[PATCH 1/2] video: add driver for PXA3xx 2D graphics accelerator

[Eric Miao]

On Fri, Nov 5, 2010 at 2:44 AM, Daniel Mack <zonque at gmail.com> wrote:
> From: Daniel Mack <daniel at caiaq.de>
>
> This adds a driver for the the 2D graphics accelerator found on PXA3xx
> processors. Only resource mapping, interrupt handling and a simple ioctl
> handler is done by the kernel part, the rest of the logic is implemented
> in DirectFB userspace.
>
> Graphic applications greatly benefit for line drawing, blend, and
> rectangle and triangle filling operations.
>
> Benchmarks done on a PXA303 using the df_dok benchmarking tool follow,
> where the value in square brackets show the CPU usage during that test.
>
> Without accelerator (benchmarking 256x252 on 480x262 RGB16 (16bit)):
>
>  Anti-aliased Text                              3.016 secs (   65.649 KChars/sec) [ 99.6%]
>  Fill Rectangle                                 3.021 secs (  175.107 MPixel/sec) [ 98.0%]
>  Fill Rectangle (blend)                         3.582 secs (    3.602 MPixel/sec) [ 99.7%]
>  Fill Rectangles [10]                           3.177 secs (  182.753 MPixel/sec) [ 98.1%]
>  Fill Rectangles [10] (blend)                  18.020 secs (    3.580 MPixel/sec) [ 98.7%]
>  Fill Spans                                     3.019 secs (  145.306 MPixel/sec) [ 98.0%]
>  Fill Spans (blend)                             3.616 secs (    3.568 MPixel/sec) [ 99.4%]
>  Blit                                           3.074 secs (   39.874 MPixel/sec) [ 98.0%]
>  Blit 180                                       3.020 secs (   32.042 MPixel/sec) [ 98.0%]
>  Blit with format conversion                    3.005 secs (   19.321 MPixel/sec) [ 99.6%]
>  Blit from 32bit (blend)                        4.792 secs (    2.692 MPixel/sec) [ 98.7%]
>
> With accelerator:
>
>  Anti-aliased Text                              3.056 secs (*  36.518 KChars/sec) [ 21.3%]
>  Fill Rectangle                                 3.015 secs (* 115.543 MPixel/sec) [  8.9%]
>  Fill Rectangle (blend)                         3.180 secs (*  20.286 MPixel/sec) [  1.8%]
>  Fill Rectangles [10]                           3.251 secs (* 119.062 MPixel/sec) [  1.2%]
>  Fill Rectangles [10] (blend)                   6.293 secs (*  20.502 MPixel/sec) [  0.3%]
>  Fill Spans                                     3.051 secs (*  97.264 MPixel/sec) [ 35.7%]
>  Fill Spans (blend)                             3.377 secs (*  15.282 MPixel/sec) [ 17.8%]
>  Blit                                           3.046 secs (*  27.533 MPixel/sec) [  2.6%]
>  Blit 180                                       3.098 secs (*  27.070 MPixel/sec) [  2.2%]
>  Blit with format conversion                    3.131 secs (*  39.148 MPixel/sec) [  2.8%]
>  Blit from 32bit (blend)                        3.346 secs (*  11.568 MPixel/sec) [  0.8%]
>
> Signed-off-by: Daniel Mack <daniel at caiaq.de>
> Tested-by: Sven Neumann <s.neumann at raumfeld.com>

This has been around for too much time, and thanks Daniel and Sven for
the great work. It looks good to me and it's time to get this in.

Applied.