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authorMartin Ambrose <martin@ti.com>2010-05-24 14:34:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-25 08:07:09 -0700
commit1f9c3e1f07e39c8af3bf42236fc553b5bb0f83f1 (patch)
treee7933cec5b2200f3fc0c55b47a7af5bfac558596 /include/video
parentfb6cb3270af8f2ad3dd556906a9c52aa85754849 (diff)
downloadop-kernel-dev-1f9c3e1f07e39c8af3bf42236fc553b5bb0f83f1.zip
op-kernel-dev-1f9c3e1f07e39c8af3bf42236fc553b5bb0f83f1.tar.gz
fbdev: da8xx/omap-l1xx: implement double buffering
This work includes the following: - Implement handler for FBIO_WAITFORVSYNC ioctl. - Allocate the data and palette buffers separately. A consequence of this is that the palette and data loading is now done in different phases. And that the LCD must be disabled temporarily after the palette is loaded but this will only happen once after init and each time the palette is changed. I think this is OK. - Allocate two (ping and pong) framebuffers from memory. - Add pan_display handler which toggles the LCDC DMA registers between the ping and pong buffers. Signed-off-by: Martin Ambrose <martin@ti.com> Cc: Chaithrika U S <chaithrika@ti.com> Cc: Sudhakar Rajashekhara <sudhakar.raj@ti.com> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/video')
-rw-r--r--include/video/da8xx-fb.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/video/da8xx-fb.h b/include/video/da8xx-fb.h
index 89d43b3..6316cda 100644
--- a/include/video/da8xx-fb.h
+++ b/include/video/da8xx-fb.h
@@ -99,6 +99,7 @@ struct lcd_sync_arg {
#define FBIPUT_COLOR _IOW('F', 6, int)
#define FBIPUT_HSYNC _IOW('F', 9, int)
#define FBIPUT_VSYNC _IOW('F', 10, int)
+#define FBIO_WAITFORVSYNC _IOW('F', 0x20, u_int32_t)
#endif /* ifndef DA8XX_FB_H */
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