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Original question:

AM62A7: The way to set register value in driver

AM62A7: imx219_set_ctrl is only called a few times instead of repeatedly

meng Ke
Intellectual 940 points
Part Number: AM62A7

Tool/software:

Hi Ti Experts,


I found gsttiovxisp.c and observed in the log that the gst_tiovx_isp_postprocess function is called repeatedly.

It sends messages to imx219.c by ioctl,

but imx219.c only receives these messages a few times when the camera is started.

Is there some limitation that prevents it from processing received messages after initialization?

Best Regards.

Meng

  • +1
    TI__Intellectual 980 points

    Hi menge,

    The gst_tiovx_isp_postprocess function in gsttiovxisp.c is part of the user-space ISP (Image Signal Processor) control loop, which continuously analyzes image statistics (like luminance) and determines the new exposure and gain settings. However, it only sends these updates to the kernel driver (imx219.c) when there is a significant change in the environment that requires an adjustment.