feat(bluetooth/controller): support default tx power configurable on ESP32C2

components/bt/controller/esp32c2/Kconfig.in

@@ -540,3 +540,62 @@ config BT_LE_ROLE_OBSERVER_ENABLE
     default y
     help
         Enable observer role function.
+
+choice BT_LE_DFT_TX_POWER_LEVEL_DBM
+    prompt "BLE default Tx power level(dBm)"
+    default BT_LE_DFT_TX_POWER_LEVEL_P9
+    help
+        Specify default Tx power level(dBm).
+    config BT_LE_DFT_TX_POWER_LEVEL_N24
+        bool "-24dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_N21
+        bool "-21dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_N18
+        bool "-18dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_N15
+        bool "-15dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_N12
+        bool "-12dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_N9
+        bool "-9dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_N6
+        bool "-6dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_N3
+        bool "-3dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_N0
+        bool "0dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_P3
+        bool "+3dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_P6
+        bool "+6dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_P9
+        bool "+9dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_P12
+        bool "+12dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_P15
+        bool "+15dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_P18
+        bool "+18dBm"
+    config BT_LE_DFT_TX_POWER_LEVEL_P20
+        bool "+20dBm"
+endchoice
+
+config BT_LE_DFT_TX_POWER_LEVEL_DBM_EFF
+    int
+    default -24 if BT_LE_DFT_TX_POWER_LEVEL_N24
+    default -21 if BT_LE_DFT_TX_POWER_LEVEL_N21
+    default -18 if BT_LE_DFT_TX_POWER_LEVEL_N18
+    default -15 if BT_LE_DFT_TX_POWER_LEVEL_N15
+    default -12 if BT_LE_DFT_TX_POWER_LEVEL_N12
+    default -9 if BT_LE_DFT_TX_POWER_LEVEL_N9
+    default -6 if BT_LE_DFT_TX_POWER_LEVEL_N6
+    default -3 if BT_LE_DFT_TX_POWER_LEVEL_N3
+    default 0 if BT_LE_DFT_TX_POWER_LEVEL_N0
+    default 3 if BT_LE_DFT_TX_POWER_LEVEL_P3
+    default 6 if BT_LE_DFT_TX_POWER_LEVEL_P6
+    default 9 if BT_LE_DFT_TX_POWER_LEVEL_P9
+    default 12 if BT_LE_DFT_TX_POWER_LEVEL_P12
+    default 15 if BT_LE_DFT_TX_POWER_LEVEL_P15
+    default 18 if BT_LE_DFT_TX_POWER_LEVEL_P18
+    default 20 if BT_LE_DFT_TX_POWER_LEVEL_P20
+    default 0

components/bt/controller/esp32c2/esp_bt_cfg.h

@@ -241,7 +241,7 @@ extern "C" {
     #define RTC_FREQ_N                      (32000) /* in Hz */
 #endif // CONFIG_XTAL_FREQ_26
 
-#define BLE_LL_TX_PWR_DBM_N                 (9)
+#define BLE_LL_TX_PWR_DBM_N                 (CONFIG_BT_LE_DFT_TX_POWER_LEVEL_DBM_EFF)
 
 
 #define RUN_BQB_TEST                        (0)