File 0021-video-omap2-skipping-clearing-of-framebuffer.patch of Package kernel-adaptation-dm3730

From bed3b10cd9be79fbebe2411c99cdc72ef3fa7e29 Mon Sep 17 00:00:00 2001
From: MediStream-Devel-VM <info@berlinux-solutions.de>
Date: Thu, 22 Nov 2012 17:15:30 +0100
Subject: [PATCH 4/5] video/omap2: -skipping clearing of framebuffer

---
 drivers/video/omap2/displays/Kconfig            |    2 +-
 drivers/video/omap2/displays/panel-medistream.c |    2 +-
 drivers/video/omap2/dss/dispc.c                 |    3 +++
 drivers/video/omap2/vram.c                      |    7 ++++++-
 4 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig
index 8a4cd82..4646325 100644
--- a/drivers/video/omap2/displays/Kconfig
+++ b/drivers/video/omap2/displays/Kconfig
@@ -75,7 +75,7 @@ config PANEL_N8X0
 
 config PANEL_MEDISTREAM
 	tristate "Bewatec MediStream Panel"
-	depends on OMAP2_DSS_DSI
+	depends on OMAP2_DSS_DPI
 	help
 	  Bewatec MediStream Panel
 
diff --git a/drivers/video/omap2/displays/panel-medistream.c b/drivers/video/omap2/displays/panel-medistream.c
index a75dcdd..3e07090 100644
--- a/drivers/video/omap2/displays/panel-medistream.c
+++ b/drivers/video/omap2/displays/panel-medistream.c
@@ -35,7 +35,7 @@ static struct omap_video_timings medistream_timings = {
 	.x_res = 1024,
 	.y_res = 600,
 
-	.pixel_clock	= 43970,
+	.pixel_clock	= 43200, //43970,
 
 	.hsw		= 49,
 	.hfp		= 38,
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index c4d0e44..34dc744 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -3096,6 +3096,7 @@ static irqreturn_t omap_dispc_irq_handler(int irq, void *arg)
 
 static void dispc_error_worker(struct work_struct *work)
 {
+	extern int fbskip;
 	int i;
 	u32 errors;
 	unsigned long flags;
@@ -3112,6 +3113,8 @@ static void dispc_error_worker(struct work_struct *work)
 		DISPC_IRQ_SYNC_LOST2,
 	};
 
+	if (fbskip) return;
+
 	spin_lock_irqsave(&dispc.irq_lock, flags);
 	errors = dispc.error_irqs;
 	dispc.error_irqs = 0;
diff --git a/drivers/video/omap2/vram.c b/drivers/video/omap2/vram.c
index 87e421e..92b8d04 100644
--- a/drivers/video/omap2/vram.c
+++ b/drivers/video/omap2/vram.c
@@ -305,6 +305,7 @@ err:
 
 static int _omap_vram_alloc(unsigned pages, unsigned long *paddr)
 {
+	extern int fbskip;
 	struct vram_region *rm;
 	struct vram_alloc *alloc;
 
@@ -337,7 +338,11 @@ found:
 
 		*paddr = start;
 
-		_omap_vram_clear(start, pages);
+		// Causes frame buffer setup by uboot to be erased
+		if(!fbskip)
+		{
+			_omap_vram_clear(start, pages);
+		}
 
 		return 0;
 	}
-- 
1.7.5.4