Diffstat (limited to 'patches')
| -rw-r--r-- | patches/0001-libipa-camera_sensor-add-ov02c10.patch | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/patches/0001-libipa-camera_sensor-add-ov02c10.patch b/patches/0001-libipa-camera_sensor-add-ov02c10.patch new file mode 100644 index 0000000..c917c1d --- /dev/null +++ b/patches/0001-libipa-camera_sensor-add-ov02c10.patch @@ -0,0 +1,67 @@ +libipa: camera_sensor: Add support for the OV02C10 + +The OV02C10 is the front camera of the Microsoft Surface Pro 12in. Without +a CameraSensorHelper the software ISP cannot map the V4L2_CID_ANALOGUE_GAIN +control value onto a real gain, so its AGC has no usable gain model and just +ramps the control to its maximum. The preview stays close to black regardless +of the scene: + + WARN IPASoft soft_simple.cpp:104 IPASoft: Failed to create camera sensor helper for ov02c10 + WARN CameraSensorProperties camera_sensor_properties.cpp:548 No static properties available for 'ov02c10' + +The kernel driver programs the analogue gain into the 16 bit register pair at +0x3508 with a range of 0x10 to 0xf8, i.e. 4 fractional bits and 1x to 15.5x, +so the gain is simply code / 16. + +The black level was measured on a Surface Pro 12in from raw frames captured +off the CAMSS RDI video node: the 1st percentile of a dark frame sits at code +64 in 10 bits, matching the usual OmniVision 0x40. + +Pixel size and optical format (1.116 um, 1/7.25") are from the OMNIVISION +product page for the OV02C10. + +--- a/src/ipa/libipa/camera_sensor_helper.cpp ++++ b/src/ipa/libipa/camera_sensor_helper.cpp +@@ -677,6 +677,18 @@ + }; + REGISTER_CAMERA_SENSOR_HELPER("ov01a10", CameraSensorHelperOv01a10) + ++class CameraSensorHelperOv02c10 : public CameraSensorHelper ++{ ++public: ++ CameraSensorHelperOv02c10() ++ { ++ /* From dark frame measurement: 0x40 at 10bits. */ ++ blackLevel_ = 4096; ++ gain_ = AnalogueGainLinear{ 1, 0, 0, 16 }; ++ } ++}; ++REGISTER_CAMERA_SENSOR_HELPER("ov02c10", CameraSensorHelperOv02c10) ++ + class CameraSensorHelperOv08x40 : public CameraSensorHelper + { + public: +--- a/src/libcamera/sensor/camera_sensor_properties.cpp ++++ b/src/libcamera/sensor/camera_sensor_properties.cpp +@@ -335,6 +335,21 @@ + .hblankDelay = 3 + }, + } }, ++ { "ov02c10", { ++ .unitCellSize = { 1116, 1116 }, ++ .testPatternModes = { ++ { controls::draft::TestPatternModeOff, 0 }, ++ { controls::draft::TestPatternModeColorBars, 1 }, ++ /* ++ * No corresponding test patterns in ++ * MIPI CCS specification for sensor's ++ * 2: "Top-Bottom Darker Color Bar" ++ * 3: "Right-Left Darker Color Bar" ++ * 4: "Color Bar type 4" ++ */ ++ }, ++ .sensorDelays = { }, ++ } }, + { "ov2685", { + .unitCellSize = { 1750, 1750 }, + .testPatternModes = { |