From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.visioncatalog.de ([217.6.246.34] helo=root.phytec.de) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UQFg5-0006Qq-Ry for barebox@lists.infradead.org; Thu, 11 Apr 2013 11:28:30 +0000 Received: from idefix.phytec.de (idefix.phytec.de [172.16.0.10]) by root.phytec.de (Postfix) with ESMTP id 8F576BF0E6 for ; Thu, 11 Apr 2013 13:27:29 +0200 (CEST) From: Jan Weitzel Date: Thu, 11 Apr 2013 13:28:19 +0200 Message-Id: <1365679699-4475-1-git-send-email-j.weitzel@phytec.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [RFC] omap4-fb: use uncached screen_base To: barebox@lists.infradead.org If the buffer is cached the image on the LCD is broken. Only some small lines on the last rows. Flushing the cache "repairs" the image. Is remap_range the right way to get a non cached buffer? This patch only covers prealloc_screen, not dynamic If the buffer is dynamic, is the use of dma_alloc_coherent right? Or should the buffer remaped again if freed? --- drivers/video/omap4.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/drivers/video/omap4.c b/drivers/video/omap4.c index 5642f25..1ade988 100644 --- a/drivers/video/omap4.c +++ b/drivers/video/omap4.c @@ -32,6 +32,8 @@ #include #include +#include + #include "omap4.h" struct omap4fb_device { @@ -489,6 +491,9 @@ static int omap4fb_probe(struct device_d *dev) fbi->prealloc_screen.addr = (void __iomem *)pdata->screen->start; fbi->prealloc_screen.size = resource_size(pdata->screen); + remap_range(fbi->prealloc_screen.addr, + fbi->prealloc_screen.size, + mmu_get_pte_uncached_flags()); } omap4fb_reset(fbi); -- 1.7.0.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox