[PATCH] media: ipu-bridge: Add upside-down sensor DMI quirk for Samsung Galaxy Book3 Ultra

[PATCH] media: ipu-bridge: Add upside-down sensor DMI quirk for Samsung Galaxy Book3 Ultra

[Felipe Calliari]

On the Samsung Galaxy Book3 Ultra (960XFH) the OV02C10 sensor is mounted
upside-down. The 180 degree rotation is not described in the sensor's
ACPI data: both the SSDB and the _PLD report a rotation of 0 degrees, so
ipu_bridge_parse_rotation() assigns a "rotation" property of 0 to the
sensor fwnode and the image is rendered upside-down in userspace.

Because the SSDB degree field holds the valid value 0, the flipped
mounting goes unnoticed: the driver logs no warning and userspace (e.g.
libcamera) has no way to correct the image.

Add a DMI quirk entry for this laptop so that the sensor fwnode gets a
"rotation" property of 180 and userspace (e.g. libcamera) can
compensate.

Tested on the Galaxy Book3 Ultra: with the sensor reporting
V4L2_CID_CAMERA_SENSOR_ROTATION = 180 (verified with an equivalent
local sensor-driver quirk), libcamera renders the image upright.

Signed-off-by: Felipe Calliari <calliarifelipe@gmail.com>
---
 drivers/media/pci/intel/ipu-bridge.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/media/pci/intel/ipu-bridge.c b/drivers/media/pci/intel/ipu-bridge.c
index 1bb3a3e98..165f3c612 100644
--- a/drivers/media/pci/intel/ipu-bridge.c
+++ b/drivers/media/pci/intel/ipu-bridge.c
@@ -192,6 +192,14 @@ static const struct dmi_system_id upside_down_sensor_dmi_ids[] = {
 		},
 		.driver_data = "OVTI02E1",
 	},
+	{
+		/* Samsung Galaxy Book3 Ultra */
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "960XFH"),
+		},
+		.driver_data = "OVTI02C1",
+	},
 	{} /* Terminating entry */
 };
 
-- 
2.55.0