Làm thế nào để cấu hình USB nhúng Linux?

Question

Tại sao không this định cấu hình đúng thiết bị USB của thiết bị file_storage?

Trên mục tiêu nhúng-linux:

/ # modprobe g_file_storage file=/dev/mmcblk0 
musb_hdrc: version 6.0, cppi-dma, peripheral, debug=0 
musb_hdrc: USB Peripheral mode controller at fec64000 using DMA, IRQ 12 
g_file_storage gadget: File-backed Storage Gadget, version: 20 November 2008 
g_file_storage gadget: Number of LUNs=1 
g_file_storage gadget-lun0: ro=0, file: /dev/mmcblk0 

/# lsusb 
lsusb: /sys/bus/usb/devices: No such file or directory 

/# cat /lib/modules/2.6.32-17-ridgerun/modules.dep | grep usb 
kernel/drivers/usb/otg/nop-usb-xceiv.ko: 
kernel/drivers/usb/musb/musb_hdrc.ko: kernel/drivers/usb/otg/nop-usb-xceiv.ko 
kernel/drivers/usb/gadget/g_file_storage.ko: kernel/drivers/usb/musb/musb_hdrc.ko kernel/drivers/usb/otg/nop-usb-xceiv.ko 

Trên 10,04 máy chủ Ubuntu:

$ fgrep USB $DEVDIR/kernel/linux*/.config | grep -v '^#' 
CONFIG_USB_SUPPORT=y 
CONFIG_USB_ARCH_HAS_HCD=y 
CONFIG_USB_MUSB_HDRC=m 
CONFIG_USB_MUSB_SOC=y 
CONFIG_USB_MUSB_PERIPHERAL=y 
CONFIG_USB_GADGET_MUSB_HDRC=y 
CONFIG_USB_TI_CPPI_DMA=y 
CONFIG_USB_GADGET=m 
CONFIG_USB_GADGET_VBUS_DRAW=2 
CONFIG_USB_GADGET_SELECTED=y 
CONFIG_USB_GADGET_DUALSPEED=y 
CONFIG_USB_FILE_STORAGE=m 
CONFIG_USB_OTG_UTILS=y 
CONFIG_NOP_USB_XCEIV=m 

$ lsusb 
Bus 002 Device 003: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port 
Bus 002 Device 002: ID 8087:0024 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 
Bus 001 Device 005: ID 058f:6362 Alcor Micro Corp. Hi-Speed 21-in-1 Flash Card Reader/Writer (Internal/External) 
Bus 001 Device 004: ID 04ca:003a Lite-On Technology Corp. 

Answer 1

cần thiết usb_composite_msd_acm.patch (giải quyết với sự giúp đỡ từ RidgeRun).