From ca444158723f3b92531dc552c154fed108f8bc15 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Thu, 30 Aug 2012 16:53:29 +0300 Subject: [PATCH] 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 --- drivers/video/omap2/omapfb/omapfb-main.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) 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 @@ static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev) 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 @@ int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type) goto err; } + omapfb_clear_fb(fbi); + return 0; err: omapfb_free_fbmem(fbi); @@ -1972,6 +1988,16 @@ static int omapfb_create_framebuffers(struct omapfb2_device *fbdev) } } + 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]); -- 2.7.4