Hi Christian,
Yes dma-buf is part of the picture, but rather if any work has been done to define an interface for the device itself, not the buffers.
I do know that these are mostly managed from user-space for performance reasons, however I was curious to see if anything has been in the works for kernel-space (kind of drm but for much more tailored for 2D blitters).
-Ilyes
On Tue, May 15, 2012 at 3:14 PM, Christian Robottom Reis kiko@linaro.org wrote:
On Mon, May 14, 2012 at 10:18:17PM +0100, Ilyes Gouta wrote:
I've previously read (probably on Phoronix) that Linaro is working out a 'standard' kernel interface for 2D blitters IPs as commonly found on SoCs.
Has it ever been the case? If yes, are there any documentation/references online?
I wonder if you are talking about dma-buf and the other collection of work around Unified Memory Management:
https://wiki.linaro.org/OfficeofCTO/MemoryManagement
It's not really specific for 2D blitter IPs, but it does define how memory can be allocated and shared between different devices, particularly between the CPU, display controller and GPU IP. -- Christian Robottom Reis, Engineering VP Brazil (GMT-3) | [+55] 16 9112 6430 | [+1] 612 216 4935 Linaro.org: Open Source Software for ARM SoCs