Hi Alex (added linux-media to CC on your request) On Wed, 3 Oct 2012, Alex Pollard wrote: > Hi, > > I am wondering if it is possible to use the DMA features in > drivers/dma/ipu/ipu_idmac.c to write the top field of a PAL frame into a > framebuffer on alternating lines, and write the bottom field of the PAL > frame to the other lines ie deinterlace. Looking at the i.MX31 CSI documentation it seems it could be possible to use CSI_SENS_FRM_SIZE and CSI_ACT_FRM_SIZE to specify stride != width to basically do stride = 2 * width and then do 2 transfers per frame - one beginning with line 0 and one beginning with line 1? But that's just an idea, the description of those registers is vague and I'm also not sure how to implement that. Good luck Guennadi > Do you know a good discussion > list where I could post the question? I am using an i.MX53 but the > support "community" is a bit quiet. > > Thanks > > Alex Pollard > Software Engineer > --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer http://www.open-technology.de/ -- 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
