drivers: 15.4: nrf5: Add OpenThread support to 802.15.4 driver

Initially add support for OpenThread only for nRF 802.15.4 radio driver.

Signed-off-by: Kamil Sroka <[email protected]>

Author: KaSroka

drivers/ieee802154/CMakeLists.txt

@@ -4,3 +4,12 @@ zephyr_sources_ifdef(CONFIG_IEEE802154_UPIPE ieee802154_uart_pipe.c)
 zephyr_sources_ifdef(CONFIG_IEEE802154_MCR20A ieee802154_mcr20a.c)
 zephyr_sources_ifdef(CONFIG_IEEE802154_NRF5 ieee802154_nrf5.c)
 zephyr_sources_ifdef(CONFIG_IEEE802154_CC1200 ieee802154_cc1200.c)
+
+if(CONFIG_NET_L2_OPENTHREAD)
+  # This driver calls DEVICE_INIT with the context of openthread. The
+  # context of openthread is defined in one of OpenThread's header
+  # files so we need express that this driver depends on OpenThread
+  # being downloaded to make sure that we don't build this driver
+  # before all of it's header file dependencies are met.
+  add_dependencies(${ZEPHYR_CURRENT_LIBRARY} ot)
+endif()

drivers/ieee802154/Kconfig

@@ -12,7 +12,7 @@
 menuconfig IEEE802154
 	bool "IEEE 802.15.4 drivers options"
 	default n
-	default y if NET_L2_IEEE802154
+	default y if NET_L2_IEEE802154 || NET_L2_OPENTHREAD
 
 if IEEE802154
 

drivers/ieee802154/ieee802154_nrf5.c

@@ -21,6 +21,10 @@
 #include <net/net_if.h>
 #include <net/net_pkt.h>
 
+#if defined(CONFIG_NET_L2_OPENTHREAD)
+#include <net/openthread.h>
+#endif
+
 #include <misc/byteorder.h>
 #include <string.h>
 #include <random/rand32.h>
@@ -90,7 +94,9 @@ static void nrf5_rx_thread(void *arg1, void *arg2, void *arg3)
 		 * The last 2 bytes contain LQI or FCS, depending if
 		 * automatic CRC handling is enabled or not, respectively.
 		 */
-		if (IS_ENABLED(CONFIG_IEEE802154_RAW_MODE)) {
+		if (IS_ENABLED(CONFIG_IEEE802154_RAW_MODE) ||
+		    IS_ENABLED(CONFIG_NET_L2_OPENTHREAD)) {
+
 			pkt_len = nrf5_radio->rx_psdu[0];
 		} else {
 			pkt_len = nrf5_radio->rx_psdu[0] -  NRF5_FCS_LENGTH;
@@ -423,20 +429,30 @@ static struct ieee802154_radio_api nrf5_radio_api = {
 	.tx = nrf5_tx,
 };
 
-#if defined(CONFIG_IEEE802154_RAW_MODE)
-DEVICE_AND_API_INIT(nrf5_154_radio, CONFIG_IEEE802154_NRF5_DRV_NAME,
-		    nrf5_init, &nrf5_data, &nrf5_radio_cfg,
-		    POST_KERNEL, CONFIG_IEEE802154_NRF5_INIT_PRIO,
-		    &nrf5_radio_api);
-#else
+#if defined(CONFIG_NET_L2_IEEE802154)
+#define L2 IEEE802154_L2
+#define L2_CTX_TYPE NET_L2_GET_CTX_TYPE(IEEE802154_L2)
+#define MTU 125
+#elif defined(CONFIG_NET_L2_OPENTHREAD)
+#define L2 OPENTHREAD_L2
+#define L2_CTX_TYPE NET_L2_GET_CTX_TYPE(OPENTHREAD_L2)
+#define MTU 1280
+#endif
+
+#if defined(CONFIG_NET_L2_IEEE802154) || defined(CONFIG_NET_L2_OPENTHREAD)
 NET_DEVICE_INIT(nrf5_154_radio, CONFIG_IEEE802154_NRF5_DRV_NAME,
 		nrf5_init, &nrf5_data, &nrf5_radio_cfg,
 		CONFIG_IEEE802154_NRF5_INIT_PRIO,
-		&nrf5_radio_api, IEEE802154_L2,
-		NET_L2_GET_CTX_TYPE(IEEE802154_L2), 125);
+		&nrf5_radio_api, L2,
+		L2_CTX_TYPE, MTU);
 
 NET_STACK_INFO_ADDR(RX, nrf5_154_radio,
 		    CONFIG_IEEE802154_NRF5_RX_STACK_SIZE,
 		    CONFIG_IEEE802154_NRF5_RX_STACK_SIZE,
 		    nrf5_data.rx_stack, 0);
+#else
+DEVICE_AND_API_INIT(nrf5_154_radio, CONFIG_IEEE802154_NRF5_DRV_NAME,
+		    nrf5_init, &nrf5_data, &nrf5_radio_cfg,
+		    POST_KERNEL, CONFIG_IEEE802154_NRF5_INIT_PRIO,
+		    &nrf5_radio_api);
 #endif