OMAPFB: clear framebuffers with CPU
Currently vram.c clears the allocated memory automatically using OMAP
system DMA. In an effort to reduce OMAP dependencies, we'll do the
memory clear with CPU from now on.
This patch implements clearing of the framebuffer in omapfb, using
cfb_fillrect() to do the actual clear.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c
index fc671d3..7afdfcf 100644
--- a/drivers/video/omap2/omapfb/omapfb-main.c
+++ b/drivers/video/omap2/omapfb/omapfb-main.c
@@ -1592,6 +1592,20 @@
return 0;
}
+static void omapfb_clear_fb(struct fb_info *fbi)
+{
+ const struct fb_fillrect rect = {
+ .dx = 0,
+ .dy = 0,
+ .width = fbi->var.xres_virtual,
+ .height = fbi->var.yres_virtual,
+ .color = 0,
+ .rop = ROP_COPY,
+ };
+
+ cfb_fillrect(fbi, &rect);
+}
+
int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
@@ -1661,6 +1675,8 @@
goto err;
}
+ omapfb_clear_fb(fbi);
+
return 0;
err:
omapfb_free_fbmem(fbi);
@@ -1972,6 +1988,16 @@
}
}
+ for (i = 0; i < fbdev->num_fbs; i++) {
+ struct fb_info *fbi = fbdev->fbs[i];
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+
+ if (ofbi->region->size == 0)
+ continue;
+
+ omapfb_clear_fb(fbi);
+ }
+
/* Enable fb0 */
if (fbdev->num_fbs > 0) {
struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);