Module                  Size  Used by
hci_bcm4377            32768  0
hci_uart               49152  0
btbcm                  24576  1 hci_uart
serdev                 16384  1 hci_uart
bcm203x                12288  0
bluetooth             782336  4 hci_bcm4377,hci_uart,btbcm,bcm203x