Hi all, While working on an old port of the omap3 camera-isp driver, I have faced some problem.
Basically, when calling VIDIOC_REQBUFS with a certain buffer Count, we had a software limit for total size, calculated depending on: Total bytesize = bytesperline x height x count So, we had an arbitrary limit to, say 32 MB, which was generic. Now, we want to condition it ONLY when MMAP buffers will be used. Meaning, we don't want to keep that policy when the kernel is not allocating the space But the thing is that, according to videobuf documentation, buf_setup is the one who should put a RAM usage limit. BUT the memory type passed to reqbufs is not propagated to buf_setup, therefore forcing me to go to a non-standard memory limitation in my reqbufs callback function, instead of doing it properly inside buf_setup. Is this scenario a good consideration to change buf_setup API, and propagate buffers memory type aswell? I'll appreciate your inputs on this matter. Regards, Sergio -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
