[PATCH v3 1/2] libcamera: libipa: camera_sensor: Add MediaTek gc05a2 sensor properties

[Harvey Yang]

From: Harvey Yang <chenghaoyang at google.com>

Provide the MediaTek gc05a2 camera sensor properties and registration
with libipa for the gain code helpers.

Signed-off-by: Han-Lin Chen <hanlinchen at chromium.org>
Co-developed-by: Xing Gu <xinggu at chromium.org>
Co-developed-by: Yudhistira Erlandinata <yerlandinata at chromium.org>
Co-developed-by: Harvey Yang <chenghaoyang at chromium.org>
---
 src/ipa/libipa/camera_sensor_helper.cpp           | 11 +++++++++++
 src/libcamera/sensor/camera_sensor_properties.cpp |  7 +++++++
 2 files changed, 18 insertions(+)

diff --git a/src/ipa/libipa/camera_sensor_helper.cpp b/src/ipa/libipa/camera_sensor_helper.cpp
index c6169bdc7..36555680b 100644
--- a/src/ipa/libipa/camera_sensor_helper.cpp
+++ b/src/ipa/libipa/camera_sensor_helper.cpp
@@ -519,6 +519,17 @@ private:
 };
 REGISTER_CAMERA_SENSOR_HELPER("ar0521", CameraSensorHelperAr0521)
 
+class CameraSensorHelperGc05a2 : public CameraSensorHelper
+{
+public:
+	CameraSensorHelperGc05a2()
+	{
+		gainType_ = AnalogueGainLinear;
+		gainConstants_.linear = { 100, 0, 0, 1024 };
+	}
+};
+REGISTER_CAMERA_SENSOR_HELPER("gc05a2", CameraSensorHelperGc05a2)
+
 class CameraSensorHelperImx214 : public CameraSensorHelper
 {
 public:
diff --git a/src/libcamera/sensor/camera_sensor_properties.cpp b/src/libcamera/sensor/camera_sensor_properties.cpp
index 6d4136d03..2f048d4a3 100644
--- a/src/libcamera/sensor/camera_sensor_properties.cpp
+++ b/src/libcamera/sensor/camera_sensor_properties.cpp
@@ -70,6 +70,13 @@ const CameraSensorProperties *CameraSensorProperties::get(const std::string &sen
 				{ controls::draft::TestPatternModeColorBarsFadeToGray, 3 },
 			},
 		} },
+		{ "gc05a2", {
+			.unitCellSize = { 1120, 1120 },
+			.testPatternModes = {
+				{ controls::draft::TestPatternModeOff, 0 },
+				{ controls::draft::TestPatternModeColorBars, 1 },
+			},
+		} },
 		{ "hi846", {
 			.unitCellSize = { 1120, 1120 },
 			.testPatternModes = {
-- 
2.47.0.338.g60cca15819-goog