[libcamera-devel] [PATCH v2] libipa: Add CameraSensorHelper for OV13858

[Jean-Michel Hautbois]

Extend the CameraSensorHelper factory with support for an
OV13858 sensor as found in the Soraka Chromebook.

The datasheet states that low 7 bits are fraction bits, so the gain is
calculated as gainCode=128*gain.
According to the formula, it means m0=1 and c1=128.
m1 then has to be 0, and c0=0.

Signed-off-by: Kieran Bingham <kieran.bingham at ideasonboard.com>
Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois at ideasonboard.com>
---
 src/ipa/libipa/camera_sensor_helper.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/ipa/libipa/camera_sensor_helper.cpp b/src/ipa/libipa/camera_sensor_helper.cpp
index 84d8ccf7..17e4f0b2 100644
--- a/src/ipa/libipa/camera_sensor_helper.cpp
+++ b/src/ipa/libipa/camera_sensor_helper.cpp
@@ -315,6 +315,16 @@ public:
 };
 REGISTER_CAMERA_SENSOR_HELPER("ov5693", CameraSensorHelperOv5693)
 
+class CameraSensorHelperOv13858 : public CameraSensorHelper
+{
+public:
+	CameraSensorHelperOv13858()
+	{
+		analogueGainConstants_ = { AnalogueGainLinear, 1, 0, 0, 128 };
+	}
+};
+REGISTER_CAMERA_SENSOR_HELPER("ov13858", CameraSensorHelperOv13858)
+
 #endif /* __DOXYGEN__ */
 
 } /* namespace ipa */
-- 
2.30.2