20 Dec, 2011
1 commit
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This API will be used to support YUV frame buffer formats in a standard
way.Last but not least, create a much needed fbdev API documentation and
document the format setting APIs.Signed-off-by: Laurent Pinchart
Signed-off-by: Florian Tobias Schandinat
21 Jul, 2011
1 commit
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Btrfs needs to be able to control how filemap_write_and_wait_range() is called
in fsync to make it less of a painful operation, so push down taking i_mutex and
the calling of filemap_write_and_wait() down into the ->fsync() handlers. Some
file systems can drop taking the i_mutex altogether it seems, like ext3 and
ocfs2. For correctness sake I just pushed everything down in all cases to make
sure that we keep the current behavior the same for everybody, and then each
individual fs maintainer can make up their mind about what to do from there.
Thanks,Acked-by: Jan Kara
Signed-off-by: Josef Bacik
Signed-off-by: Al Viro
12 May, 2011
1 commit
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This just adds the refcount and the new registration lock logic. It
does not (for example) actually change the read/write/ioctl routines to
actually use the frame buffer that was opened: those function still end
up alway susing whatever the current frame buffer is at the time of the
call.Without this, if something holds the frame buffer open over a
framebuffer switch, the close() operation after the switch will access a
fb_info that has been free'd by the unregistering of the old frame
buffer.(The read/write/ioctl operations will normally not cause problems,
because they will - illogically - pick up the new fbcon instead. But a
switch that happens just as one of those is going on might see problems
too, the window is just much smaller: one individual op rather than the
whole open-close sequence.)This use-after-free is apparently fairly easily triggered by the Ubuntu
11.04 boot sequence.Acked-by: Tim Gardner
Tested-by: Daniel J Blueman
Tested-by: Anca Emanuel
Cc: Bruno Prémont
Cc: Alan Cox
Cc: Paul Mundt
Cc: Dave Airlie
Cc: Andy Whitcroft
Signed-off-by: Linus Torvalds
31 Mar, 2011
1 commit
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Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi
17 Mar, 2011
1 commit
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change from original version -- by advice of Paul Mundt
1. remove videomemorysize definitions
2. remove unifb_enable and unifb_setup
3. use dev_warn instead of printk in fb driver
4. remove judgement for FB_ACCEL_PUV3_UNIGFX
5. adjust clk_get and clk_set_rate calls
6. add resources definitions
7. remove unifb_option
8. adjust register for platform_device
9. adjust unifb_ops position and unifb_regs assignment positionSigned-off-by: Guan Xuetao
Acked-by: Arnd Bergmann
22 Dec, 2010
1 commit
17 Nov, 2010
1 commit
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There is an integer overflow in fb_set_user_cmap() because cmap->len * 2
can wrap. It's basically harmless. Your terminal will be messed up
until you type reset.This patch does three things to fix the bug.
First, it checks the return value of fb_copy_cmap() in fb_alloc_cmap().
That is enough to fix address the overflow.Second it checks for the integer overflow in fb_set_user_cmap().
Lastly I wanted to cap "cmap->len" in fb_set_user_cmap() much lower
because it gets used to determine the size of allocation. Unfortunately
no one knows what the limit should be. Instead what this patch does
is makes the allocation happen with GFP_KERNEL instead of GFP_ATOMIC
and lets the kmalloc() decide what values of cmap->len are reasonable.
To do this, the patch introduces a function called fb_alloc_cmap_gfp()
which is like fb_alloc_cmap() except that it takes a GFP flag.Signed-off-by: Dan Carpenter
Signed-off-by: Paul Mundt
15 Nov, 2010
2 commits
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Add parsing of E-EDID SVD entries. In this first version only a few
CEA/EIA-861E modes are implemented, more can be added as needed.Signed-off-by: Guennadi Liakhovetski
Signed-off-by: Paul Mundt -
Modern monitors/tvs have more extended EDID information blocks which can
contain extra detailed modes. This adds a fb_edid_add_monspecs function
which drivers can use to parse those additions blocks.Signed-off-by: Erik Gilling
Signed-off-by: Guennadi Liakhovetski
Signed-off-by: Paul Mundt
28 Oct, 2010
1 commit
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fb_{read,write} access the framebuffer using lots of fb_{read,write}l's
but don't check that the file position is aligned which can cause problems
on some architectures which do not support unaligned accesses.Since the operations are essentially memcpy_{from,to}io, new
fb_memcpy_{from,to}fb macros have been defined and these are used instead.For Sparc, fb_{read,write} macros use sbus_{read,write}, so this defines
new sbus_memcpy_{from,to}io functions the same as memcpy_{from,to}io but
using sbus_{read,write}b instead of {read,write}b.Signed-off-by: James Hogan
Acked-by: David S. Miller
Acked-by: Florian Tobias Schandinat
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
11 Aug, 2010
1 commit
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Jesse's initial patch commit said:
"At panic time (i.e. when oops_in_progress is set) we should try a bit
harder to update the screen and make sure output gets to the VT, since
some drivers are capable of flipping back to it.So make sure we try to unblank and update the display if called from a
panic context."I've enhanced this to add a flag to the vc that console layer can set to
indicate they want this behaviour to occur. This also adds support to
fbcon for that flag and adds an fb flag for drivers to indicate they want
to use the support. It enables this for KMS drivers.Signed-off-by: Dave Airlie
Signed-off-by: Jesse Barnes
Acked-by: James Simmons
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Greg Kroah-Hartman
05 Aug, 2010
1 commit
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Add fb ops to handle enter/exit of the kernel debugger. If present, the
fb core will register them with KGDB and they'll be called when the
debugger is entered and exited. The new functions are responsible for
switching to an appropriate debug framebuffer and restoring the
interrupted state at exit time.Signed-off-by: Jesse Barnes
Signed-off-by: Jason Wessel
20 Jul, 2010
1 commit
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If the kzalloc() fails we should return NULL. All the places that call
alloc_apertures() check for this already.Signed-off-by: Dan Carpenter
Acked-by: James Simmons
Acked-by: Marcin Slusarz
Signed-off-by: Dave Airlie
01 Jul, 2010
1 commit
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When I added the flags I must have been using a 25 line terminal and missed the following flags.
The collided with flag has one user in staging despite being in-tree for 5 years.
I'm happy to push this via my drm tree unless someone really wants to do it.
Signed-off-by: Dave Airlie
Cc: stable@kernel.org
28 May, 2010
1 commit
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Signed-off-by: Christoph Hellwig
Signed-off-by: Al Viro
25 May, 2010
1 commit
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FBIO_WAITFORVSYNC is currently implemented by matroxfb, atyfb, intelfb and
more. All of them keep redefining the same FBIO_WAITFORVSYNC macro over
and over again, so move it to linux/fb.h and clean up those duplicate
defines.Signed-off-by: Grazvydas Ignotas
Cc: Ville Syrjala
Cc: Grant Likely
Cc: Maik Broemme
Cc: Petr Vandrovec
Cc: Benjamin Herrenschmidt
Cc: Krzysztof Helt
Cc: "Hiremath, Vaibhav"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
18 May, 2010
3 commits
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let vga16fb claim 0xA0000+0x10000 region as its aperture;
drm drivers don't use it, so we have to detect it and kick
vga16fb manually - but only if drm is driving the primary cardSigned-off-by: Marcin Slusarz
Cc: James Simmons
Cc: Dave Airlie
Cc: Ben Skeggs
Signed-off-by: Dave Airlie -
Currently vesafb/efifb/... is kicked when hardware driver is registering
framebuffer. To do it hardware must be fully functional, so there's a short
window between start of initialisation and framebuffer registration when
two drivers touch the hardware. Unfortunately sometimes it breaks nouveau
initialisation.Fix it by kicking firmware driver(s) before we start touching the hardware.
Reported-by: Didier Spaier
Tested-by: Didier Spaier
Signed-off-by: Marcin Slusarz
Cc: Ben Skeggs
Cc: Peter Jones
Cc: Andrew Morton
Signed-off-by: Dave Airlie -
It removes a hack from nouveau code which had to detect which
region to pass to kick vesafb/efifb.Signed-off-by: Marcin Slusarz
Cc: Eric Anholt
Cc: Ben Skeggs
Cc: Thomas Hellstrom
Cc: Dave Airlie
Cc: Peter Jones
Cc: Benjamin Herrenschmidt
Signed-off-by: Dave Airlie
01 Mar, 2010
1 commit
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Many new laptops now come with 2 gpus, one to be used for low power
modes and one for gaming/on-ac applications. These GPUs are typically
wired to the laptop panel and VGA ports via a multiplexer unit which
is controlled via ACPI methods.4 combinations of systems typically exist - with 2 ACPI methods.
Intel/ATI - Lenovo W500/T500 - use ATPX ACPI method
ATI/ATI - some ASUS - use ATPX ACPI Method
Intel/Nvidia - - use _DSM ACPI method
Nvidia/Nvidia - - use _DSM ACPI method.TODO:
This patch adds support for the ATPX method and initial bits
for the _DSM methods that need to written by someone with
access to the hardware.
Add a proper non-debugfs interface - need to get some proper
testing first.v2: add power up/down support for both devices
on W500 puts i915/radeon into D3 and cuts power to radeon.v3: redo probing methods, no DMI list, drm devices call to
register with switcheroo, it tries to find an ATPX method on
any device and once there is two devices + ATPX it inits the
switcher.v4: ATPX msg handling using buffers - should work on more machines
v5: rearchitect after more mjg59 discussion - move ATPX handling to
radeon driver.v6: add file headers + initial nouveau bits (to be filled out).
v7: merge delayed switcher code.
v8: avoid suspend/resume of gpu that is off
v9: rearchitect - mjg59 is always right. - move all ATPX code to
radeon, should allow simpler DSM also proper ATRM handlingv10: add ATRM support for radeon BIOS, add mutex to lock vgasr_priv
v11: fix bug in resuming Intel for 2nd time.
v12: start fixing up nvidia code blindly.
v13: blindly guess at finishing nvidia code
v14: remove radeon audio hacks - fix up intel resume more like upstream
v15: clean up printks + remove unnecessary igd/dis pointers
mount debugfs
/sys/kernel/debug/vgaswitcheroo/switch - should exist if ATPX detected
+ 2 cards.DIS - immediate change to discrete
IGD - immediate change to IGD
DDIS - delayed change to discrete
DIGD - delayed change to IGD
ON - turn on not in use
OFF - turn off not in useTested on W500 (Intel/ATI) and T500 (Intel/ATI)
Signed-off-by: Dave Airlie
11 Dec, 2009
1 commit
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* 'xen/fbdev' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen:
xen pvfb: Inhibit VM_IO flag to be set on vmalloc-ed framebuffers.
fb-defio: Inhibit VM_IO flag to be set on vmalloc-ed framebuffers.
fb-defio: If FBINFO_VIRTFB is defined, do not set VM_IO flag.
Fix toogle whether xenbus driver should be built as module or part of kernel.
04 Dec, 2009
1 commit
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Most users (except sh_mobile_lcdcfb.c) get their framebuffer from
vmalloc. Setting VM_IO is not necessary as the memory obtained
from vmalloc is System RAM type and is not susceptible to PCI memory
constraints.Signed-off-by: Konrad Rzeszutek Wilk
Signed-off-by: Jeremy Fitzhardinge
Acked-by: Jaya Kumar
12 Nov, 2009
1 commit
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Remove fb_save_state() and fb_restore_state operations from frame buffer layer.
They are used only in two drivers:
1. savagefb - and cause bug #11248
2. uvesafbUsage of these operations is misunderstood in both drivers so kill these
operations, fix the bug #11248 and avoid confusion in the future.Tested on Savage 3D/MV card and the patch fixes the bug #11248.
The frame buffer layer uses these funtions during switch between graphics
and text mode of the console, but these drivers saves state before
switching of the frame buffer (in the fb_open) and after releasing it (in
the fb_release). This defeats the purpose of these operations.Addresses http://bugzilla.kernel.org/show_bug.cgi?id=11248
Signed-off-by: Krzysztof Helt
Reported-by: Jochen Hein
Tested-by: Jochen Hein
Cc: Geert Uytterhoeven
Cc: Michal Januszewski
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
12 Sep, 2009
1 commit
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Add ID 99 for PXA3xx frame buffers and report it in the pxa frame buffer
conditionally, depending on a new flag in struct pxafb_mach_info.Signed-off-by: Daniel Mack
Cc: linux-fbdev-devel@lists.sourceforge.net
Cc: Dennis Oliver Kropp
Cc: Sven Neumann
Cc: Guennadi Liakhovetski
Signed-off-by: Eric Miao
01 Jul, 2009
1 commit
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Add a mutex to avoid a circular locking problem between the mm layer
semaphore and fbdev ioctl mutex through the fb_mmap() call.Also, add mutex to all places where smem_start and smem_len fields change
so the mutex inside the fb_mmap() is actually used. Changing of these
fields before calling the framebuffer_register() are not mutexed.This is 2.6.31 material. It removes one lockdep (fb_mmap() and
register_framebuffer()) but there is still another one (fb_release() and
register_framebuffer()). It also cleans up handling of the smem_start and
smem_len fields used by mutexed section of the fb_mmap().Signed-off-by: Krzysztof Helt
Cc: Peter Zijlstra
Cc: "Rafael J. Wysocki"
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Jun, 2009
2 commits
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Signed-off-by: Mike Frysinger
Cc: Krzysztof Helt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
With KMS we have ran into an issue where we really want the KMS fb driver
to be the one running the console, so panics etc can be shown by switching
out of X etc.However with vesafb/efifb built-in, we end up with those on fb0 and the
KMS fb driver on fb1, driving the same piece of hw, so this adds an fb
info flag to denote a firmware fbdev, and adds a new aperture base/size
range which can be compared when the hw drivers are installed to see if
there is a conflict with a firmware driver, and if there is the firmware
driver is unregistered and the hw driver takes over.It uses new aperture_base/size members instead of comparing on the fix
smem_start/length, as smem_start/length might for example only cover the
first 1MB of the PCI aperture, and we could allocate the kms fb from 8MB
into the aperture, thus they would never overlap.[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Dave Airlie
Acked-by: Peter Jones
Cc: Geert Uytterhoeven
Cc: Krzysztof Helt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
14 Apr, 2009
1 commit
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The documentation about the meaning of the color component bitfield
lengths in pseudocolor modes is inconsistent. Fix it, so that it
indicates the correct interpretation everywhere, i.e. that 1 << length is
the number of palette entries.Signed-off-by: Michal Januszewski
Acked-by: Krzysztof Helt
Cc:
Acked-by: Geert Uytterhoeven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Apr, 2009
2 commits
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Before:
text data bss dec hex filename
3648 2910 32 6590 19be drivers/video/backlight/backlight.o
3226 2812 32 6070 17b6 drivers/video/backlight/lcd.o
30990 16688 8480 56158 db5e drivers/video/console/fbcon.o
15488 8400 24 23912 5d68 drivers/video/fbmem.oAfter:
text data bss dec hex filename
3537 2870 32 6439 1927 drivers/video/backlight/backlight.o
3131 2772 32 5935 172f drivers/video/backlight/lcd.o
30876 16648 8480 56004 dac4 drivers/video/console/fbcon.o
15506 8400 24 23930 5d7a drivers/video/fbmem.oCc: Andrea Righi
Cc: Geert Uytterhoeven
Cc: Krzysztof Helt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add an accelerator constant so almost all Cirrus are recognized as
accelerators by the fbset command.Signed-off-by: Krzysztof Helt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Feb, 2009
1 commit
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Avoid calling copy_from/to_user() with fb_info->lock mutex held in fbmem
ioctl().fb_mmap() is called under mm->mmap_sem (A) held, that also acquires
fb_info->lock (B); fb_ioctl() takes fb_info->lock (B) and does
copy_from/to_user() that might acquire mm->mmap_sem (A), causing a
deadlock.NOTE: it doesn't push down the fb_info->lock in each own driver's
fb_ioctl(), so there are still potential deadlocks elsewhere.Signed-off-by: Andrea Righi
Cc: Dave Jones
Cc: "Rafael J. Wysocki"
Cc: Johannes Weiner
Cc: Krzysztof Helt
Cc: Harvey Harrison
Cc: Stefan Richter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
16 Jan, 2009
1 commit
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Impact: fix 15 make headers_check warnings:
include of is preferred over
Signed-off-by: Jaswinder Singh Rajput
Cc: Ingo Molnar
Cc: Sam Ravnborg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
22 Dec, 2008
1 commit
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Signed-off-by: Paul Mundt
20 Oct, 2008
1 commit
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Change lock_kernel()/unlock_kernel() to local fb mutex. Each frame buffer
instance has its own mutex.The one line try_to_load() function is unrolled to request_module() in two
places for readability.[righi.andrea@gmail.com: fb: fix NULL pointer BUG dereference in fb_open()]
Signed-off-by: Krzysztof Helt
Signed-off-by: Andrea Righi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
21 Aug, 2008
1 commit
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Fixes kernel BUG at lib/radix-tree.c:473.
Previously the handler was incidentally provided by tmpfs but this was
removed with:commit 14fcc23fdc78e9d32372553ccf21758a9bd56fa1
Author: Hugh Dickins
Date: Mon Jul 28 15:46:19 2008 -0700tmpfs: fix kernel BUG in shmem_delete_inode
relying on this behaviour was incorrect in any case and the BUG also
appeared when the device node was on an ext3 filesystem.v2: override a_ops at open() time rather than mmap() time to minimise
races per AKPM's concerns.Signed-off-by: Ian Campbell
Cc: Jaya Kumar
Cc: Nick Piggin
Cc: Peter Zijlstra
Cc: Hugh Dickins
Cc: Johannes Weiner
Cc: Jeremy Fitzhardinge
Cc: Kel Modderman
Cc: Markus Armbruster
Cc: Krzysztof Helt
Cc: [14fcc23fd is in 2.6.25.14 and 2.6.26.1]
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
25 Jul, 2008
2 commits
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Currently, linux/major.h defines a GRAPHDEV_MAJOR (29) that nobody uses,
and linux/fb.h defines the real FB_MAJOR (also 29), that only fbmem.c
needs. Drop GRAPHDEV_MAJOR from major.h, move FB_MAJOR definition from
fb.h to major.h, and fix fbmem.c to use major.h's definition.Signed-off-by: Philippe De Muyter
Cc: Krzysztof Helt
Cc: "Antonino A. Daplas"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch replaces deprecated constant FB_ACCELF_TEXT with
FBINFO_HWACCEL_DISABLED and adds constants for Trident families of
accelerators.The FBINFO_HWACCEL_DISABLED is correctly used so noaccel parameter works
now.Signed-off-by: Krzysztof Helt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Apr, 2008
1 commit
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Add support for the framebuffers with non-native endianness. This is done via
FBINFO_FOREIGN_ENDIAN flag that will be used by the drivers. Depending on the
host endianness this flag will be overwritten by FBINFO_BE_MATH internal flag,
or cleared.Tested to work on MPC8360E-RDK (BE) + Fujitsu MINT framebuffer (LE).
Signed-off-by: Anton Vorontsov
Cc: "Antonino A. Daplas"
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc:
Cc: Clemens Koller
Cc: Krzysztof Helt
Cc: Geert Uytterhoeven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Oct, 2007
2 commits
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Move the extern declaration for global_mode_option to and rename
the variable to fb_mode_option.Signed-off-by: Geert Uytterhoeven
Cc: "Antonino A. Daplas"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Intel FB: allow odd- and even-field-first in interlaced modes, and
proper sync to vertical retraceSigned-off-by: Krzysztof Halasa
Cc: "Antonino A. Daplas"
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
