PXA270 framebuffer
flat view
From: Julien Lebot <hidden>
Date: 2007-06-07 11:22:38
Hi, I'm currently developping on the Gumstix verdex platform and I noticed that the PXA270 processor includes a support for smartpanel screen in its framebuffer. I've already written a small "driver" which is just a prototype to test if the LCD panel was working but it's far from being something really useful. (display only a picture, call some hardware functions of the LCD (rotate ...) and exit) Also it's not using the PXA270 framebuffer at all, the communication protocol is handled in software which is pretty slow (about 1sec to display the picture). Since the PXA270 uses the pxafb driver I wonder is there is any plan to add the support for smart panels. I thought about modifying the driver so that parameters can be passed at boot time specifying if it is a smart-panel or a "regular" LCD along with other video parameters. In the driver I understand that it is needed to set up the framebuffer registers, then enabling the framebuffer and passing the data/command through the DMA channel 6 using some kind of scheduling function. Well so far all my attempts did not lead to something viable :D I've also tried to write a framebuffer driver from vfb and fbskeleton for this kind of screen but I'm a real newbie at kernel programming, thus leading to nothing at the moment. I've posted on the linux-kernel mailing list and got some useful answers about kernel programming and the framebuffer itself, though I think this mailing list is more appropriate. Any idea / help would be really appreciated, Julien. _________________________________________________________________ MSN Messenger: appels gratuits de PC à PC ! http://www.msn.fr/newhotmail/Default.asp?Ath=f ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/