[Bug 1234] investigate using DMA for pixmap migration

bugzilla-daemon at bugzilla.openmoko.org bugzilla-daemon at bugzilla.openmoko.org
Tue Mar 4 12:11:51 CET 2008


dodji at openedhand.com changed:

           What    |Removed                     |Added
 Attachment #532 is|0                           |1
           obsolete|                            |

------- Additional Comments From dodji at openedhand.com  2008-03-04 12:11 -------
Created an attachment (id=535)
 --> (http://bugzilla.openmoko.org/cgi-bin/bugzilla/attachment.cgi?id=535&action=view)
DMA+blitter queued to perform the pixmap copy

This patch lets the glamo-fb.c expose an ioctl to do pixmap copy from system
ram to video ram using DMA. The pixmap data is first DMAed to an offscreen
buffer in video ram then the 2D blitter is used to blit that at the actual
visible location on the screen. There is also an ioctl exposed to initialise
the glamo command processor.

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