Android Kernel Drivers for Camera Device

android camera kernel drivers decoder
haseeb zahid picture haseeb zahid · Aug 20, 2013 · Viewed 18.4k times · Source

I have a problem interfacing a video decoder(tvp5150) as a camera to a android samsung dev-kit works on FIMC API.

As far as I goggled the decoders do work as camera interface for composite cameras. I added the drivers in the kernel from menuconfig , updated the board file, but when I launch the DEFAULT CAMERA application the drivers are never initialized however the device was probed successfully. All I can see is black screen and no vsync/hsync on chip.

My questions are

  • do I need to use a custom application in user-space that opens the new camera device.
  • do I need to add driver information in framework or other layers as well like kernel layer
  • do I need to add configuration in ioctl functions too.
  • what is mem2mem_test_dev.c in /kernel/drivers/media/video/ for. virtual camera test pattern? if yes how can I use it in android?
  • what did I missed here i am new to kernel and clueless what else to do after adding kernel drivers

I need some help and some detailed examples if possible.

Answer

msh picture msh · Aug 20, 2013

You need to write/port camera HAL (libcamera) - see TI porting guide http://processors.wiki.ti.com/index.php/TI-Android-DevKit-Camera_Porting_Guide

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