Hi Community,
My environment is Freescale i.MX6SL EVK board (as USB peripheral
device), which is based on kernel 3.10.17. i.MX6SL uses ChipIdea
dual-role controller.
My problem is that gadget drivers g_ether and g_audio (UAC1 enabled) can
NOT be detected by Windows 7 natively, while g_mass_storage, g_serial,
g_hid can be detected by Windows 7 natively.
1) I found that both Ether and USB Audio uses .bAlternateSetting, while
Mass Storage, Serial and HID do NOT. I am wondering if this is related
to how Gadget framework handles USB_REQ_SET_INTERFACE request?
2) Also, I am not sure if it is related to ChipIdea quirk
(gadget_supports_altsettings in file gadget_chips.h)?
Any suggestions / comments on this? Thanks.
--
Thanks,
Xuebing Wang
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