<div class="gmail_quote">On Mon, Dec 13, 2010 at 11:18 PM, Arnd Bergmann <<a href="mailto:arnd@arndb.de">arnd@arndb.de</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> <div class="im">On Monday 13 December 2010, Jammy Zhou wrote: > On Mon, Dec 13, 2010 at 4:45 AM, Linus Walleij <<a href="mailto:linus.walleij@linaro.org">linus.walleij@linaro.org</a>>wrote: > > > On 11 December 2010 22:41, Arnd Bergmann <<a href="mailto:arnd@arndb.de">arnd@arndb.de</a>> wrote: > > > > * amd-gpu -- a single but huge driver for the GPU. As is normally the > >> case with GPU drivers, we can expect long discussions > >> before it will get considered for mainline > >> 4 patches > >> 98 files changed, 278321 insertions(+), 0 deletions(-) > >> > > > > Just out of curiosity, following the discussion between Dave Airlie > > and Codeaurora this summer re GPU driver shims. > > > > Is the AMD GPU exposing all functionality in its kernel driver or > > is there some userspace blob somewhere with lots of e.g. GL > > goodies? > > > All the functionality for the kernel driver of AMD GPU Z430/Z160 (now > belongs to Qualcom) is exposed. But we need accompanied userspace library to > call these functionality (buffer management, command submission, ...). </div>Who owns these components? If it's closed source, the only options we have are lobbying for complete release of the specs for a reimplementation or reverse-engineering the drivers, which may at least get easier with a user space driver than it would be with a kernel driver. </blockquote><div> The user space library is closed source, and it is owned by Qualcomm. </div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Until there is a solution with an open source user space part, I would suggest that the driver better be dropped from the Freescale BSP and we should at least not waste time reviewing it. </blockquote><div> I think it is beneficial for us to integrate the kernel part into our Linaro tree, so that we can build/use it together with the kernel image. As for the user space libraries, how about adding them into the hwpack? (Is there any legal issue for this?) </div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Arnd </blockquote></div>