On 01/04/2013 02:20 PM, Gary Thomas wrote: > > > On Thursday, January 3, 2013 9:21:19 AM UTC-7, Felipe Balbi wrote: > > Hi, > > On Wednesday, January 2, 2013 10:44:50 PM UTC+2, Gary Thomas wrote: > > I have a video adapter attached to my EHCI port which runs full > speed (480Mb/s) isochronous mode. Sadly, I never get any data > from the device (it uses the EM28xx driver). > This same device + driver works fine on my laptop and from what > I can tell looking at the module debug, it's failing when > waiting for the ISOC frame data to arrive. > > Should this work? I recall lots of discussion in the past about > ISOC transfers not working on certain OMAP devices... > > > which kernel are you using ? Have you tested mainline kernel ? > > > I'm using the TI/Ubuntu kernel ( ti-ubuntu-3.4.0-1489.17) > > Using the mainline would be hard as there is a lot in this kernel that > isn't in the mainline. > +Xavier, Nicolas, Herve Finally got a chance to try this out. I used uvccapture and luvcview for my tests. There is a problem with the TI/Ubuntu kernel. uvccapture works but luvcview segfaults after a few VIDEOC_QBUF operations (see log in the end). I don't see anything wrong with the USB traces though. After disabling all CONFIG_VIDEOBUF options in kernel config (except CONFIG_VIDEOBUF2_CORE=m, CONFIG_VIDEOBUF2_MEMOPS=m, CONFIG_VIDEOBUF2_VMALLOC=m) and recompiling the kernel, I could get luvcview to work. So the problem is not in USB EHCI but in the DMA/DMAbuf implementation of VIDEOBUF. cheers, -roger --log-- > luvcview > luvcview 0.2.6 > > init kbd. > SDL information:[ 37.955749] uvcvideo: uvc_v4l2_open > > Video driver: fbcon > Hardware surfaces are available (3072k video memory) > Device information: > Device path: /dev/video0 > [ 38.105346] usb 1-1.3: reset high-speed USB device number 4 using ehci-omap > [ 38.439178] uvcvideo: Resuming interface 0 > [ 38.443542] uvcvideo: Resuming interface 1 > [ 38.456970] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCAP) > [ 38.462310] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_FMT) > [ 38.467407] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_PARM) > [ 38.472717] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT) > [ 38.478057] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.484100] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.490112] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.496124] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.502075] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.508117] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.514129] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.520141] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.526092] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.532135] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.538146] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.544158] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.550140] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.556152] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.562164] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.568328] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.574340] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.580291] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.586334] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.592346] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.598358] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT) > [ 38.603698] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.609710] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.615753] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.621765] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.627716] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.633758] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.639770] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.645782] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.651763] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.657806] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.663940] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.669952] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.675964] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.681915] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.687927] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.693939] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.699951] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.705932] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.711975] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.717987] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FRAMESIZES) > [ 38.723999] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT) > [ 38.729309] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCAP) > [ 38.734741] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_INPUT) > [ 38.740051] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUMINPUT) > [ 38.746154] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCTRL) > [ 38.751617] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCAP) > Stream settings:[ 38.757171] uvcvideo: uvc_v4l2_ioctl( > VIDIOC_ENUM_FMT) > [ 38.764068] uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT) > Frame format: [ 38.769500] uvcvideo: uvc_v4l2_ioctl(MJPG > VIDIOC_TRY_FMT) > [ 38.776641] uvcvideo: Trying format 0x47504a4d (MJPG): 640x480. > [ 38.782928] uvcvideo: Using default frame interval 33333.3 us (30.0 fps). > [ 38.813446] uvcvideo: uvc_v4l2_ioctl(VIDIOC_S_FMT) > [ 38.818542] uvcvideo: Trying format 0x47504a4d (MJPG): 640x480. > [ 38.824859] uvcvideo: Using default frame interval 33333.3 us (30.0 fps). > [ 38.855560] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_PARM) > Frame size: [ 38.860748] uvcvideo: uvc_v4l2_ioctl(640x480 > VIDIOC_S_PARM) > [ 38.868072] uvcvideo: Setting frame interval to 1/30 (333333). > [ 38.897796] uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_PARM) > Frame rate: [ 38.903045] uvcvideo: uvc_v4l2_ioctl(30 fps > VIDIOC_REQBUFS) > [ 38.911071] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYBUF) > [ 38.916442] uvcvideo: uvc_v4l2_mmap > [ 38.920501] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYBUF) > [ 38.925903] uvcvideo: uvc_v4l2_mmap > [ 38.930023] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYBUF) > [ 38.935424] uvcvideo: uvc_v4l2_mmap > [ 38.939514] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYBUF) > [ 38.944915] uvcvideo: uvc_v4l2_mmap > [ 38.949005] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QBUF) > [ 38.953979] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QBUF) > [ 38.958984] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QBUF) > [ 38.963958] uvcvideo: uvc_v4l2_ioctl(VIDIOC_QBUF) > [ 39.029357] uvcvideo: uvc_v4l2_release > Segmentation fault -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
