Dave Airlie [Wed, 6 Oct 2010 02:57:54 +0000 (12:57 +1000)]
Merge branch 'drm-radeon-next' of ../drm-radeon-next into drm-core-next
* 'drm-radeon-next' of ../drm-radeon-next:
drm/radeon/kms: add drm blit support for evergreen
drm/radeon: Modify radeon_pm_in_vbl to use radeon_get_crtc_scanoutpos()
drm/radeon: Add function for display scanout position query.
drm/radeon/kms: rework spread spectrum handling
drm/radeon/kms: remove new pll algo
drm/radeon/kms: remove some pll algo flags
drm/radeon/kms: prefer high post dividers in legacy pll algo
drm/radeon/kms: properly handle 40 bit MC addresses in the cursor code
drm/radeon: add properties to configure the width of the underscan borders
drm/radeon/kms/r6xx+: use new style fencing (v3)
drm/radeon/kms: enable writeback (v2)
drm/radeon/kms: clean up r6xx/r7xx blit init (v2)
Dave Airlie [Wed, 6 Oct 2010 02:57:50 +0000 (12:57 +1000)]
Merge branch 'drm-kdb-next' into drm-core-next
* drm-kdb-next:
drm/nouveau/kms: Avoid a hang entering KDB with VT accel on.
radeon, kdb, kms: Save and restore the LUT on atomic KMS enter/exit
drm, kdb, kms: Add an enter argument to mode_set_base_atomic() API
drm/nouveau/kms: Implement KDB debug hooks for nouveau KMS.
drm/radeon/kms: Implement KDB debug hooks for radeon KMS.
Dave Airlie [Wed, 6 Oct 2010 02:38:04 +0000 (12:38 +1000)]
Merge remote branch 'nouveau/for-airlied' of ../drm-nouveau-next into drm-core-next
[airlied - add fix for vmwgfx build]
* 'nouveau/for-airlied' of ../drm-nouveau-next: (93 commits)
drm/ttm: restructure to allow driver to plug in alternate memory manager
drm/ttm: introduce utility function to free an allocated memory node
drm/nouveau: fix thinkos in mem timing table recordlen check
drm/nouveau: parse voltage from perf 0x40 entires
drm/nouveau: don't use the default pll limits in table v2.1 on nv50+ cards
drm/nv50: Fix large 3D performance regression caused by the interchannel sync patches.
drm/nouveau: Synchronize buffer object moves in hardware.
drm/nouveau: Use semaphores to handle inter-channel sync in hardware.
drm/nouveau: Provide a means to have arbitrary work run on fence completion.
drm/nouveau: Minor refactoring/cleanup of the fence code.
drm/nouveau: Add a module option to force card POST.
drm/nv50: prevent (IB_PUT == IB_GET) for occurring unless idle
drm/nv0x-nv4x: Leave the 0x40 bit untouched when changing CRE_LCD.
drm/nv30-nv40: Fix postdivider mask when writing engine/memory PLLs.
drm/nouveau: Fix perf table parsing on BMP v5.25.
drm/nouveau: fix required mode bandwidth calculation for DP
drm/nouveau: fix typo in c2aa91afea5f7e7ae4530fabd37414a79c03328c
drm/nva3: split pm backend out from nv50
drm/nouveau: run perflvl and M table scripts on mem clock change
drm/nouveau: pass perflvl struct to clock_pre()
...
Chris Ball [Sun, 26 Sep 2010 11:47:27 +0000 (06:47 -0500)]
drm/nouveau/kms: Avoid a hang entering KDB with VT accel on.
Francisco Jerez advises that pre-nv20 cards would hang if we entered
kdb with accel on and IRQs disabled, so we now disable accel before
entering kdb and re-enable it on the way back out.
Reported-by: Francisco Jerez <currojerez@riseup.net> Signed-off-by: Chris Ball <cjb@laptop.org> Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Jason Wessel [Sun, 26 Sep 2010 11:47:26 +0000 (06:47 -0500)]
radeon, kdb, kms: Save and restore the LUT on atomic KMS enter/exit
When changing VTs non-atomically the kernel works in conjunction with
the Xserver in user space and receives the LUT information from the
Xserver via a system call. When changing modes atomically for kdb,
this information must be saved and restored without disturbing user
space as if nothing ever happened.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com> CC: Jesse Barnes <jbarnes@virtuousgeek.org> CC: David Airlie <airlied@linux.ie> CC: dri-devel@lists.freedesktop.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Jason Wessel [Sun, 26 Sep 2010 11:47:25 +0000 (06:47 -0500)]
drm, kdb, kms: Add an enter argument to mode_set_base_atomic() API
Some devices such as the radeon chips receive information from user
space which needs to be saved when executing an atomic mode set
operation, else the user space would have to be queried again for the
information.
This patch extends the mode_set_base_atomic() call to pass an argument
to indicate if this is an entry or an exit from an atomic kernel mode
set change. Individual drm drivers can properly save and restore
state accordingly.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com> CC: Jesse Barnes <jbarnes@virtuousgeek.org> CC: David Airlie <airlied@linux.ie> CC: dri-devel@lists.freedesktop.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Wed, 6 Oct 2010 01:47:56 +0000 (11:47 +1000)]
Merge branch 'drm-vmware-next' into drm-core-next
* drm-vmware-next:
drm/vmwgfx: Bump minor and driver date
drm/vmwgfx: Save at least one screen layout
drm/vmwgfx: Add modinfo version
drm/vmwgfx: Add a parameter to get the max fb size
drm/vmwgfx: Don't flush fb if we're in the suspended state.
drm/vmwgfx: Prune modes based on available VRAM size
drm/vmwgfx: Take the ttm lock around the dirty ioctl
drm: vmwgfx: Add a struct drm_file parameter to the dirty framebuffer callback
drm/vmwgfx: Add new-style PM hooks to improve hibernation behavior
drm/vmwgfx: Fix ACPI S3 & S4 functionality.
drm/vmwgfx: Really support other depths than 32
Alex Deucher [Thu, 9 Sep 2010 15:33:36 +0000 (11:33 -0400)]
drm/radeon/kms: add drm blit support for evergreen
This patch implements blit support for bo moves using
the 3D engine. It uses the same method as r6xx/r7xx:
- store the base state in an IB
- emit variable state and vertex buffers to do the blit
This allows the hw to move bos using the 3D engine and allows
full use of vram beyond the pci aperture size.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Mario Kleiner [Tue, 5 Oct 2010 23:57:37 +0000 (19:57 -0400)]
drm/radeon: Modify radeon_pm_in_vbl to use radeon_get_crtc_scanoutpos()
radeon_pm_in_vbl() didn't report in vblank status accurately. Make
it a wrapper around radeon_get_crtc_scanoutpos() which corrects for
biases, so it reports accurately.
radeon_pm_in_vbl() will only report in_vbl if all active crtc's
are currently inside vblank.
agd5f: use rdev->num_crtc rather than hardcoding the crtc count
Signed-off-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de> Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Mario Kleiner [Tue, 5 Oct 2010 23:57:36 +0000 (19:57 -0400)]
drm/radeon: Add function for display scanout position query.
radeon_get_crtc_scanoutpos() returns the current horizontal
and vertical scanout position of a crtc. It also reports if
the display scanout is currently inside the vblank area.
hpos reports current horizontal pixel scanout position.
vpos reports the current scanned out line as a value >= 0
in active scanout. If the scanout is inside vblank area, it
reports a negative value, the number of scanlines until
end of vblank aka start of active scanout, e.g., -3 ==
"At most 3 scanlines until end of vblank".
This code is derived from radeon_pm_in_vbl(), tested on
R500 and R600.
Signed-off-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de> Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Mon, 4 Oct 2010 21:13:01 +0000 (17:13 -0400)]
drm/radeon/kms: rework spread spectrum handling
This patch reworks spread spectrum handling to enable it
properly on lvds and DP/eDP links. It also fixes several
bugs in the old spread spectrum code.
- Use the ss recommended reference divider if available
when calculating the pll
- Use the proper ss command tables on pre-DCE3 asics
- Avoid reading past the end of the ss info tables
- Enable ss on evergreen asics (lvds, dp, tmds)
- Enable ss on DP/eDP links
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Wed, 29 Sep 2010 15:37:41 +0000 (11:37 -0400)]
drm/radeon/kms: remove new pll algo
The recent changes to the old algo (prefer high post div)
coupled with the range and precision limitations of using
fixed point with the new algo make the new algo less
useful. So drop the new algo. This should work as well
or better than the old new/old combinations and simplifies
the code a lot.
Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=30218
among others.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Marius Gröger [Tue, 21 Sep 2010 19:30:59 +0000 (21:30 +0200)]
drm/radeon: add properties to configure the width of the underscan borders
This allows for a more exact fitting on the physical
display. The new properties default to zero which corresponds to the
previous underscan border width[height] formula:
(display_width[display_width] >> 5) + 16.
Example to set a horizontal border width of 30 and a vertikal border
height of 22:
Signed-off-by: Marius Gröger <marius.groeger@googlemail.com> Reviewed-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Sat, 4 Sep 2010 09:04:34 +0000 (05:04 -0400)]
drm/radeon/kms/r6xx+: use new style fencing (v3)
On r6xx+ a newer fence mechanism was implemented to replace
the old wait_until plus scratch regs setup. A single EOP event
will flush the destination caches, write a fence value, and generate
an interrupt. This is the recommended fence mechanism on r6xx+ asics.
This requires my previous writeback patch.
v2: fix typo that enabled event fence checking on all asics
rather than just r6xx+.
v3: properly enable EOP interrupts
Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=29972
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Fri, 27 Aug 2010 22:25:25 +0000 (18:25 -0400)]
drm/radeon/kms: enable writeback (v2)
When writeback is enabled, the GPU shadows writes to certain
registers into a buffer in memory. The driver can then read
the values from the shadow rather than reading back from the
register across the bus. Writeback can be disabled by setting
the no_wb module param to 1.
On r6xx/r7xx/evergreen, the following registers are shadowed:
- CP scratch registers
- CP read pointer
- IH write pointer
On r1xx-rr5xx, the following registers are shadowed:
- CP scratch registers
- CP read pointer
v2:
- Combine wb patches for r6xx-evergreen and r1xx-r5xx
- Writeback is disabled on AGP boards since it tends to be
unreliable on AGP using the gart.
- Check radeon_wb_init return values properly.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
drm/vmwgfx: Take the ttm lock around the dirty ioctl
This makes sure noone accesses the fifo while it's taken down using the
dirty ioctl.
Also make sure all workqueues are idled before the fifo is taken down.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
drm/vmwgfx: Add new-style PM hooks to improve hibernation behavior
Add the new-style PM hooks prepare and complete. This allows us to
power up the device again after the hibernation image has been created, and
display output will thus be active until the VM is finally powered off.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Wed, 6 Oct 2010 00:11:56 +0000 (10:11 +1000)]
Merge remote branch 'intel/drm-intel-next' of ../drm-next into drm-core-next
* 'intel/drm-intel-next' of ../drm-next: (266 commits)
drm/i915: Avoid circular locking from intel_fbdev_fini()
drm/i915: mark display port DPMS state as 'ON' when enabling output
drm/i915: Skip pread/pwrite if size to copy is 0.
drm/i915: avoid struct mutex output_poll mutex lock loop on unload
drm/i915: Rephrase pwrite bounds checking to avoid any potential overflow
drm/i915: Sanity check pread/pwrite
drm/i915: Use pipe state to tell when pipe is off
drm/i915: vblank status not valid while training display port
drivers/gpu/drm/i915/i915_gem.c: Add missing error handling code
drm/i915: Don't mask the return code whilst relocating.
drm/i915: If the GPU hangs twice within 5 seconds, declare it wedged.
drm/i915: Only print 'generating error event' if we actually are
drm/i915: Try to reset gen2 devices.
drm/i915: Clear fence registers on GPU reset
drm/i915: Force the domain to CPU on unbinding whilst wedged.
drm: Move the GTT accounting to i915
drm/i915: Fix refleak during eviction.
i915: Added function to initialize VBT settings
drm/i915: Remove redundant deletion of obj->gpu_write_list
drm/i915: Make get/put pages static
...
Ben Skeggs [Wed, 4 Aug 2010 02:07:08 +0000 (12:07 +1000)]
drm/ttm: introduce utility function to free an allocated memory node
Existing core code/drivers call drm_mm_put_block on ttm_mem_reg.mm_node
directly. Future patches will modify TTM behaviour in such a way that
ttm_mem_reg.mm_node doesn't necessarily belong to drm_mm.
Reviewed-by: Jerome Glisse <jglisse@redhat.com> Acked-by: Thomas Hellström <thellstrom@vmware.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Tue, 28 Sep 2010 00:23:20 +0000 (10:23 +1000)]
drm/nouveau: fix required mode bandwidth calculation for DP
This should fix eDP on certain laptops with 18-bit panels, we were rejecting
the panel's native mode due to thinking there was insufficient bandwidth
for it.
Ben Skeggs [Sun, 26 Sep 2010 23:47:56 +0000 (09:47 +1000)]
drm/nouveau: pass perflvl struct to clock_pre()
On certain boards, there's BIOS scripts and memory timings that need to
be modified with the memclk. Just pass in the entire perflvl struct and
let the chipset-specific code decide what to do.
Roy Spliet [Fri, 17 Sep 2010 21:17:24 +0000 (23:17 +0200)]
drm/nouveau: Import initial memory timing work
This isn't correct everywhere yet, but since we don't use the data yet
it's perfectly safe to push in, and the information we gain from logs
will help to fix the remaining issues.
v2 (Ben Skeggs <bskeggs@redhat.com>):
- fixed up formatting
- free parsed timing info on takedown
- switched timing table printout to debug loglevel
Signed-off-by: Roy Spliet <r.spliet@student.tudelft.nl> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Chris Wilson [Mon, 4 Oct 2010 14:33:04 +0000 (15:33 +0100)]
drm/i915: Avoid circular locking from intel_fbdev_fini()
lockdep spots that the fb_info->lock takes the dev->struct_mutex during
init (due to the device probing) and so we can not hold
dev->struct_mutex when unregistering the framebuffer. Simply reverse the
order of initialisation during cleanup and so do the intel_fbdev_fini()
before the intel_modeset_cleanup.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Keith Packard [Sun, 3 Oct 2010 20:33:49 +0000 (13:33 -0700)]
drm/i915: mark display port DPMS state as 'ON' when enabling output
The display port DPMS state is tracked internally in the display port
driver so that when a hotplug event comes along, the driver can know
whether to try retraining the link. This doesn't work well if the
driver never sets the DPMS state to ON when the output is enabled.
Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Keith Packard [Mon, 4 Oct 2010 02:36:26 +0000 (19:36 -0700)]
drm/i915: avoid struct mutex output_poll mutex lock loop on unload
Cancel the output polling work proc before acquiring the struct mutex
to avoid acquiring the work proc mutex with the struct mutex
held. This avoids inverting the lock order seen when the work proc
runs.
Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Chris Wilson [Sun, 26 Sep 2010 19:50:05 +0000 (20:50 +0100)]
drm/i915: Sanity check pread/pwrite
Move the access control up from the fast paths, which are no longer
universally taken first, up into the caller. This then duplicates some
sanity checking along the slow paths, but is much simpler.
Tracked as CVE-2010-2962.
Reported-by: Kees Cook <kees@ubuntu.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
Keith Packard [Sun, 3 Oct 2010 07:33:06 +0000 (00:33 -0700)]
drm/i915: Use pipe state to tell when pipe is off
Instead of waiting for the display line value to settle, we can simply
wait for the pipe configuration register 'state' bit to turn off.
Contrarywise, disabling the plane will not cause the display line
value to stop changing, so instead we wait for the vblank interrupt
bit to get set. And, we only do this when we're not about to wait for
the pipe to turn off.
Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Keith Packard [Sun, 3 Oct 2010 07:33:05 +0000 (00:33 -0700)]
drm/i915: vblank status not valid while training display port
While the display port is in training mode, vblank interrupts don't
occur. Because we have to wait for the display port output to turn on
before starting the training sequence, enable the output in 'normal'
mode so that we can tell when a vblank has occurred, then start the
training sequence.
Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Chris Wilson [Sat, 2 Oct 2010 14:12:41 +0000 (15:12 +0100)]
drm/i915: Don't mask the return code whilst relocating.
The return from move_to_gtt_domain() may indicate a pending signal which
needs to handled as opposed to an actual error, for instance, so report
the original return value rather than forcing an EINVAL.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Chris Wilson [Fri, 1 Oct 2010 13:57:56 +0000 (14:57 +0100)]
drm/i915: If the GPU hangs twice within 5 seconds, declare it wedged.
The issue is that we may become stuck executing a long running shader
and continually attempt to reset the GPU. (Or maybe we tickle some bug
and need to break the vicious cycle.) So if we are detect a second hang
within 5 seconds, give up trying to programme the GPU and report it
wedged.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Chris Wilson [Thu, 30 Sep 2010 14:08:57 +0000 (15:08 +0100)]
drm/i915: Force the domain to CPU on unbinding whilst wedged.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=30083 Reported-by: Sitsofe Wheeler <sitsofe@yahoo.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Chris Wilson [Thu, 30 Sep 2010 10:46:12 +0000 (11:46 +0100)]
drm: Move the GTT accounting to i915
Only drm/i915 does the bookkeeping that makes the information useful,
and the information maintained is driver specific, so move it out of the
core and into its single user.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Dave Airlie <airlied@redhat.com>
vmwgfx: Fix fb VRAM pinning failure due to fragmentation
If the soon-to-be scanout buffer is partly covering the intended
VRAM region, move and pin will fail. In that case, just move it out
to system before attempting to move it in again.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
This is to avoid accessing uninitialized data during
drm_irq_uninstall and vblank ioctls. At the same time, enable error check from
drm_kms_init which previously appeared to ignore all errors.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
We add an option not to enable fbdev, this option is off (0) by default.
Not enabling fbdev at load time makes it possible to co-operate with
vga16fb and vga text mode when VT switching.
However, if 3D resources are active when VT switching, we're currently
not able to switch over to vga, due to device limitations.
This fixes a bug where we previously lost 3D state during VT switch.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Chris Wilson [Thu, 30 Sep 2010 08:10:26 +0000 (09:10 +0100)]
drm: Hold the mutex when dropping the last GEM reference (v2)
In order to be fully threadsafe we need to check that the drm_gem_object
refcount is still 0 after acquiring the mutex in order to call the free
function. Otherwise, we may encounter scenarios like:
Note that no driver is currently using the free_unlocked vfunc and it is
scheduled for removal, hasten that process.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=30454 Reported-and-Tested-by: Magnus Kessler <Magnus.Kessler@gmx.net> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Mon, 27 Sep 2010 06:17:17 +0000 (16:17 +1000)]
drm/gem: handlecount isn't really a kref so don't make it one.
There were lots of places being inconsistent since handle count
looked like a kref but it really wasn't.
Fix this my just making handle count an atomic on the object,
and have it increase the normal object kref.
Now i915/radeon/nouveau drivers can drop the normal reference on
userspace object creation, and have the handle hold it.
This patch fixes a memory leak or corruption on unload, because
the driver had no way of knowing if a handle had been actually
added for this object, and the fbcon object needed to know this
to clean itself up properly.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Dave Airlie <airlied@redhat.com>
Simon Que [Thu, 30 Sep 2010 08:36:39 +0000 (09:36 +0100)]
i915: Added function to initialize VBT settings
Added a function that sets the LVDS values to default settings. This
will be called by intel_init_bios before checking for the VBT (video BIOS
table). The default values are thus loaded regardless of whether a VBT
is found.
The default settings in each parse function have been moved to the new
function. This consolidates all the default settings into one place.
The default dither bit value has been changed from 0 to 1. We can
assume that display devices will want dithering enabled.
Signed-off-by: Simon Que <sque@chromium.org> Acked-by: Olof Johansson <olof@lixom.net>
[ickle: fixup for -next] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
The i810 and i830 device drivers may replace their file operations
on an open file descriptor. My previous patch to move the BKL
out of the common DRM code into these drivers only caught the
default file operations, not the ones that actually end up being
used.
Found while trying to come up with a way to kill the BKL for
good in these drivers.
Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
Chris Wilson [Wed, 29 Sep 2010 11:26:37 +0000 (12:26 +0100)]
drm/i915: Avoid blocking the kworker thread on a stuck mutex
Just reschedule the retire requests again if the device is currently
busy. The request list will be pruned along other paths so will never
grow unbounded and so we can afford to miss the occasional pruning.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Chris Wilson [Fri, 24 Sep 2010 11:52:03 +0000 (12:52 +0100)]
drm/i915/sdvo: Fix GMBUSification
Besides a couple of bugs when writing more than a single byte along the
GMBUS, SDVO was completely failing whilst trying to use GMBUS, so use
bit banging instead.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
projects / mv-sheeva.git / log