This patch officially enables front camera support for the Dell Latitude 7320 detachable laptop.

Surprisingly, the front camera of the Dell Latitude 7320 2-in-1 laptop has never worked properly under Linux for 5 years. Now the answer has been revealed, and the culprit is actually the mistaken sensor model.

During the inspection, Sahan Nisanka found that although the front camera is labeled as OV5678, the actual chip is OV5675, which already has a ready-made Linux driver.

The model registered in the system firmware is actually OVTI5678, and this ID has not been claimed by any driver, which caused the camera to be abandoned for 5 years.

It is gratifying that this batch of patches has been submitted to the Linux kernel mailing list and is awaiting review and integration by the maintainer. If everything goes smoothly, users can upgrade the kernel and use the camera without having to tinker with third-party drivers.

However, there is one regret about the picture quality. This sensor is not a regular Bayer sensor, but comes with a 4x4 RGB-IR color filter array, with 1 out of every 4 pixels being infrared. Due to the lack of corresponding formats for the current interface, the color of the image cannot be fully restored.

In addition to the front camera, the support for the rear camera of the machine is not yet in place, and the related pin allocation is still being sorted out.