On Tue, Mar 17, 2009 at 2:58 PM, Pete Eberlein <pete@xxxxxxxxxxxx> wrote: > On Tue, 2009-03-03 at 11:51 -0700, Paul Thomas wrote: >> Hello, is anyone using a USB v4l device on an arm processor? > > While I haven't used a USB video device on an ARM board, I have tried > cross compiling the v4l sources for ARM. Here's what I found: > > The v4l/Makefile.media uses the host strip binary on the ARM .ko files, > which doesn't work. It could use $(CROSS_COMPILE)strip instead. I > worked around the problem using a strip soft-link to arm-eabi-strip in > my cross tools bin directory. > > The v4l/firmware/Makefile assumes /lib/firmware, this could be > $(DESTDIR)/lib/firmware instead. > > Here are the make commands I used to build the v4l tree: > > PATH=/path/to/devkitARM/bin:$PATH make ARCH=arm CROSS_COMPILE=arm-eabi- > SRCDIR=/path/to/arm/kernel-src > > PATH=/path/to/devkitARM/bin:$PATH make ARCH=arm CROSS_COMPILE=arm-eabi- > DESTDIR=/path/to/arm/sysroot install > > I'd like to know if modules built this way work on actual hardware. > > Regards. > -- > Pete Eberlein > Sensoray Co., Inc. > Email: pete@xxxxxxxxxxxx > http://www.sensoray.com > > Pete, I've been able to get the v4l tree to compile fine. I use the "make release DIR=" to set the kernel DIR then make with the normal ARCH= and CROSS_COMPILE=, and this seems to work correctly. Since I posted we've had some limited success getting v4l devices working with arm. The main problem now seems to be that the processor we're using (at91rm9200) doesn't have a high-speed USB host. I've been talking with some of the folks at sensoray (Danil & Konstantin) about getting the 2251 or 2255 to work on our arm board. thanks, Paul -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
