[PATCH v3 1/4] libcamera: rkisp1: Prepare for additional camera controls

[Umang Jain]

Currently the rkisp1 pipeline handler only registers controls that are
related to the IPA. This patch prepares the rkisp1 pipeline-handler to
register camera controls which might not related to the IPA.

Hence, introduce a additional ControlInfoMap for IPA controls. These
controls will be merged together with the controls in the pipeline
handler (introduced subsequently) as part of updateControls() and
together will be registered during the registeration of the camera.
This is similar to what IPU3 pipeline handler handles its controls.

Signed-off-by: Umang Jain <umang.jain at ideasonboard.com>
---
 src/libcamera/pipeline/rkisp1/rkisp1.cpp | 28 +++++++++++++++++++++---
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index 4cbf105d..bfc44239 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -109,6 +109,8 @@ public:
 
 	std::unique_ptr<ipa::rkisp1::IPAProxyRkISP1> ipa_;
 
+	ControlInfoMap ipaControls_;
+
 private:
 	void paramFilled(unsigned int frame);
 	void setSensorControls(unsigned int frame,
@@ -184,6 +186,8 @@ private:
 	int allocateBuffers(Camera *camera);
 	int freeBuffers(Camera *camera);
 
+	int updateControls(RkISP1CameraData *data);
+
 	MediaDevice *media_;
 	std::unique_ptr<V4L2Subdevice> isp_;
 	std::unique_ptr<V4L2VideoDevice> param_;
@@ -370,7 +374,7 @@ int RkISP1CameraData::loadIPA(unsigned int hwRevision)
 	}
 
 	ret = ipa_->init({ ipaTuningFile, sensor_->model() }, hwRevision,
-			 sensorInfo, sensor_->controls(), &controlInfo_);
+			 sensorInfo, sensor_->controls(), &ipaControls_);
 	if (ret < 0) {
 		LOG(RkISP1, Error) << "IPA initialization failure";
 		return ret;
@@ -820,12 +824,13 @@ int PipelineHandlerRkISP1::configure(Camera *camera, CameraConfiguration *c)
 
 	ipaConfig.sensorControls = data->sensor_->controls();
 
-	ret = data->ipa_->configure(ipaConfig, streamConfig, &data->controlInfo_);
+	ret = data->ipa_->configure(ipaConfig, streamConfig, &data->ipaControls_);
 	if (ret) {
 		LOG(RkISP1, Error) << "failed configuring IPA (" << ret << ")";
 		return ret;
 	}
-	return 0;
+
+	return updateControls(data);
 }
 
 int PipelineHandlerRkISP1::exportFrameBuffers([[maybe_unused]] Camera *camera, Stream *stream,
@@ -1101,8 +1106,23 @@ int PipelineHandlerRkISP1::initLinks(Camera *camera,
 	return 0;
 }
 
+int PipelineHandlerRkISP1::updateControls(RkISP1CameraData *data)
+{
+	ControlInfoMap::Map rkisp1Controls;
+
+	/* Add the IPA registered controls to list of camera controls. */
+	for (const auto &ipaControl : data->ipaControls_)
+		rkisp1Controls[ipaControl.first] = ipaControl.second;
+
+	data->controlInfo_ = ControlInfoMap(std::move(rkisp1Controls),
+					    controls::controls);
+
+	return 0;
+}
+
 int PipelineHandlerRkISP1::createCamera(MediaEntity *sensor)
 {
+	ControlInfoMap::Map rkisp1Controls;
 	int ret;
 
 	std::unique_ptr<RkISP1CameraData> data =
@@ -1137,6 +1157,8 @@ int PipelineHandlerRkISP1::createCamera(MediaEntity *sensor)
 	if (ret)
 		return ret;
 
+	updateControls(data.get());
+
 	std::set<Stream *> streams{
 		&data->mainPathStream_,
 		&data->selfPathStream_,
-- 
2.44.0