[GUIDE] How to port Bluez to Kitkat, Lollipop & Marshmallow

  <remote name="gcode" fetch="https://code.google.com/p/"/>
  <remote name="korg" fetch="git://git.kernel.org/pub/scm/bluetooth/"/>
  <remove-project name="android_external_bluetooth_bluedroid"/>
  <project remote="korg" path="external/bluetooth/bluez" name="bluez" group="pdk" revision="master"/>
  <project remote="korg" path="external/bluetooth/sbc" name="sbc" group="pdk" revision="master"/>
  <project remote="gcode" path="external/bluetooth/glib" name="aosp-bluez.glib" group="pdk" revision="master"/>

  <remove-project name="platform/external/bluetooth/bluedroid"/>

#
# Bluetooth tools for setup and debug
#			daniel_hk
LOCAL_PATH := external/bluetooth

# Retrieve BlueZ version from configure.ac file
BLUEZ_VERSION := $(shell grep ^AC_INIT $(LOCAL_PATH)/bluez/configure.ac | cpp -P -D'AC_INIT(_,v)=v')

# Specify pathmap for glib
#pathmap_INCL += glib:external/bluetooth/glib

# Specify common compiler flags
BLUEZ_COMMON_CFLAGS := -DVERSION=\"$(BLUEZ_VERSION)\" \
	-DSTORAGEDIR=$(ANDROID_STORAGEDIR) \

# Disable warnings enabled by Android but not enabled in autotools build
BLUEZ_COMMON_CFLAGS += -Wno-pointer-arith -Wno-missing-field-initializers

# @ daniel, extra tools for CSR
ifeq ($(BOARD_HAVE_BLUETOOTH_CSR),true)

#
# bccmd
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= \
	bluez/lib/hci.c \
	bluez/lib/bluetooth.c \
	bluez/tools/bccmd.c \
	bluez/tools/csr.c \
	bluez/tools/csr_3wire.c \
	bluez/tools/csr_bcsp.c \
	bluez/tools/csr_hci.c \
	bluez/tools/csr_h4.c \
	bluez/tools/csr_usb.c \
	bluez/tools/ubcsp.c

LOCAL_CFLAGS := $(BLUEZ_COMMON_CFLAGS)

LOCAL_C_INCLUDES:=\
	$(LOCAL_PATH)/bluez \
	$(LOCAL_PATH)/bluez/lib \
	$(LOCAL_PATH)/bluez/tools \
	$(LOCAL_PATH)/bluez/src \
	$(LOCAL_PATH)/bluez/src/shared \

LOCAL_MODULE:=bccmd

include $(BUILD_EXECUTABLE)

#
# sdptool
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= \
	bluez/lib/hci.c \
	bluez/lib/bluetooth.c \
	bluez/lib/sdp.c \
	bluez/tools/sdptool.c \
	bluez/src/sdp-xml.c

LOCAL_CFLAGS := $(BLUEZ_COMMON_CFLAGS)

LOCAL_C_INCLUDES:=\
	$(LOCAL_PATH)/bluez \
	$(LOCAL_PATH)/bluez/lib \
	$(LOCAL_PATH)/bluez/tools \
	$(LOCAL_PATH)/bluez/src \
	$(LOCAL_PATH)/bluez/src/shared \

LOCAL_C_INCLUDES += \
	$(call include-path-for, glib) \
	$(call include-path-for, glib)/glib \

LOCAL_SHARED_LIBRARIES := \
	libglib \

LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES)
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE:=sdptool

include $(BUILD_EXECUTABLE)
endif

[I]** in function: handle_pin_request[/I]
	bt_hal_cbacks->pin_request_cb(addr, name, ev->class_of_dev, 0);	// @ daniel, added 0 for cm11

[I]** in function: pin_request_cb[/I]
static void pin_request_cb(bt_bdaddr_t *remote_bd_addr, bt_bdname_t *bd_name,
						uint32_t cod, uint8_t secure)	// @ daniel, added secure from cm11
{
	/* Store for command completion */
	bt_bdaddr_t2str(remote_bd_addr, last_remote_addr);
	pin_request_addr = *remote_bd_addr;

	haltest_info("%s: remote_bd_addr=%s bd_name=%s cod=%06x secure=%02x\n", __func__,
					last_remote_addr, bd_name->name, cod, secure);	// @ daniel, added
	terminal_prompt_for("Enter pin: ", pin_request_answer);
}

./build-k <your device>

$ su				-- [I][COLOR="SeaGreen"]root user is required[/COLOR][/I]
# echo "1" > /sys/class/rfkill/rfkill0/state
# bccmd -t bcsp -d /dev/ttySAC0 -b 115200 psload -r /system/etc/PSConfig_8811.psr
  Loading 0x212c ... done
  Loading 0x212d ... done
	...
  Loading PSKEY_CLOCK_REQUEST_ENABLE ... done
  Loading PSKEY_UART_HOST_WAKE ... done
# hciattach -p /dev/ttySAC0 bcsp 3000000 flow
  Device setup complete
# hciconfig hci0 up
# hcitool scan			-- [I][COLOR="SeaGreen"]turn on a device's bluetooth for testing[/COLOR][/I]
	Nexus 4			-- [I][COLOR="SeaGreen"]found the device means bluetooth is working now[/COLOR][/I]

#!/system/bin/sh
# modified by daniel_hk

LOG_TAG="CSR8811-HCI"
BTUART_PORT=/dev/ttySAC0
BTSTATE=/sys/class/rfkill/rfkill0/state
PSCONFIG=/system/etc/PSConfig_8811.psr

logi ()
{
  /system/bin/log -t $LOG_TAG -p i ": $@"
}

loge ()
{
  /system/bin/log -t $LOG_TAG -p e ": $@"
}

failed ()
{
  loge "$1: exit code $2"
  exit $2
}

#Enable power of csr chip
echo "1" > $BTSTATE

# PS Config with bccmd
logwrapper /system/bin/bccmd -t bcsp -d $BTUART_PORT -b 115200 psload -r $PSCONFIG
case $? in
  0) logi "bccmd init port....done";;
  *) failed "port: $BTUART_PORT - bccmd failed" $?;
     exit $?;;
esac

# attach HCI 
logwrapper /system/bin/hciattach -p $BTUART_PORT bcsp 3000000 flow
case $? in
  0) logi "hci attached to : $BTUART_PORT";;
  *) failed "port: $BTUART_PORT - hciattach failed" $?;
     exit $?;;
esac

exit 0

on boot
    start bt_init

on property:init.svc.bluetoothd=running
    start hci0_up

on property:init.svc.bluetoothd=stopped
    start hci0_down

service bt_init /system/bin/logwrapper /system/bin/sh /system/etc/init.bt.sh
    class main
    user root
    group bluetooth net_bt_admin system
    disabled
    oneshot

service hci0_up /system/bin/logwrapper /system/xbin/hciconfig hci0 up
    class main
    group bluetooth
    disabled
    oneshot

service hci0_down /system/bin/logwrapper /system/xbin/hciconfig hci0 down
    class main
    group bluetooth
    disabled
    oneshot

import init.bluetooth.rc