The patch titled
FB: Get the Geode GX frambuffer size from the BIOS
has been added to the -mm tree. Its filename is
fb-get-the-geode-gx-frambuffer-size-from-the-bios.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: FB: Get the Geode GX frambuffer size from the BIOS
From: Jordan Crouse <jordan.crouse@xxxxxxx>
Use the Geode GX BIOS virtual registers to get the actual size of the
framebuffer.
Signed-off-by: Jordan Crouse <jordan.crouse@xxxxxxx>
Cc: "Antonino A. Daplas" <adaplas@xxxxxxx>
Cc: James Simmons <jsimmons@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/video/geode/display_gx.c | 15 ++++++++++++---
drivers/video/geode/display_gx.h | 2 +-
2 files changed, 13 insertions(+), 4 deletions(-)
diff -puN drivers/video/geode/display_gx.c~fb-get-the-geode-gx-frambuffer-size-from-the-bios drivers/video/geode/display_gx.c
--- a/drivers/video/geode/display_gx.c~fb-get-the-geode-gx-frambuffer-size-from-the-bios
+++ a/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 -puN drivers/video/geode/display_gx.h~fb-get-the-geode-gx-frambuffer-size-from-the-bios drivers/video/geode/display_gx.h
--- a/drivers/video/geode/display_gx.h~fb-get-the-geode-gx-frambuffer-size-from-the-bios
+++ a/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;
_
Patches currently in -mm which might be from jordan.crouse@xxxxxxx are
acpi-clear-gpe-before-disabling-it.patch
git-cryptodev.patch
video-get-the-default-mode-from-the-right-database.patch
fb-get-the-geode-gx-frambuffer-size-from-the-bios.patch
gxfb-fixups-for-the-amd-geode-gx.patch
gxfb-fixups-for-the-amd-geode-gx-tidy.patch
gxfb-support-flat-panel-timings.patch
gxfb-support-flat-panel-timings-tidy.patch
gxfb-support-command-line-options.patch
gxfb-support-command-line-options-tidy.patch
gxfb-fixup-flatpanel-detection.patch
gxfb-turn-on-the-flatpanel-power-and-data.patch
-
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