Hello experts, I'm trying to implement two functions on single udc configuration i.e uvc device class and mass storage. individually it is working fine but coming to multi role it is failing. kernel 4.4: mount -t debugfs debugfs /mnt/ echo "device" > /mnt/488d0000.usb/mode modprobe -v configfs modprobe -v libcomposite sleep 2 cd /sys/kernel/config/usb_gadget mkdir g1 cd g1 echo "0x1d6b" > idVendor echo "0x0104" > idProduct mkdir strings/0x409 echo "0123456789" > strings/0x409/serialnumber echo "TI Inc." > strings/0x409/manufacturer echo "MS+UVC gadget" > strings/0x409/product modprobe -v usb_f_mass_storage mkdir functions/mass_storage.ms0 # create backing store(s): in this example 2 LUN's 16MB each dd bs=1M count=16 if=/dev/zero of=/tmp/lun0.img # 16MB chmod 777 /tmp/lun0.img modprobe -v usb_f_uvc mkdir functions/uvc.usb0 mkdir configs/c.1 mkdir configs/c.1/strings/0x409 echo "mass-storage + uvc" > configs/c.1/strings/0x409/configuration echo 120 > configs/c.1/MaxPower mkdir functions/uvc.usb0/control/header/h cd functions/uvc.usb0/control/ ln -s header/h class/fs ln -s header/h class/ss cd ../../../ mkdir -p functions/uvc.usb0/streaming/uncompressed/u/360p cat <<EOF > functions/uvc.usb0/streaming/uncompressed/u/360p/dwFrameInterval 666666 1000000 5000000 EOF mkdir functions/uvc.usb0/streaming/header/h cd functions/uvc.usb0/streaming/header/h ln -s ../../uncompressed/u cd ../../class/fs ln -s ../../header/h cd ../../class/hs ln -s ../../header/h cd ../../../control cd ../../../ echo /tmp/lun0.img > functions/mass_storage.ms0/lun.0/file echo 1 > functions/mass_storage.ms0/lun.0/removable ln -s functions/mass_storage.ms0 configs/c.1/ ln -s functions/uvc.usb0 configs/c.1/ echo "488d0000.usb" > UDC ===================== dmesg: ===================== insmod /lib/modules/4.4.23/kernel/fs/configfs/configfs.ko insmod /lib/modules/4.4.23/kernel/drivers/usb/gadget/libcomposite.ko insmod /lib/modules/4.4.23/kernel/drivers/usb/gadget/function/usb_f_mass_storage.ko [ 58.376548] Mass Storage Function, version: 2009/09/11 [ 58.381720] LUN: removable file: (no medium) 16+0 records in 16+0 records out insmod /lib/modules/4.4.23/kernel/drivers/media/v4l2-core/videobuf2-vmalloc.ko insmod /lib/modules/4.4.23/kernel/drivers/usb/gadget/function/usb_f_uvc.ko [ 58.525130] configfs-gadget gadget: uvc_function_bind # modprobe vivid # ./uvc-gadget -u /dev/video0 -v /dev/video1 V4L2 device is vivid on bus platform:vivid-000 V4L2: Getting current format: YUYV 640x360 V4L2: Setting format to: YUYV 640x360 V4L2: Getting current format: YUYV 640x360 v4l2 open succeeded, file descriptor = 3 uvc device is dwc3-gadget on bus gadget uvc open succeeded, file descriptor = 4 V4L2: Buffer 0 mapped at address 0xb6e26000. V4L2: Buffer 1 mapped at address 0xb6db5000. V4L2: 2 buffers allocated. [ 267.245560] configfs-gadget gadget: uvc_function_disable [ 267.492271] configfs-gadget gadget: high-speed config #1: c [ 267.497885] configfs-gadget gadget: uvc_function_set_alt(1, 0) [ 267.503742] configfs-gadget gadget: reset UVC Control [ 267.508822] configfs-gadget gadget: uvc_function_set_alt(2, 0) [ 267.516769] configfs-gadget gadget: uvc_function_set_alt(2, 0) ===================================== Host side ======================================= [105697.232059] usb 1-3: new high-speed USB device number 91 using ehci-pci [105697.366556] usb 1-3: New USB device found, idVendor=1d6b, idProduct=0104 [105697.366563] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [105697.366567] usb 1-3: Product: MS+UVC gadget [105697.366571] usb 1-3: Manufacturer: TI Inc. [105697.366574] usb 1-3: SerialNumber: 0123456789 [105697.390430] usb-storage 1-3:1.0: USB Mass Storage device detected [105697.390625] scsi11 : usb-storage 1-3:1.0 [105697.391255] uvcvideo: Found UVC 1.00 device MS+UVC gadget (1d6b:0104) [105697.400076] uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround. [105697.400573] uvcvideo: Failed to query (129) UVC probe control : -32 (exp. 26). [105697.400582] uvcvideo: Failed to initialize the device (-5). [105698.389100] scsi 11:0:0:0: Direct-Access Linux File-Stor Gadget 0404 PQ: 0 ANSI: 2 [105698.389676] sd 11:0:0:0: Attached scsi generic sg2 type 0 [105698.390850] sd 11:0:0:0: [sdb] 32768 512-byte logical blocks: (16.7 MB/16.0 MiB) [105698.391539] sd 11:0:0:0: [sdb] Write Protect is off [105698.391550] sd 11:0:0:0: [sdb] Mode Sense: 0f 00 00 00 [105698.392557] sd 11:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [105698.403242] sdb: unknown partition table [105698.409739] sd 11:0:0:0: [sdb] Attached SCSI removable disk Can anybody tell what i have missed, first is it possible have uvc + ms. regards, Ganesh Biradar -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
