Hi Tranphong, It seems the consensus is that there is no easy ways (such as HCI protocol conversion) to do this. I don't believe Realtek will be that keen on implementing a vendor lib, especially given that Android seems to have changed the HAL interface with 8.0, so I may have no choice but to do it myself.
Thanks for your response though, it was very helpful. If you happen to have any references (Github links, etc) on the HCI/USB interface you mentioned, I'd be very grateful if you could share them so I could use it as a starting point. Tranphong Vu writes: > Hi friend, > It seem you miss vendor lib . I assume your Bluetooth device driver already > probed and creat a usb hci device. Your vendor lib will talk to usb hci > device. > In the past, I met a hci USB Bluetooth device. It’s kernel driver create a > device at /dev/* and I have a vendor lib to talk to this device. It’s name > seem like libbt_vendor. > In your case I think you need to check the driver that creat hci0 device, > check all feature that driver support in ioctl, open ... and check the > interface that fluoride requires for a Bluetooth vendor lib. Then follow > this to implement Bluetooth vendor lib. I don’t think it is a easy job . > You should contact the ihv of your Bluetooth device and ask them a > Bluetooth vendor lib. > > Vào Th 2, 25 thg 2, 2019 lúc 22:00 <benjamin.lindqv...@endian.se> đã viết: > >> We have a board based on imx6 sabresd that we're porting Android to. >> Thanks to a regression in the NXP Oreo BSP we had to revert to Nougat. >> >> This board has a mini PCIE Bluetooth module (RTL8821ae) that talks HCI >> USB. The driver seems to be integrated (hci0 file gets created etc) but I >> am not sure how to integrate the module further. bt_vendor.conf only >> contains references to a UART port and this device doesn't use UART. >> >> It was my impression that Bluedroid lacked USB HCI support, but that >> Fluoride added it. Of course, documentation on Fluoride is impossible to >> find, so I'm not even sure this is true. I've tried going the opposite >> direction by doing HCI protocol conversion, using a patched socat that >> supports HCI, but I can't get that to work (socat closes the socket with >> -ENETDOWN when I start bluetooth_manager). I've also found a git repo, >> "libbt-usb", that claims to convert HCI USB to HCI UART, but I can't get it >> to build on Nougat. >> >> Can anyone point me to a reference describing what is needed to integrate >> this card into the Android stack? Is it even possible/feasible? Any help >> would be greatly appreciated... >> >> -- >> -- >> unsubscribe: android-porting+unsubscr...@googlegroups.com >> website: http://groups.google.com/group/android-porting >> >> --- >> You received this message because you are subscribed to the Google Groups >> "android-porting" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to android-porting+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> -- Benjamin Lindqvist Endian Technologies AB -- -- unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting --- You received this message because you are subscribed to the Google Groups "android-porting" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-porting+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
