From 357dbc9f0e6d0e26f27553c2955cf580bc030394 Mon Sep 17 00:00:00 2001
From: Geoffrey Van Landeghem <geoffrey.vl@gmail.com>
Date: Sun, 24 Nov 2024 20:29:50 +0100
Subject: libcamera: libipa: camera_sensor_helper: add IMX290 black level

Report the default sensor black level reported by the datasheet.
Note that IMX327 and IMX462 depend on the IMX290 CameraSensorHelper.
That's fine since those sensors report the same defaults for the
black level as the Sony IMX290.

Signed-off-by: Geoffrey Van Landeghem <geoffrey.vl@gmail.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
---
 src/ipa/libipa/camera_sensor_helper.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src')

diff --git a/src/ipa/libipa/camera_sensor_helper.cpp b/src/ipa/libipa/camera_sensor_helper.cpp
index f870dc28..a0a5437a 100644
--- a/src/ipa/libipa/camera_sensor_helper.cpp
+++ b/src/ipa/libipa/camera_sensor_helper.cpp
@@ -576,6 +576,8 @@ class CameraSensorHelperImx290 : public CameraSensorHelper
 public:
 	CameraSensorHelperImx290()
 	{
+		/* From datasheet: 0xf0 at 12bits. */
+		blackLevel_ = 3840;
 		gainType_ = AnalogueGainExponential;
 		gainConstants_.exp = { 1.0, expGainDb(0.3) };
 	}
-- 
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