Generated on 2019-Mar-29 from project linux revision v5.1-rc2 Powered by Code Browser 2.1 Generator usage only permitted with license.The communication with camera sensor is done through the i2c bus.
Camera sensor X driver (Kernel space) This V4L2 Linux device driver handles the camera sensor X external peripheral, handles some GPIOs lines and potentially power supplies to power-up/down the camera sensor.
It would be nice if the following explanation by Hans (archive msg69922) or maybe some more elaborate version could somehow make its way to It currently supports binning and cropping, and the gain, auto gain, exposure, auto exposure and test pattern controls.
I search from the Internet and v4l(V4L2_MEMORY_USERPTR) buffers (planes) are allocated by the application itself, and can reside for example in virtual or shared memory. For some special reason, we must move image data from the driver to user.