Daniel Mack <zonque@xxxxxxxxx> writes: > * camera driver: > I started the transition, but I'm not sure how much sense that > makes without access to the hardware. I'd much appreciate if > anyone could volunteer for this piece; I'll happily share what > I got so far. Sascha, Sachin, Guennadi? Hi Daniel, Do you mean this driver ? : drivers/media/platform/soc_camera/pxa_camera.c In that case I might help. But before I can do that, I have to be convinced that dmaengine can deal with this driver. I'm thinking in particular of : - "hot running DMA" queuing - multiple DMA channel synchronization (ie. 3 channel sync) All that is described in there : Documentation/video4linux/pxa_camera.txt If someone with dmaengine knowledge could have a look at pxa_camera.txt (maybe Vinod ?) and tell me that dma_engine framework fullfills the 2 requirements, then I'll be happy to help. One minor point though is that I'm working on pxa27x. If the serie is not compatible in a way with pxa27x, I won't be able to do anything. Another point I'd like to know, is what is the performance penalty in using dmaengine, and do you have any figures ? Lastly, they was debug information to debug descriptors chaining, channel statuses, requestors. I didn't see where these had gone, could you point me to the right file ? Cheers. -- Robert -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
