This is a note to let you know that I've just added the patch titled
staging: gma500: get control from firmware framebuffer if
to the 2.6.39-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
staging-gma500-get-control-from-firmware-framebuffer-if.patch
and it can be found in the queue-2.6.39 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From aaa5c677910d313ca1318c905c799c459c6f0078 Mon Sep 17 00:00:00 2001
From: Michael Chang <[email protected]>
Date: Mon, 30 May 2011 14:28:25 +0800
Subject: staging: gma500: get control from firmware framebuffer if
conflicts
From: Michael Chang <[email protected]>
commit aaa5c677910d313ca1318c905c799c459c6f0078 upstream.
Many Linux distributions would enable vesafb in order to display
early stage boot splash. In this case, we will get garbled X
Window screen if running X fbdev on psbfb.
This is because fb0 is occupied by vesafb while psbfb is on fb1.
They tried to drive the same pieces of hardware at the same
time. With unmodified X start-up, it would try to use default
fb0 framebuffer device and unfortunately it is now broken
becaues fb1 supersedes it.
We should let psbfb takeover framebuffer control from vesafb
to get around this problem.
See also commit : 4410f3910947dcea8672280b3adecd53cec4e85e
Signed-off-by: Michael Chang <[email protected]>
Cc: Alan Cox <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/staging/gma500/psb_fb.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/staging/gma500/psb_fb.c
+++ b/drivers/staging/gma500/psb_fb.c
@@ -489,6 +489,16 @@ static int psbfb_create(struct psb_fbdev
info->screen_size = size;
memset(info->screen_base, 0, size);
+ if (dev_priv->pg->stolen_size) {
+ info->apertures = alloc_apertures(1);
+ if (!info->apertures) {
+ ret = -ENOMEM;
+ goto out_err0;
+ }
+ info->apertures->ranges[0].base = dev->mode_config.fb_base;
+ info->apertures->ranges[0].size = dev_priv->pg->stolen_size;
+ }
+
drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
sizes->fb_width, sizes->fb_height);
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.39/staging-gma500-get-control-from-firmware-framebuffer-if.patch
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