Hello Hal, I am working on the same problem and thanks to Laurent and others I made lots of progress here. I want to point you to http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg23076.html and http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg23315.html Have fun, Bastian 2010/10/20 Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>: > Hi Hal, > > On Tuesday 19 October 2010 23:58:48 Hal Moroff wrote: >> I'm pretty new to Linux video drivers (I do have experience with drivers in >> general) and am trying to get my head around the driver models. Sorry if >> this is too basic a question for this forum. >> >> I have an OMAP 3530 running Arago Linux (2.6.32 at the moment), > > You should really upgrade to a more recent OMAP3 ISP driver. The driver has > been (nearly) completely rewritten and has a new userspace API (still V4L2 > compatible of course). If you build your userspace applications for the OMAP3 > ISP driver shipped with the 2.6.32 kernel you will be stuck with the old buggy > driver. > > You can find the latest driver in > http://git.linuxtv.org/pinchartl/media.git?a=shortlog;h=refs/heads/media-0004- > omap3isp > >> and I'm trying to capture images from an Aptina sensor for which there does >> not seem to be a driver. >> >> There seem to be soc_camera, soc_camera-int, v4l2, omap34xxcam drivers at >> the very least. I'm pretty confused over these and how they do or don't work >> with V4L2 and/or each other. > > And you're missing isp-mod.ko :-) > >> It seems that some of the driver models are deprecated (but still in >> use), and that soc_camera is current. Or is it? > > In recent driver versions isp-mod.ko and omap34xxcam.ko have been merged into > omap3-isp.ko. The driver doesn't use the SoC camera framework, so you can > forget about soc_camera for now. > >> 2 things in particular at the moment are giving me a hard time: >> 1. I can't seem to load soc_camera.ko ... I keep getting the error: >> soc_camera: exports duplicate symbol soc_camera_host_unregister >> (owned by kernel) >> I can't seem to resolve this, nor can I find the issue described >> in any online forum (and so I suspect it's my problem). > > That's probably caused by soc_camera being built in your kernel image, and > then built again as a module. That shouldn't matter as you don't need > soc_camera anyway. > >> 2. There are drivers for the Aptina MT9V022 and the MT9M001 (among >> others). Both of these are sensors, and not SOC, and yet both of these >> rely on the soc_camera module. I'm willing to create the driver for my >> Aptina sensor, and the easiest way is generally to look at a known >> driver as a template, however I can't figure out which to look at. > > To be compatible with the OMAP3 ISP driver, sensor drivers need to implement > the V4L2 subdev pad-level API. Look at the MT9T001 driver in > http://git.linuxtv.org/pinchartl/media.git?a=shortlog;h=refs/heads/media- > mt9t001 for sample code. > > Please read the http://www.spinics.net/lists/linux-media/msg23744.html mail > thread for more information. > > -- > Regards, > > Laurent Pinchart > -- > 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 > -- 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
