Re: dma buffers for camera

2011-08-25 Thread Jan Pohanka
Hi Guennadi, The mx2_camera driver is allocating one discard buffer of the same size, as regular buffers for cases, when the user is not fast enough to queue new buffers for the running capture. Arguably, this could be aliminated and the last submitted buffer could be re-used until either

dma buffers for camera

2011-08-24 Thread Jan Pohanka
Hello, could please anyone explain me a bit situation about using memory buffers for dma for video input devices? Unfortunately I don't understand it at all. I want to capture images 1600x1200 from 2 mpix sensor on i.mx27 board. I gave 8MB to mx2_camera device with

Re: dma buffers for camera

2011-08-24 Thread Guennadi Liakhovetski
Hi Jan On Wed, 24 Aug 2011, Jan Pohanka wrote: Hello, could please anyone explain me a bit situation about using memory buffers for dma for video input devices? Unfortunately I don't understand it at all. I want to capture images 1600x1200 from 2 mpix sensor on i.mx27 board. I gave 8MB to