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ISP interface

Emilie Trevisiol
Prodigy 10 points
Other Parts Discussed in Thread: OMAP3530, TVP5146

Hi,

I need some help with the ISP interface. I have a Gumstix platfom with OMAP3530. The kernel is 2.6.30.

I want to add the ISP interface on it in order to capture video from a camera sensor (PAL).

For that, I had a video decoder which is saa7113 (output frame are in bt656 on 8bits). There is the module in the kernel 2.6.

The problem is that the Overo Linux kernel is not setup for use with Image Sensors, or Digitizers on the ISP port. So, I made some patches from http://www.gitorious.org/omap3camera/pages/Home. I have now a isp-mod.ko and the isp files in drivers/media/video/isp.

But I don't know what I have to do now. How can I configure the isp interface in order to capture video? Is it in userspace or kernelspace?

Thank you.


Emilie

  • 0
    TI__Mastermind 41665 points

    Emilie Trevisiol said:
    How can I configure the isp interface in order to capture video? Is it in userspace or kernelspace?

    This is something that would typically be done in kernel space, i.e. you modify the isp capture drivers to support your particular video input hardware (i.e. SAA7113).

    I have not done much work with Gumstix, however I can say that the OMAP3 EVM board from Mistral has video capture capability using a TVP5146 in place of your SAA7113 (both use bt.656), so you might find the driver source used there (in the PSP of the DVSDK) of some help, but it would still require some kernel driver modification work to support configuring the SAA7113.

  • 0 in reply to Bernie Thompson TI
    Prodigy 205 points

    We have designed a customized board based on OMAP3 EVM. For temperature reason, we choose SAA7113 instead of TVP514x. The Linux version is 2.6.32.

    However, the saa7113 driver seems not compatible with omap34xxcam driver. omap34xxcam is implemented based on V4L2-int framework, which is deprecated. saa7113 is based on V4L2 sub-devices framework.

    If my diagnosis is correct, is there a newer version of omap34xxcam driver which is based on V4L2 sub-devices framework? or an old version of saa7113 driver which is based on V4L2-int framework?

     

  • 0 in reply to Hsueh-szu Yang
    TI__Expert 8785 points

    Can you repost this question in the OMAP3 forum?  They will be able to help you better.

    --Christina