I'm trying to get a Techwell TW6869 driver to work. This PCIe-chip is able to capture analog video signals. Therefore I'm using a driver which can be found here: GitHub
The chip is connected to a Freescale imx.6 processor which is running Angström distribution. The driver already worked on the target but I didn't use it for some time and somehow it doesn't do it's job anymore.
So what I did, was implementing kernel messages in the beginning of each function so I know what does happen exactly. Finally I found out, that no PCIe Interrupt is generated anymore. Though the interrupt is registered which I found out here:
root@freescaleimx6:~# cat /proc/interrupts | grep tw6869
155: 0 0 0 0 GIC tw6869
Running something on the videodevice unfortunately does not generate an interrupt.
root@freescaleimx6:~# gst-launch-1.0 v4l2src device=/dev/video2 ! imxipuvideosink
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
^Chandling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 0:00:08.992961001
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...
root@freescaleimx6:~#
This could also possibly help (does it?)
root@freescaleimx6:~# cat /proc/bus/pci/devices
0000 16c3abcd 180 1000000 0 0 0 0 0 1200000 100000 0 0 0 0 0 10000 pcieport
0100 17976869 9b 1100008 0 0 0 0 0 0 1000 0 0 0 0 0 0 tw6869
Does anyone have an idea?