In a project of mine on the Uni, I'm working with an AT91RM9200 (devboard like) and a Micron CMOS camera modult. This module is capable of 2Mpix with HW JPEG compression, streamed out on an 8-bit parralel databus, with 3 bits of control line.

The 9200's now running Debian, but I'm thinking hard to change it to wrt. This is where, the main part comes in. I've to develop the driver (and the SW) for the camera, but the easies way will be to use one line of IRQ. On the RM9200's the IRQ0 is free (other IRQ inputs used by other peripherial like LAN PHY), but I did not now, what will happen, if I connect to that port and ask the kernel to reserve the IRQ0 for me. Can anyone help me solve this matter?

BTW, how does OpenWRT handle IRQ's?