
>
> Regards,
> pengcheng