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external/bluetooth/bluedroid).
1. Split the original external/bluetooth/bluedroid/vendor directory to two parts: external/bluetooth/bluedroid/hci and vendor/broadcom/libbt-vendor. Each part produces a .so library (libbt-hci.so and libbt-vendor.so).
2. libbt-hci.so contains:
+ HCI H4 send & receive functions
+ Userial read & write functions
+ LPM common logic operations
+ btsnoop functions.
3. No build-time (.txt) and run-time (.conf) configuration for libbt-hci.so.
4. libbt-vendor.so contains:
+ firmware patch download function
+ SCO configuration
+ LPM VSC and BT_WAKE control
+ UART port open
+ upio control for BT chip power on/off.
5. libbt-vendor.so has build-time and run-time configuration support.
Change-Id: I61d55c75c66d25459d80893a5f72bccce2b54770
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