3 files changed, 14 insertions, 15 deletions
diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp
index 00da2bb2..2ea13ec9 100644
--- a/src/libcamera/pipeline/ipu3/ipu3.cpp
+++ b/src/libcamera/pipeline/ipu3/ipu3.cpp
@@ -1058,14 +1058,14 @@ int PipelineHandlerIPU3::registerCameras()
 		 * a sensor database. For now use generic values taken from
 		 * the Raspberry Pi and listed as 'generic values'.
 		 */
-		std::unordered_map<uint32_t, unsigned int> delays = {
-			{ V4L2_CID_ANALOGUE_GAIN, 1 },
-			{ V4L2_CID_EXPOSURE, 2 },
+		std::unordered_map<uint32_t, DelayedControls::ControlParams> params = {
+			{ V4L2_CID_ANALOGUE_GAIN, { 1, false } },
+			{ V4L2_CID_EXPOSURE, { 2, false } },
 		};
 
 		data->delayedCtrls_ =
 			std::make_unique<DelayedControls>(cio2->sensor()->device(),
-							  delays);
+							  params);
 		data->cio2_.frameStart().connect(data->delayedCtrls_.get(),
 						 &DelayedControls::applyControls);
 
diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
index 0f01ce8f..41f1cbff 100644
--- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
+++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
@@ -1260,16 +1260,15 @@ int RPiCameraData::configureIPA(const CameraConfiguration *config)
 	if (result.params & ipa::RPi::ConfigSensorParams) {
 		/*
 		 * Setup our delayed control writer with the sensor default
-		 * gain and exposure delays.
+		 * gain and exposure delays. Mark VBLANK for priority write.
 		 */
-		std::unordered_map<uint32_t, unsigned int> delays = {
-			{ V4L2_CID_ANALOGUE_GAIN, result.sensorConfig.gainDelay },
-			{ V4L2_CID_EXPOSURE, result.sensorConfig.exposureDelay },
-			{ V4L2_CID_VBLANK, result.sensorConfig.vblankDelay }
+		std::unordered_map<uint32_t, DelayedControls::ControlParams> params = {
+			{ V4L2_CID_ANALOGUE_GAIN, { result.sensorConfig.gainDelay, false } },
+			{ V4L2_CID_EXPOSURE, { result.sensorConfig.exposureDelay, false } },
+			{ V4L2_CID_VBLANK, { result.sensorConfig.vblankDelay, true } }
 		};
 
-		delayedCtrls_ = std::make_unique<DelayedControls>(unicam_[Unicam::Image].dev(), delays);
-
+		delayedCtrls_ = std::make_unique<DelayedControls>(unicam_[Unicam::Image].dev(), params);
 		sensorMetadata_ = result.sensorConfig.sensorMetadata;
 	}
 
diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index 4376d720..03757327 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -945,14 +945,14 @@ int PipelineHandlerRkISP1::createCamera(MediaEntity *sensor)
 	 * a sensor database. For now use generic values taken from
 	 * the Raspberry Pi and listed as generic values.
 	 */
-	std::unordered_map<uint32_t, unsigned int> delays = {
-		{ V4L2_CID_ANALOGUE_GAIN, 1 },
-		{ V4L2_CID_EXPOSURE, 2 },
+	std::unordered_map<uint32_t, DelayedControls::ControlParams> params = {
+		{ V4L2_CID_ANALOGUE_GAIN, { 1, false } },
+		{ V4L2_CID_EXPOSURE, { 2, false } },
 	};
 
 	data->delayedCtrls_ =
 		std::make_unique<DelayedControls>(data->sensor_->device(),
-						  delays);
+						  params);
 	isp_->frameStart.connect(data->delayedCtrls_.get(),
 				 &DelayedControls::applyControls);