Bluetooth: Add debug config options for all current sub-modules

We want to be able to do fine-grained enabling of debug logs for the
various Bluetooth sub-modules. They all default to 'n' so an app
writer would need to go and enable the specific ones that they're
interested in.

Change-Id: I17105adf133d441dfc811bdd66a00be015813679
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

make/target/kconfig/modules/bluetooth.kconf

@@ -67,6 +67,42 @@ config	BLUETOOTH_DEBUG_BUF
 	help
 	  This option enables debug support for Bluetooth buffers.
 
+config	BLUETOOTH_DEBUG_CONN
+	bool
+	prompt "Bluetooth connection debug"
+	depends on BLUETOOTH_DEBUG
+	default n
+	help
+	  This option enables debug support for Bluetooth
+	  connection handling.
+
+config	BLUETOOTH_DEBUG_L2CAP
+	bool
+	prompt "Bluetooth L2CAP debug"
+	depends on BLUETOOTH_DEBUG
+	default n
+	help
+	  This option enables debug support for the Bluetooth
+	  L2ACP layer.
+
+config	BLUETOOTH_DEBUG_SMP
+	bool
+	prompt "Bluetooth Security Manager Protocol (SMP) debug"
+	depends on BLUETOOTH_DEBUG
+	default n
+	help
+	  This option enables debug support for the Bluetooth
+	  Security Manager Protocol (SMP).
+
+config	BLUETOOTH_DEBUG_ATT
+	bool
+	prompt "Bluetooth Attribute Protocol (ATT) debug"
+	depends on BLUETOOTH_DEBUG
+	default n
+	help
+	  This option enables debug support for the Bluetooth
+	  Attribute Protocol (ATT).
+
 config	BLUETOOTH_UART
 	bool
 	prompt "Bluetooth UART driver"

net/bluetooth/att.c

@@ -46,6 +46,11 @@
 #include "l2cap.h"
 #include "att.h"
 
+#if !defined(CONFIG_BLUETOOTH_DEBUG_ATT)
+#undef BT_DBG
+#define BT_DBG(fmt, ...)
+#endif
+
 static void send_err_rsp(struct bt_conn *conn, uint8_t req, uint16_t handle,
 			 uint8_t err)
 {

net/bluetooth/conn.c

@@ -44,6 +44,11 @@
 #include "conn.h"
 #include "l2cap.h"
 
+#if !defined(CONFIG_BLUETOOTH_DEBUG_CONN)
+#undef BT_DBG
+#define BT_DBG(fmt, ...)
+#endif
+
 #define MAX_CONN_COUNT 1
 static struct bt_conn conns[MAX_CONN_COUNT];
 

net/bluetooth/l2cap.c

@@ -45,6 +45,11 @@
 #include "att.h"
 #include "smp.h"
 
+#if !defined(CONFIG_BLUETOOTH_DEBUG_L2CAP)
+#undef BT_DBG
+#define BT_DBG(fmt, ...)
+#endif
+
 #define LE_CONN_MIN_INTERVAL	0x0028
 #define LE_CONN_MAX_INTERVAL	0x0038
 #define LE_CONN_LATENCY		0x0000

net/bluetooth/smp.c

@@ -44,6 +44,11 @@
 #include "l2cap.h"
 #include "smp.h"
 
+#if !defined(CONFIG_BLUETOOTH_DEBUG_SMP)
+#undef BT_DBG
+#define BT_DBG(fmt, ...)
+#endif
+
 struct bt_buf *bt_smp_create_pdu(struct bt_conn *conn, uint8_t op, size_t len)
 {
 	struct bt_smp_hdr *hdr;