Hi, we use gadget driver gadgetfs and implement a high-level protocol over USB. Our hardware provides an USB WCID device [1]. But the recent state of gadgetfs is unclear. There are a couple of problems and gadgetfs does not support USB3 SuperSpeed. I guess the driver will be removed from kernel. Is this correct? I digged around and found functionfs which has similar functions. And I found notes [2] that it is not to hard to convert a program from gadgetfs to functionfs. I looked at tools/usb/ffs-test.c implementation and in file f_fs.c. If I correctly understand the driver, then the functionfs driver gets USB descriptors only at the begining. But I do not understand how I can add WCID specific descriptors. E.g. - OS String Descriptor [3] - ID Feature Descriptor [4] - Extended Properties Feature Descriptor [5] Can someone show me an example or give me a hint how I can add this descriptors to functionfs driver? Or is there an other solution(gadget) for this problem? Regards, Mario [1] https://github.com/pbatard/libwdi/wiki/WCID-Devices [2] http://www.spinics.net/lists/linux-usb/msg69097.html [3] https://github.com/pbatard/libwdi/wiki/WCID-Devices#Microsoft_OS_String_Descriptor Table 1 [4] https://github.com/pbatard/libwdi/wiki/WCID-Devices#Microsoft_Compatible_ID_Feature_Descriptor Table 2 [5] https://github.com/pbatard/libwdi/wiki/WCID-Devices#Microsoft_Compatible_ID_Feature_Descriptor Table 4 -- 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
