kernel.git/drivers/video/efifb.c, branch linux-3.2.y

fbdev/efifb: Fix 16 color palette entry calculation

2017-02-23T03:50:46Z

commit d50b3f43db739f03fcf8c0a00664b3d2fed0496e upstream. When using efifb with a 16-bit (5:6:5) visual, fbcon's text is rendered in the wrong colors - e.g. text gray (#aaaaaa) is rendered as green (#50bc50) and neighboring pixels have slightly different values (such as #50bc78). The reason is that fbcon loads its 16 color palette through efifb_setcolreg(), which in turn calculates a 32-bit value to write into memory for each palette index. Until now, this code could only handle 8-bit visuals and didn't mask overlapping values when ORing them. With this patch, fbcon displays the correct colors when a qemu VM is booted in 16-bit mode (in GRUB: "set gfxpayload=800x600x16"). Fixes: 7c83172b98e5 ("x86_64 EFI boot support: EFI frame buffer driver") # v2.6.24+ Signed-off-by: Max Staudt Acked-By: Peter Jones Signed-off-by: Tomi Valkeinen [bwh: Backported to 3.2: adjust filename] Signed-off-by: Ben Hutchings

efifb: Fix call to wrong unregister function

2011-06-14T07:37:46Z

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

2011-06-02T08:18:07Z

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

2011-06-02T08:18:05Z

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

efifb: Enable write-combining

2011-06-02T08:18:04Z

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

2011-05-24T06:31:38Z

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

2011-04-06T17:58:10Z

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.

2011-04-06T17:58:10Z

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

efifb: support AMD Radeon HD 6490

2011-03-31T04:49:09Z

This patch enables the framebuffer for the AMD Radeon 6490 found in the new MacBook Pro 8,2 generation. The framebuffer's base is located at 0x90010000, the method for obtaining it was found in the same way mentioned in https://patchwork.kernel.org/patch/91704/ Signed-off-by: Davidlohr Bueso Signed-off-by: Jonathan Gonzalez Signed-off-by: Paul Mundt

efifb: support the EFI framebuffer on more Apple hardware

2010-09-23T00:22:39Z

Enable the EFI framebuffer on 14 more Macs, including the iMac11,1 iMac10,1 iMac8,1 Macmini3,1 Macmini4,1 MacBook5,1 MacBook6,1 MacBook7,1 MacBookPro2,2 MacBookPro5,2 MacBookPro5,3 MacBookPro6,1 MacBookPro6,2 and MacBookPro7,1 Information gathered from various user submissions. https://bugzilla.redhat.com/show_bug.cgi?id=528232 http://ubuntuforums.org/showthread.php?t=1557326 [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Luke Macken Signed-off-by: Peter Jones Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds