Does AM335x Linux USB Gadget Mode support HID, Printer mode?

HID and Printer gadget is not tested but they should work. Please post the details if you face any issue.

Ajay

Hi Ajay,

Currently I rebuild the kernel uImage,

add some kernel configuration see below list

 USB Support ---> Remove "USB Mass Storage support"

                                Add "USB Gadget Support --> USB Gadget Drivers (HID Gadget)"

Then make the kernel, but get below error message

scripts/kconfig/conf --silentoldconfig Kconfig
  CHK     include/linux/version.h
  CHK     include/generated/utsrelease.h
make[1]: `include/generated/mach-types.h' is up to date.
  CALL    scripts/checksyscalls.sh
  CHK     include/generated/compile.h
  GZIP    kernel/config_data.gz
  CHK     kernel/config_data.h
  LD      drivers/usb/gadget/built-in.o
drivers/usb/gadget/g_dbgp.o: In function `usb_ep_autoconfig':
dbgp.c:(.text+0xb84): multiple definition of `usb_ep_autoconfig'
drivers/usb/gadget/g_hid.o:hid.c:(.text+0x334c): first defined here
drivers/usb/gadget/g_dbgp.o: In function `usb_ep_autoconfig_reset':
dbgp.c:(.text+0xb9c): multiple definition of `usb_ep_autoconfig_reset'
drivers/usb/gadget/g_hid.o:hid.c:(.text+0x3364): first defined here
drivers/usb/gadget/g_dbgp.o: In function `usb_ep_autoconfig_ss':
dbgp.c:(.text+0xa10): multiple definition of `usb_ep_autoconfig_ss'
drivers/usb/gadget/g_hid.o:hid.c:(.text+0x31d8): first defined here
make[3]: *** [drivers/usb/gadget/built-in.o] Error 1
make[2]: *** [drivers/usb/gadget] Error 2
make[1]: *** [drivers/usb] Error 2
make: *** [drivers] Error

Are you willing to guide me to solve this issue?

Shine

You can refer below page for this

[1] http://processors.wiki.ti.com/index.php/UsbConfigControllerDriver

[2] http://processors.wiki.ti.com/index.php/UsbConfigDevCDC  [select HID or Printer gadget instead]

Regards,
Ajay

Hi Ajay,

I follow the UsbCongigDevCDC page to select HID

<*> USB Peripheral Controller (Inventra HDRC USB Peripheral (TI, ADI, ...)) --->

<*> USB Gadget Drivers (HID Gadget)

       (X) HID Gadget

Then build the kernel image, will occur below error.

LD      drivers/usb/gadget/built-in.odrivers/usb/gadget/g_dbgp.o

drivers/usb/gadget/g_dbgp.o: In function `usb_ep_autoconfig':
dbgp.c:(.text+0xb84): multiple definition of `usb_ep_autoconfig'
drivers/usb/gadget/g_hid.o:hid.c:(.text+0x334c): first defined here
drivers/usb/gadget/g_dbgp.o: In function `usb_ep_autoconfig_reset':
dbgp.c:(.text+0xb9c): multiple definition of `usb_ep_autoconfig_reset'
drivers/usb/gadget/g_hid.o:hid.c:(.text+0x3364): first defined here
drivers/usb/gadget/g_dbgp.o: In function `usb_ep_autoconfig_ss':
dbgp.c:(.text+0xa10): multiple definition of `usb_ep_autoconfig_ss'
drivers/usb/gadget/g_hid.o:hid.c:(.text+0x31d8): first defined here
make[3]: *** [drivers/usb/gadget/built-in.o] Error 1
make[2]: *** [drivers/usb/gadget] Error 2
make[1]: *** [drivers/usb] Error 2
make: *** [drivers] Error 2
cp: cannot stat `/home/user/ti-sdk-am335x-evm-05.03.02.00/board-support/linux-3.1.0-psp04.06.00.03.sdk/arch/arm/boot/uImage': No such file or directory

If I select below list item,

<M> USB Gadget Drivers

<M> HID Gadget

The build process will succes,  but on drivers/usb/gadget

I only see below *.o files

built-in.o
dbgp.o
g_dbgp.o
udc-core.o

I can't find xxx.ko

If I want insert HID gadget module,What shall I do?

Shine.

Hi Ajay,

Would you help us to test the HID gadget driver on AM335x?

Best regards,

Shine

Shine,

As I know gadgets must be built as kernel modules. Just ethernet gadget can be built-in in kernel image. Maybe something has changed in recent kernels, I do not know, but for sure no more than a single gadget can be built-in at a time. So your kernel configuration is quite surprising...

In any case I suggest to build them as modules. You need to make targets modules and modules_install, see wiki on how to. Then you can load/unload them at run time, or at init with some init scripts. Hope this can help.

I also suggest to write about these "generic" topics on Linux forum, more than on platform-specific forums.

Regards

Max

Shine,

please share the .config from you source tree.

Ajay

Ajay,

Please see attache file.

shine

2605.config.txt