From 6ef5d407fee9452f6176706db0464dc6c475c5d5 Mon Sep 17 00:00:00 2001
From: Jordan Crouse <jordan.crouse@amd.com>
Date: Fri, 8 Dec 2006 02:40:52 -0800
Subject: [PATCH] --- yaml --- r: 43824 b: refs/heads/master c:
 4c1979c8963528cc6f52203ae62162ed22e171f4 h: refs/heads/master v: v3

---
 [refs]                                 |  2 +-
 trunk/drivers/video/geode/display_gx.c | 15 ++++++++++++---
 trunk/drivers/video/geode/display_gx.h |  2 +-
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/[refs] b/[refs]
index 5c7d8bab4aa2..72999686068c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4437cd1e98409e236a9d303fb742fdd53b3a20bb
+refs/heads/master: 4c1979c8963528cc6f52203ae62162ed22e171f4
diff --git a/trunk/drivers/video/geode/display_gx.c b/trunk/drivers/video/geode/display_gx.c
index 825c3405f5c2..0245169366b3 100644
--- a/trunk/drivers/video/geode/display_gx.c
+++ b/trunk/drivers/video/geode/display_gx.c
@@ -21,10 +21,19 @@
 #include "geodefb.h"
 #include "display_gx.h"
 
-int gx_frame_buffer_size(void)
+unsigned int gx_frame_buffer_size(void)
 {
-	/* Assuming 16 MiB. */
-	return 16*1024*1024;
+	unsigned int val;
+
+	/* FB size is reported by a virtual register */
+	/* Virtual register class = 0x02 */
+	/* VG_MEM_SIZE(512Kb units) = 0x00 */
+
+	outw(0xFC53, 0xAC1C);
+	outw(0x0200, 0xAC1C);
+
+	val = (unsigned int)(inw(0xAC1E)) & 0xFFl;
+	return (val << 19);
 }
 
 int gx_line_delta(int xres, int bpp)
diff --git a/trunk/drivers/video/geode/display_gx.h b/trunk/drivers/video/geode/display_gx.h
index 86c623361305..41e79f440670 100644
--- a/trunk/drivers/video/geode/display_gx.h
+++ b/trunk/drivers/video/geode/display_gx.h
@@ -11,7 +11,7 @@
 #ifndef __DISPLAY_GX_H__
 #define __DISPLAY_GX_H__
 
-int gx_frame_buffer_size(void);
+unsigned int gx_frame_buffer_size(void);
 int gx_line_delta(int xres, int bpp);
 
 extern struct geode_dc_ops gx_dc_ops;