Thread (5 messages) 5 messages, 3 authors, 2007-05-02

Re: [PATCH 17/41] fbdev: Add drawing functions forframebuffers in system RAM

From: James Simmons <hidden>
Date: 2007-05-02 20:55:38

quoted
quoted
	Hi Tony,
quoted
The generic drawing functions (cfbimgblt, cfbcopyarea, 
cfbfillrect) assume
that the framebuffer is in IO memory.  However, we have 3 
drivers (hecubafb,
arcfb, and vfb) where the framebuffer is allocated from 
system RAM (via
vmalloc). Using _raw_read/write and family for these drivers 
(as used in
the cfb* functions) is illegal, especially in other platforms.
This is also true for ps3fb. I'll update the support for that once this
patch has hit mainline.
Bloat.
Only the source gets larger.  Only drivers that need it will compile it.
quoted
 It would be much easier to replace the FB_WRITEL and FB_READL 
macros.
Of course it's not as simple as replacing FB_WRITEL and FB_READL. Think
very carefully. 

Hint1: #define FB_MAX 32
Hint2: sparse
Yeap. fbwrite/fbread are not flexable enough. The is way I put hooks into
struct fb_pixmap for writing/reading the framebuffer.

-------------------------------------------------------------------------
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/
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help