From 0651141d84be40a2cceef6b1245355060ec00c7a Mon Sep 17 00:00:00 2001
From: Markus Becker <markus.becker@tridonic.com>
Date: Tue, 17 Mar 2020 17:51:57 +0100
Subject: [PATCH] net: openthread: Add NCP start-up and required platform
 changes

When NCP starts-up some of the initialisation functions of a regular
OpenThread device do not need to be called, because they get triggered
by wpantund via UART. Instead NCP initialisation needs to be called.

A small typo has been fixed as well.

Also initialisation for raw link packet interface has been added. Can be
used for picking up 802.15.4 frames and interpreting them in the
application.

Signed-off-by: Markus Becker <markus.becker@tridonic.com>
---
 subsys/net/l2/openthread/openthread.c         | 34 ++++++++++++++-----
 subsys/net/lib/openthread/platform/misc.c     |  5 +++
 subsys/net/lib/openthread/platform/platform.c |  4 +++
 subsys/net/lib/openthread/platform/radio.c    | 18 ++++++++++
 4 files changed, 53 insertions(+), 8 deletions(-)

diff --git a/subsys/net/l2/openthread/openthread.c b/subsys/net/l2/openthread/openthread.c
index bc441ca8d4c..d92bd067ae6 100644
--- a/subsys/net/l2/openthread/openthread.c
+++ b/subsys/net/l2/openthread/openthread.c
@@ -22,6 +22,8 @@ LOG_MODULE_REGISTER(net_l2_openthread, CONFIG_OPENTHREAD_L2_LOG_LEVEL);
 #include <openthread/cli.h>
 #include <openthread/ip6.h>
 #include <openthread/link.h>
+#include <openthread/link_raw.h>
+#include <openthread/ncp.h>
 #include <openthread/message.h>
 #include <openthread/platform/diag.h>
 #include <openthread/tasklet.h>
@@ -196,7 +198,7 @@ void ot_receive_handler(otMessage *aMessage, void *context)
 		pkt_list_add(ot_context, pkt);
 		pkt = NULL;
 	} else {
-		NET_INFO("Pacet list is full");
+		NET_INFO("Packet list is full");
 	}
 out:
 	if (pkt) {
@@ -341,7 +343,11 @@ static void openthread_start(struct openthread_context *ot_context)
 		otLinkSetPollPeriod(ot_context->instance, OT_POLL_PERIOD);
 	}
 
-	if (otDatasetIsCommissioned(ot_instance)) {
+	if (IS_ENABLED(CONFIG_OPENTHREAD_NCP)) {
+		/* In NCP mode wpantund will instruct what to do. */
+		NET_DBG("OpenThread NCP.");
+		return;
+	} else if (otDatasetIsCommissioned(ot_instance)) {
 		/* OpenThread already has dataset stored - skip the
 		 * configuration.
 		 */
@@ -401,13 +407,25 @@ static int openthread_init(struct net_if *iface)
 		platformShellInit(ot_context->instance);
 	}
 
-	otIp6SetEnabled(ot_context->instance, true);
+	if (IS_ENABLED(CONFIG_OPENTHREAD_NCP)) {
+		otNcpInit(ot_context->instance);
+	}
 
-	otIp6SetReceiveFilterEnabled(ot_context->instance, true);
-	otIp6SetReceiveCallback(ot_context->instance,
-				ot_receive_handler, ot_context);
-	otSetStateChangedCallback(ot_context->instance,
-				  &ot_state_changed_handler, ot_context);
+	if (IS_ENABLED(CONFIG_OPENTHREAD_RAW)) {
+		otLinkRawSetEnable(ot_context->instance, true);
+	} else {
+		otIp6SetEnabled(ot_context->instance, true);
+	}
+
+	if (!IS_ENABLED(CONFIG_OPENTHREAD_NCP)) {
+		otIp6SetReceiveFilterEnabled(ot_context->instance, true);
+		otIp6SetReceiveCallback(ot_context->instance,
+					ot_receive_handler, ot_context);
+		otSetStateChangedCallback(
+					ot_context->instance,
+					&ot_state_changed_handler,
+					ot_context);
+	}
 
 	ll_addr = net_if_get_link_addr(iface);
 
diff --git a/subsys/net/lib/openthread/platform/misc.c b/subsys/net/lib/openthread/platform/misc.c
index 8484c22c877..b940c999413 100644
--- a/subsys/net/lib/openthread/platform/misc.c
+++ b/subsys/net/lib/openthread/platform/misc.c
@@ -25,3 +25,8 @@ otPlatResetReason otPlatGetResetReason(otInstance *aInstance)
 
 	return OT_PLAT_RESET_REASON_POWER_ON;
 }
+
+void otPlatWakeHost(void)
+{
+	/* TODO */
+}
diff --git a/subsys/net/lib/openthread/platform/platform.c b/subsys/net/lib/openthread/platform/platform.c
index 0495604b193..d5df9741d7d 100644
--- a/subsys/net/lib/openthread/platform/platform.c
+++ b/subsys/net/lib/openthread/platform/platform.c
@@ -29,4 +29,8 @@ void otSysProcessDrivers(otInstance *aInstance)
 {
 	platformRadioProcess(aInstance);
 	platformAlarmProcess(aInstance);
+
+	if (IS_ENABLED(CONFIG_OPENTHREAD_NCP)) {
+		platformUartProcess(aInstance);
+	}
 }
diff --git a/subsys/net/lib/openthread/platform/radio.c b/subsys/net/lib/openthread/platform/radio.c
index b12e2f1ca1d..8e3ebf0be28 100644
--- a/subsys/net/lib/openthread/platform/radio.c
+++ b/subsys/net/lib/openthread/platform/radio.c
@@ -432,6 +432,24 @@ otError otPlatRadioEnergyScan(otInstance *aInstance, u8_t aScanChannel,
 	return OT_ERROR_NONE;
 }
 
+otError otPlatRadioGetCcaEnergyDetectThreshold(otInstance *aInstance,
+					       int8_t *aThreshold)
+{
+	OT_UNUSED_VARIABLE(aInstance);
+	OT_UNUSED_VARIABLE(aThreshold);
+
+	return OT_ERROR_NOT_IMPLEMENTED;
+}
+
+otError otPlatRadioSetCcaEnergyDetectThreshold(otInstance *aInstance,
+					       int8_t aThreshold)
+{
+	OT_UNUSED_VARIABLE(aInstance);
+	OT_UNUSED_VARIABLE(aThreshold);
+
+	return OT_ERROR_NOT_IMPLEMENTED;
+}
+
 void otPlatRadioEnableSrcMatch(otInstance *aInstance, bool aEnable)
 {
 	ARG_UNUSED(aInstance);