patches.armadillo800eva/0108-fbdev-sh_mobile_lcdc-Store-the-frame-buffer-base-add.patch

From c751b099194544ec0ff1e0e12a8a0b5afd14c8a9 Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Wed, 13 Jul 2011 12:13:47 +0200
Subject: fbdev: sh_mobile_lcdc: Store the frame buffer base address when
 panning

When the frame buffer base address is changed by a panning operation,
store it in the channel structure. It will be reused when runtime PM
code will use __sh_mobile_lcdc_start().

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
(cherry picked from commit 49d79ba2e39b5d3346e9e3ddf894eda72c743c85)

Signed-off-by: Simon Horman <horms@verge.net.au>
---
 drivers/video/sh_mobile_lcdcfb.c |   22 +++++++++-------------
 1 file changed, 9 insertions(+), 13 deletions(-)

diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c
index 292cfc0..69c267a 100644
--- a/drivers/video/sh_mobile_lcdcfb.c
+++ b/drivers/video/sh_mobile_lcdcfb.c
@@ -915,32 +915,28 @@ static int sh_mobile_fb_pan_display(struct fb_var_screeninfo *var,
 			base_addr_c += 2 * var->xoffset;
 		else
 			base_addr_c += var->xoffset;
-	} else
-		base_addr_c = 0;
+	}
 
-	if (!ch->meram_enabled) {
-		lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y);
-		if (base_addr_c)
-			lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c);
-	} else {
+	if (ch->meram_enabled) {
 		struct sh_mobile_meram_cfg *cfg;
 		struct sh_mobile_meram_info *mdev;
-		unsigned long icb_addr_y, icb_addr_c;
 		int ret;
 
 		cfg = ch->cfg.meram_cfg;
 		mdev = priv->meram_dev;
 		ret = mdev->ops->meram_update(mdev, cfg,
 					base_addr_y, base_addr_c,
-					&icb_addr_y, &icb_addr_c);
+					&base_addr_y, &base_addr_c);
 		if (ret)
 			return ret;
+	}
 
-		lcdc_write_chan_mirror(ch, LDSA1R, icb_addr_y);
-		if (icb_addr_c)
-			lcdc_write_chan_mirror(ch, LDSA2R, icb_addr_c);
+	ch->base_addr_y = base_addr_y;
+	ch->base_addr_c = base_addr_c;
 
-	}
+	lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y);
+	if (var->nonstd)
+		lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c);
 
 	if (lcdc_chan_is_sublcd(ch))
 		lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS);
-- 
1.7.10