For what it is worth, I was able to get a MT9V032 camera (caspa) working with an OMAP3 using the suggested linux-media branch with these two patches [1,2]. Thanks for the help :)
--Ash [1] http://gumstix-misc.s3.amazonaws.com/patches/0001-First-cut-at-caspa-support-with-devicetree.patch [2] http://gumstix-misc.s3.amazonaws.com/patches/0002-Pulling-in.patch On Tue, Jan 6, 2015 at 6:41 PM, Ash Charles <[email protected]> wrote: > Thanks for the hints. > > I tried the suggested branch adding omap3isp data to the Overo device > tree and device tree bindings for the mt9v032 device. I needed to > manually modprobe omap3-isp but the camera was registered and I was > able to use media-ctl to manipulate the v4l2 pipeline. I wasn't able > to stream as v4l2 was reporting "inappropriate ioctl"----old driver > perhaps? > > I also tried changing the #define HIST_CONFIG_DMA 0 such that the > histogram block uses PIO instead of using the deprecated > omap_request_dma. I saw basically the same behaviour. What would be > the correct/modern way to use DMA here? > > --Ash > > On Tue, Jan 6, 2015 at 2:11 PM, Sakari Ailus <[email protected]> wrote: >> (Fixed Laurent's e-mail.) >> >> Moikka, >> >> On Tue, Jan 06, 2015 at 01:42:18PM -0800, Tony Lindgren wrote: >>> * Ash Charles <[email protected]> [150106 12:45]: >>> > Hi, >>> > >>> > I'm playing with the Caspa camera (mt9v032) and Overo on the 3.17 >>> > kernel. It looks like there has been some work on dt-bindings for the >>> > omap3isp (notably [1] and [2]) but I didn't see anything heading for >>> > mainline. >>> > >>> > What would be needed to support cameras using the omap3isp in a mainline >>> > kernel? >>> >>> No idea about the camera, but at least the legacy omap DMA calls need >>> to be replaced or removed as the legacy DMA API will go away soon. >> >> OMAP DMA is only used by the histogram block which can cope with PIO as well >> --- I think there at least was a #define for it. That's not a reason not to >> convert it however, it's just not as urgent it otherwise might be. I wonder >> if someone has patches for that already. >> >> Cc Laurent. >> >> -- >> Terveisin, >> >> Sakari Ailus >> e-mail: [email protected] XMPP: [email protected] -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
