linux-stable.git/drivers/video/efifb.c, branch linux-3.7.y

efifb: Skip DMI checks if the bootloader knows what it's doing

2012-09-17T12:29:23+00:00

The majority of the DMI checks in efifb are for cases where the bootloader
has provided invalid information. However, on some machines the overrides
may do more harm than good due to configuration differences between machines
with the same machine identifier. It turns out that it's possible for the
bootloader to get the correct information on GOP-based systems, but we
can't guarantee that the kernel's being booted with one that's been updated
to do so. Add support for a capabilities flag that can be set by the
bootloader, and skip the DMI checks in that case. Additionally, set this
flag in the UEFI stub code.

Signed-off-by: Matthew Garrett 
Acked-by: Peter Jones 
Signed-off-by: Matt Fleming

vga: fix build when fbdev is a module

2012-04-24T08:50:21+00:00

This fixes the build breakage reported by Stephen in -next
when merging the drm-next tree.

Signed-off-by: Dave Airlie

efifb: Implement vga_default_device() (v2)

2012-04-24T08:50:18+00:00

EFI doesn't typically make use of the legacy VGA ROM, but it may still be
configured to pass that through to a given video device. This may lead to
an inaccurate choice of default video device. Add support to efifb to pick
out the correct active video device.

v2: fix if->ifdef

Signed-off-by: Matthew Garrett 
Acked-by: hpa@zytor.com
Cc: matt.fleming@intel.com
Signed-off-by: Dave Airlie

efifb: Fix call to wrong unregister function

2011-06-14T07:37:46+00:00

platform_device_unregister() needs to unregister the device, not the
driver.

Signed-off-by: Wanlong Gao 
Signed-off-by: Maarten Lankhorst 
Acked-by: Andy Lutomirski 
Signed-off-by: Paul Mundt

efifb: Disallow manual bind and unbind

2011-06-02T08:18:07+00:00

Both were buggy: bind would happily scribble over a real graphics
device and unbind wouldn't destroy the framebuffer.  Hotplugging
efifb makes no sense anyway, so just disable it.

As an added benefit, we save some runtime memory.

Signed-off-by: Andy Lutomirski 
Signed-off-by: Peter Jones 
Signed-off-by: Paul Mundt

efifb: Fix mismatched request/release_mem_region

2011-06-02T08:18:05+00:00

Signed-off-by: Andy Lutomirski 
Signed-off-by: Peter Jones 
Signed-off-by: Paul Mundt

efifb: Enable write-combining

2011-06-02T08:18:04+00:00

Running fbcon on an uncached framebuffer is remarkably slow.  So try
to enable write combining in efifb.

Without this patch, it takes 5.8 seconds from efifb probe to i915
probe (default options; no plymouth or quiet mode).  With this patch,
it only takes 1.7 seconds.  That means we wasted over 4 seconds just
writing to UC memory.

Signed-off-by: Andy Lutomirski 
Signed-off-by: Peter Jones 
Signed-off-by: Paul Mundt

efifb: fix int to pointer cast warning

2011-05-24T06:31:38+00:00

drivers/video/efifb.c:247: warning: cast to pointer from integer of different size

Signed-off-by: Konstantin Khlebnikov 
Signed-off-by: Peter Jones 
Signed-off-by: Paul Mundt

efifb: Add override for 11" Macbook Air 3,1

2011-04-06T17:58:10+00:00

The 11" Macbook Air appears to claim that its stride is 1366, when it's
actually 2048. Override it.

Signed-off-by: Matthew Garrett 
Signed-off-by: Peter Jones 
Signed-off-by: Paul Mundt

efifb: Support overriding fields FW tells us with the DMI data.

2011-04-06T17:58:10+00:00

Some machines apparently give us bogus linelength/stride/pitch data, so
we need to support letting the DMI table override the supplied data.

I bet you can't guess whose machines I'm talking about.

Signed-off-by: Peter Jones 
Signed-off-by: Paul Mundt