... instead of resetting a few things and hoping that this will work
out.
To properly disable the output pipelines at the initial modeset after
resume or boot up we need to have an accurate picture of which outputs
are enabled and connected to which crtcs. Otherwise we risk disabling
things at the wrong time, which can lead to hangs (or at least royally
confused panels), both requiring a walk to the reset button to fix.
Hence read out the hw state with the freshly introduce get_hw_state
functions and then sanitize it afterwards.
For a full modeset readout (which would allow us to avoid the initial
modeset at boot up) a few things are still missing:
- Reading out the mode from the pipe, especially the dotclock
computation is quite some fun.
- Reading out the parameters for the stolen memory framebuffer and
wrapping it up.
- Reading out the pch pll connections - luckily the disable code
simply bails out if the crtc doesn't have a pch pll attached (even
for configurations that would need one).
This patch here turned up tons of smelly stuff around resume: We
restore tons of register in seemingly random way (well, not quite, but
we're not too careful either), which leaves the hw in a rather
ill-defined state: E.g. the port registers are sometimes
unconditionally restore (lvds, crt), leaving us with an active
encoder/connector but no active pipe connected to it. Luckily the hw
state sanitizer detects this madness and fixes things up a bit.
v2: When checking whether an encoder with active connectors has a crtc
wire up to it, check for both the crtc _and_ it's active state.
v3:
- Extract intel_sanitize_encoder.
- Manually disable active encoders without an active pipe.
v4: Correclty fix up the pipe<->plane mapping on machines where we
switch pipes/planes. Noticed by Chris Wilson, who also provided the
fixup.
v5: Spelling fix in a comment, noticed by Paulo Zanoni
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Similar to the sdvo code we poke the dvo encoder whether the output is
active. Safe that dvo encoders are not standardized, so this requires
a new callback into the dvo chip driver.
Hence implement that for all 6 dvo drivers.
v2: With the newly added ns2501 we now have 6 dvo drivers instead of
just 5 ...
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
SDVO is the first real special case - we support multiple outputs on
the same encoder and the encoder dpms state isn't the same as when
just disabling the outputs when the encoder is cloned.
Hence we need a real connector get_hw_state function which inquires
the sdvo encoder about its active outputs.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Note that even though this connector is cloneable we still can use the
exact same test to check whether the connector is on or whether the
encoder is enabled - both the dpms code and the encoder disable/enable
frob the exact same hw state.
For dvo/sdvo outputs, this will be different.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Also add some macros to make the pipe computation a bit easier.
v2: I've mixed up the CPT and !CPT PORT_TO_PIPE macro variants ...
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
It is all glorious if we try really hard to only enable/disable an
entire display pipe to ensure that everyting happens in the right
order. But if we don't know the output configuration when the driver
takes over, this will all be for vain because we'll make the hw angry
right on the first modeset - we don't know what outputs/ports are
enabled and hence have to disable everything in a rather ad-hoc way.
Hence we need to be able to read out the current hw state, so that we
can properly tear down the current hw state on the first modeset.
Obviously this is also a nice preparation for the fastboot work, where
we try to avoid the modeset on driver load if it matches what the hw
is currently using.
Furthermore we'll be using these functions to cross-check the actual
hw state with what we think it should be, to ensure that the modeset
state machine actually works as advertised.
This patch only contains the interface definitions and a little helper
for the simple case where we have a 1:1 encoder to connector mapping.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This is the first tiny step towards cross-checking the entire modeset
state machine with WARNs. A crtc can only be enabled when it's
actually in use, i.e. crtc->active imlies crtc->enabled.
Unfortunately we can't (yet) check this when disabling the crtc,
because the crtc helpers are a bit slopy with updating state and
unconditionally update crtc->enabled before changing the hw state.
Fixing that requires quite some more work.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Instead of going through the crtc helper function tables.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
With the new infrastructure we're doing this when enabling/disabling
the entire display pipe.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
- We don't have the ->get_crtc callback.
- Call intel_encoder->disable directly.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Together with the static helper functions drm_crtc_prepare_encoders
and drm_encoder_disable (which will be simplified in the next patch,
but for now are 1:1 copies). Again, no changes beside new names for
these functions.
Also call our new set_mode instead of the crtc helper one now in all
the places we've done so far.
v2: Call the function just intel_set_mode to better differentia it
from intel_crtc_mode_set which really only does the ->mode_set step of
the entire modeset sequence on one crtc. Whereas this function does
the global change.
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Also kill the error-path, we have a fixed connector->encoder mapping.
Unfortunately we can't rip out all the ->best_encoder callbacks, these
are all still used by the fb_helper. Neat helper layering violation there.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
And the following static functions required by it:
drm_encoder_crtc_ok, drm_crtc_helper_disable
No changes safe for the s/drm/intel prefix change.
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We no longer need them. And now that all encoders are converted, we
can finally move the cpt modeset check to the right place - at the end
of the crtc_enable function.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
All encoders are now converted so there's no need for these checks any
more.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Yeah, big patch but I couldn't come up with a neat idea of how to
split it up further, that wouldn't break dpms on cloned configs
somehow. But the changes in dvo/sdvo/crt are all pretty much
orthonogal, so it's not too bad a patch.
These are the only encoders that support cloning, which requires a few
special changes compared to the previous patches.
- Compute the desired state of the display pipe by walking all
connected encoders and checking whether any has active connectors.
To make this clearer, drop the old mode parameter to the crtc dpms
function and rename it to intel_crtc_update_dpms.
- There's the curious case of intel_crtc->dpms_mode. With the previous
patches to remove the overlay pipe A code and to rework the load
detect pipe code, the big users are gone. We still keep it to avoid
enabling the pipe twice, but we duplicate this logic with
crtc->active, too. Still, leave this for now and just push a fake
dpms mode into it that reflects the state of the display pipe.
Changes in the encoder dpms functions:
- We clamp the dpms state to the supported range right away. This is
escpecially important for the VGA outputs, where only older hw
supports the intermediate states. This (and the crt->adpa_reg patch)
allows us to unify the crt dpms code again between all variants
(gmch, vlv and pch).
- We only enable/disable the output for dvo/sdvo and leave the encoder
running. The encoder will be disabled/enabled when we switch the
state of the entire output pipeline (which will happen right away
for non-cloned setups). This way the duplication is reduced and
strange interaction when disabling output ports at the wrong time
avoided.
The dpms code for all three types of connectors contains a bit of
duplicated logic, but I think keeping these special cases separate is
simpler: CRT is the only one that hanldes intermediate dpms state
(which requires extra logic to enable/disable things in the right
order), and introducing some abstraction just to share the code
between dvo and sdvo smells like overkill. We can do that once someone
bothers to implement cloning for the more modern outputs. But I doubt
that this will ever happen.
v2: s/crtc/crt/_set_dpms, noticed by Paulo Zanoni.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Similar to crt, this doesn't convert the dpms functions.
Also similar to crt, we don't switch of the display pipe
for the intermediate modes, only DPMS_OFF is truely off.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
CRT is the first output which can be cloned, hence we cannot (yet)
move the dpms handling over to disable/enable. This requires some more
smarts in intel_crtc_dpms first to set the display pipe status
depening upon encoder->connectors_active of all connected encoders.
Because that will happen in a separate step, don't touch the dpms
functions, yet.
v2: Be careful about clearing the _DISABLE flags for intermediate dpms
modes - otherwise we might clobber the crt state when another (cloned)
connector gets enabled.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
DP is the first encoder which isn't simple. As
commit d240f20f54
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Fri Aug 13 15:43:26 2010 -0700
drm/i915: make sure eDP PLL is enabled at the right time
discovered, we need to enable the eDP PLL for the cpu port _before_ we
enable the pipes and planes. After a few more commits the current
solution is to enable the PLL in the dp mode_set function (because
this is the only encoder callback the crtc helper code calls before it
calls the crtc's commit function).
Now I suspect that we actually should enable/disable the entire cpu
eDP port before/after planes, but thanks to how the crtc helper code
assumes that you can disable an encoder without disabling it's crtc
right away, this won't work.
The result is that the current prepare/commit hooks don't touch the
eDP PLL, but instead it get's frobbed in dp_mode_set and in the dp
dpms function. Hence we need to keep things (at least for now)
bug-for-bug compatible by using our own special dp dpms function and
keep everything else more-or-less as-is (just using our own
infrastrucutre now).
This mess can only be cleaned up once we control the entire modeset
sequence and can move things around freely.
v2: Squash unsupported dpms modes to OFF at the beginning of the DP
dpms function.
v3: Need to set the dpms state to off in dp_disable, otherwise this
breaks the newly added WARNs ...
v4: Rebased against edp panel off sequence changes in 3.6-rc2
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
With the previous patch LVDS is also a simple case. Treat it
accordingly.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Like hdmi tv outputs are simple: They only have 2 states and can't be
cloned. Hence give it the same treatment.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
I've picked hdmi as the first encoder to convert because it's rather
simple:
- no cloning possible
- no differences between prepare/commit and dpms off/on switching.
A few changes are required to do so:
- Split up the dpms code into an enable/disable function and wire it
up with the intel encoder.
- Noop out the existing encoder prepare/commit functions used by the
crtc helper - our crtc enable/disable code now calls back into the
encoder enable/disable code at the right spot.
- Create new helper functions to handle dpms changes.
- Add intel_encoder->connectors_active to better track dpms state. Atm
this is unused, but it will be useful to correctly disable the
entire display pipe for cloned configurations. Also note that for
now this is only useful in the dpms code - thanks to the crtc
helper's dpms confusion across a modeset operation we can't (yet)
rely on this having a sensible value in all circumstances.
- Rip out the encoder helper dpms callback, if this is still getting
called somewhere we have a bug. The slight issue with that is that
the crtc helper abuses dpms off to disable unused functions. Hence
we also need to implement a default encoder disable function to do
just that with the new encoder->disable callback.
- Note that we drop the cpt modeset verification in the commit
callback, too. The right place to do this would be in the crtc's
enable function, _after_ all the encoders are set up. But because
not all encoders are converted yet, we can't do that. Hence disable
this check temporarily as a minor concession to bisectability.
v2: Squash the dpms mode to only the supported values -
connector->dpms is for internal tracking only, we can hence avoid
needless state-changes a bit whithout causing harm.
v3: Apply bikeshed to disable|enable_ddi, suggested by Paulo Zanoni.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Just prep work, not yet put to some use.
Note that because we're still using the crtc helper to switch modes
(and their complicated way to do partial modesets), we need to call
the encoder's disable function unconditionally.
But once this is cleaned up we shouldn't call the encoder's disable
function unconditionally any more, because then we know that we'll
only call it if the encoder is actually enabled. Also note that we
then need to be careful about which crtc we're filtering the encoder
list on: We want to filter on the crtc of the _current_ mode, not the
one we're about to set up.
For the enabling side we need to do the same trick. And again, we
should be able to simplify this quite a bit when things have settled
into place.
Also note that this simply does not take cloning into account, so dpms
needs to be handled specially for the few outputs where we even bother
with it.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Just impendance matching with the the crtc helper stuff.
... and somehow the design of this all ended up in this commit here,
too ;-)
The big plan is that this new set of crtc display_funcs take full
responsibility of modeset operations for the entire display output
pipeline (by calling down into object-specific callbacks and
functions). The platform-specific callbacks simply know best what the
proper order is.
This has the drawback that we can't do minimal change-overs any more
if a modeset just disables one encoder in a cloned configuration
(because we will only expose a disable/enable action that takes
down/sets up the entire crtc including all encoders). Imo that's the
only sane way to do it though:
- The use-case for this is pretty minimal, even when presenting (at
least sane people) should use a dual-screen output so that you can
see your notes on your panel. Clone mode is imo BS.
- With all the clone mode constrains, shared resources, and special
ordering requirements (which differ even on the same platform
sometimes for different outputs) there's no way we'd get this right
for all cases. Especially since this is a under-used feature.
- And to top it off: On haswell even dp link re-training requires us
to take down the entire display pipe - otherwise the chip dies.
So the only sane way is to do a full modeset on every crtc where the
output config changes in any way.
To support global modeset (i.e. set the configuration for all crtcs at
once) we'd then add one more function to allocate global and shared
objects in the best ways (e.g. fdi links, pch plls, ...). The crtc
functions would then simply use the pre-allocated stuff (and shouldn't
be able to fail, ever). We could even do all the object pinning in
there (and maybe try to defragment the global gtt if we fail)!
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Because that's what we're essentially calling. This is the first step
in untangling the crtc_helper induced dpms handling mess we have - at
the crtc level we only have 2 states and the magic is just in
selecting which one (and atm there isn't even much magic, but on
recent platforms where not even the crt output has more than 2 states
we could do better).
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Added new haswell_write_eld() to initialize Haswell HDMI audio registers
to generate an unsolicited response to the audio controller driver to
indicate that the controller sequence should start.
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Wang Xingchao <xingchao.wang@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We need to call these before we transfer the damaged areas to the device
not before/after we setup the long lived vmaps.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
In order for udl vmap to work properly, we need to push the object
into the CPU domain before we start copying the data to the USB device.
This along with the udl change avoids userspace explicit mapping to
be used.
v2: add a flag for userspace to query to know if Intel kernel driver can
deal with the vmap flushing properly. In theory udl would need a flag also,
but I intend to push the patches very close to each other and other drivers
should do the right thing from the start.
I've added a test to my intel-gpu-tools prime branch, however testing
this is a bit messy since the only way to get udl to vmap is to rendering
something. I've tested this with real code as well to make sure it works.
Signed-off-by: Dave Airlie <airlied@redhat.com>
[danvet: resolved conflict, which required reallocating the PARAM
number to 21.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This is left over from the old PLL sharing code and isn't useful now
that PLLs are shared when possible.
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
New-ish devices have 3 pipes, so let's not just hardcode 2 but use the
for_each_pipe() macro and make struct intel_display_error_state is big
enough.
V2: Also add the number of pipes emitted (Chris Wilson)
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Yet again the too close relationship between the fb helper and the
crtc helper code strikes. This time around the fb helper resets all
encoder->crtc pointers to NULL before starting to set up it's own
mode. Which is total bullocks, because this will clobber the existing
output routing, which the new drm/i915 code depends upon to be
absolutely correct.
The crtc helper itself doesn't really care about that, since it
disables unused encoders in a rather roundabout way anyway.
Two places call drm_setup_crts:
- For the initial fb config. I've auditted all current drivers, and
they all allocate their encoders with kzalloc. So there's no need to
clear encoder->crtc once more.
- When processing hotplug events while showing the fb console. This
one is a bit more tricky, but both the crtc helper code and the new
drm/i915 modeset code disable encoders if their crtc is changed and
that encoder isn't part of the new config. Also, both disable any
disconnected outputs, too.
Which only leaves encoders that are on, connected, but for some odd
reason the fb helper code doesn't want to use. That would be a bug
in the fb configuration selector, since it tries to light up as many
outputs as possible.
v2: Kill the now unused encoders variable.
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Use _PIPE macro to get correct register definition for IBX/CPT, discard
old variable "i" way.
Signed-off-by: Wang Xingchao <xingchao.wang@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
[danvet: Added the DIP_PORT_SEL #define from a preceeding patch in the
series that needs more work.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
HDMI audio related registers will be configured in write_eld callback.
Signed-off-by: Wang Xingchao <xingchao.wang@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Simply to make the ilk+ crtc disable path clearer and more symmetric
with the enable function.
Also switch to intel_crtc for the enable function.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
... and move a few others only used by i915_dma.c into the dri1
dungeon.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
All dvo drivers only support 2 dpms states, and our dvo driver
even switches of the dvo port for anything else than DPMS_ON. Hence
ditch this complexity and simply use bool enable.
While reading through this code I've noticed that the mode_set
function of ch7017 is a bit peculiar - it disable the lvds again, even
though the crtc helper code should have done that ... This might be to
work around an issue at driver load, we pretty much ignore the hw
state when taking over.
v2: Also do the conversion for the new ns2501 driver.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Since it's redundant - we can get the attached encoder in the
functions themselves.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
A few things need adjustement:
- Change the dpms state by calling the dpms connector function and
not some crtc helper internal callbacks. Otherwise this will break
once we switch to our own dpms handling.
- Instead of tracking and restoring intel_crtc->dpms_mode use the
connector's dpms variable - the former relies on the dpms compuation
rules used by the crtc helper. And it would break when the encoder
is cloned and the other output has a different dpms state. But luckily
no one is crazy enough for that.
- Properly clear the connector -> encoder -> crtc linking, even when
failing (note that the crtc helper removes the encoder -> crtc link
in disabled_unused_functions for us).
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Now that all affected i830M systems have the pipe A quirk set,
we don't need to do any special dances in the overlay code any
longer. And reading through the code I'm rather dubios that it
actually does what it claims to do ...
As a nice benefit this rips out a users of the crtc helper dpms
callback.
v2: As suggested by Chris Wilson, replace the code by an appropriate
WARN to ensure that the pipe A is indeed running.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
With the pipe A quirk properly fixed up for i830M, this shouldn't be
required any longer.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
For some odd reason we've missed i830 and a i855 variant. Also
kill the two now redundant i830 entries.
v2: Don't add the missing 855 id to the pipe A quirk list, we seem to
lack justification for it.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Wrong order of parameters passed-in when calling hdmi/adpa
/lvds_pipe_enabled(), 2nd and 3rd parameters are reversed.
This bug was indroduced by
commit 1519b9956e
Author: Keith Packard <keithp@keithp.com>
Date: Sat Aug 6 10:35:34 2011 -0700
drm/i915: Fix PCH port pipe select in CPT disable paths
The reachable tag for this commit is v3.1-rc1-3-g1519b99
Signed-off-by: Anhua Xu <anhua.xu@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Merge tag 'v3.6-rc2' into drm-intel-next
Backmerge Linux 3.6-rc2 to resolve a few funny conflicts before we put
even more madness on top:
- drivers/gpu/drm/i915/i915_irq.c: Just a spurious WARN removed in
-fixes, that has been changed in a variable-rename in -next, too.
- drivers/gpu/drm/i915/intel_ringbuffer.c: -next remove scratch_addr
(since all their users have been extracted in another fucntion),
-fixes added another user for a hw workaroudn.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
* 'drm-nouveau-fixes' of git://git.freedesktop.org/git/nouveau/linux-2.6:
drm/nv86/fifo: suspend fix
drm/nouveau: disable copy engine on NVAF
nouveau: fixup scanout enable in nvc0_pm
drm/nouveau/aux: mask off higher bits of auxch index in i2c table entry
drm/nvd0/disp: mask off high 16 bit of negative cursor x-coordinate
drm/nve0/fifo: add support for the flip completion swmthd
