Hi, yfw <nh26223@xxxxxxxxx> writes: >>>>>> Here's one that actually compiles, sorry about that. >>>>> >>>>> No worries, I was sleeping ;-) >>>>> >>>>> I will test it out early next week. Thanks. >>>> >>>> meanwhile, how about some instructions on how to test this out myself? >>>> How are you using g_webcam and what are you running on host side? Got a >>>> nice list of commands there I can use? I think I can get to bottom of >>>> this much quicker if I can reproduce it locally ;-) >>> >>> On device side: >>> - first patch g_webcam as in my first email in this thread to enable >>> 640x480@30fps; >>> - # modprobe g_webcam streaming_maxpacket=3072 >>> - then run uvc-gadget to feed the YUV frames; >>> http://git.ideasonboard.org/uvc-gadget.git >> >> as is, g_webcam never enumerates to the host. It's calls to >> usb_function_active() and usb_function_deactivate() are unbalanced. Do >> you have any other changes to g_webcam? > With uvc function gadget driver, user daemon uvc-gadget must be started > before connect to host. Not sure whether g_webcam has same requirement. f_uvc.c should be handling that by means for usb_function_deactivate(). I'll try keeping cable disconnected until uvc-gadget is running. >> Also, uvc-gadget.git doesn't compile, had to modify it a bit: >> >> -#include "../drivers/usb/gadget/uvc.h" >> +#include "../drivers/usb/gadget/function/uvc.h" >> >> Also fixed a build warning: >> >> @@ -732,6 +732,8 @@ int main(int argc, char *argv[]) >> fd_set wfds = fds; >> >> ret = select(dev->fd + 1, NULL, &wfds, &efds, NULL); >> + if (ret < 0) >> + return ret; >> if (FD_ISSET(dev->fd, &efds)) >> uvc_events_process(dev); >> if (FD_ISSET(dev->fd, &wfds)) >> >> Laurent, have you tested g_webcam recently? What's the magic to get it >> working? >> >> Here's what I get out of dmesg: >> >> [ 58.568380] usb 1-9: new high-speed USB device number 5 using xhci_hcd >> [ 58.738680] usb 1-9: New USB device found, idVendor=1d6b, idProduct=0102 >> [ 58.738683] usb 1-9: New USB device strings: Mfr=1, Product=2, SerialNumber=0 >> [ 58.738685] usb 1-9: Product: Webcam gadget >> [ 58.738687] usb 1-9: Manufacturer: Linux Foundation >> [ 58.739133] g_webcam gadget: high-speed config #1: Video >> [ 58.739138] g_webcam gadget: uvc_function_set_alt(0, 0) >> [ 58.739139] g_webcam gadget: reset UVC Control >> [ 58.739149] g_webcam gadget: uvc_function_set_alt(1, 0) >> [ 58.804369] uvcvideo: Found UVC 1.00 device Webcam gadget (1d6b:0102) >> [ 58.804479] g_webcam gadget: uvc_function_set_alt(1, 0) >> [ 64.188459] uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround. > Looks like you connect your usb device to your usb host port on same > board. Nice. yeah, that helps. > The GET_DEF is handled by user daemon uvc-gadget. It may be related. okay. -- balbi
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