openwrt/staging/blogic.git
12 years agodrm/i915: panel: invert brightness acer aspire 5734z
Carsten Emde [Thu, 15 Mar 2012 14:56:27 +0000 (15:56 +0100)]
drm/i915: panel: invert brightness acer aspire 5734z

Mark the Acer Aspire 5734Z that this machines requires the module to
invert the panel backlight brightness value after reading from and prior
to writing to the PCI configuration space.

Signed-off-by: Carsten Emde <C.Emde@osadl.org>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: panel: invert brightness via quirk
Carsten Emde [Thu, 15 Mar 2012 14:56:26 +0000 (15:56 +0100)]
drm/i915: panel: invert brightness via quirk

A machine may need to invert the panel backlight brightness value. This
patch adds the infrastructure for a quirk to do so.

Signed-off-by: Carsten Emde <C.Emde@osadl.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: panel: invert brightness via parameter
Carsten Emde [Thu, 15 Mar 2012 14:56:25 +0000 (15:56 +0100)]
drm/i915: panel: invert brightness via parameter

Following the documentation of the Legacy Backlight Brightness (LBB)
Register in the configuration space of some Intel PCI graphics adapters,
setting the LBB register with the value 0x0 causes the backlight to be
turned off, and 0xFF causes the backlight to be set to 100% intensity
(http://download.intel.com/embedded/processors/Whitepaper/324567.pdf).
The Acer Aspire 5734Z, however, turns the backlight off at 0xFF and sets
it to maximum intensity at 0. In consequence, the screen of this systems
becomes dark at an early boot stage which makes it unusable. The same
inversion applies to the BLC_PWM_CTL I915 register. This problem was
introduced in kernel version 2.6.38 when the PCI device of this system
was first supported by the i915 KMS module.

This patch adds a parameter to the i915 module to enable inversion of
the brightness variable (i915.invert_brightness).

Signed-off-by: Carsten Emde <C.Emde@osadl.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Add wait_for in init_ring_common
Sean Paul [Fri, 16 Mar 2012 16:43:22 +0000 (12:43 -0400)]
drm/i915: Add wait_for in init_ring_common

I have seen a number of "blt ring initialization failed" messages
where the ctl or start registers are not the correct value. Upon further
inspection, if the code just waited a little bit, it would read the
correct value. Adding the wait_for to these reads should eliminate the
issue.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Don't do MTRR setup if PAT is enabled
Adam Jackson [Wed, 14 Mar 2012 15:22:11 +0000 (11:22 -0400)]
drm/i915: Don't do MTRR setup if PAT is enabled

Some newer BIOSes are shipping with all MTRRs already populated.  These
BIOSes are all on machines with sufficiently new CPUs that the
referenced errata doesn't apply anyway, so just don't try to claim the
MTRR.

Signed-off-by: Adam Jackson <ajax@redhat.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=41648
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Pull MTRR setup to its own function
Adam Jackson [Wed, 14 Mar 2012 15:22:10 +0000 (11:22 -0400)]
drm/i915: Pull MTRR setup to its own function

No functional change here, just clarifying code flow.

Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Retry reading the PCH FDI receiver ISR
Sean Paul [Fri, 2 Mar 2012 17:53:39 +0000 (12:53 -0500)]
drm/i915: Retry reading the PCH FDI receiver ISR

According to the PRM (Vol3P2), the PCH FDI receiver ISR read for bit lock
should be retried at least once. This patch retries the read 5 times
with a small delay in between reads. I've had reports of display corruption
on resume with "FDI train 1 fail!", so I'm hoping that adding this retry
will mitigate the issue.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: remove ACPI related DRM_ERRORs
Jesse Barnes [Thu, 12 Jan 2012 17:03:14 +0000 (09:03 -0800)]
drm/i915: remove ACPI related DRM_ERRORs

They're not really errors (well actually I don't know; I don't
understand _DSM and _MUX well enough to say, but I do know they spam
people's logs and seem to be harmless).

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: The _DSM error got remove in another patch already]
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=44250
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agoi915: Add option to bypass vbt table.
Mathias Fröhlich [Thu, 1 Mar 2012 05:44:35 +0000 (06:44 +0100)]
i915: Add option to bypass vbt table.

This change enables the use of displays where the vbt table just
contains inappropriate values, but either the vesa defaults or
the video=... modes do something sensible with the attached display.

The problem happens with an embedded board that contains vbt bios
tables that do not match the attached display.  Using this change and
the appropriate kernel boot command line they are able to use an
otherwise completely unusable secondary display on that embedded
board.

Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: Mathias Froehlich <Mathias.Froehlich@web.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Only clear the GPU domains upon a successful finish
Chris Wilson [Wed, 14 Dec 2011 12:57:23 +0000 (13:57 +0100)]
drm/i915: Only clear the GPU domains upon a successful finish

By clearing the GPU read domains before waiting upon the buffer, we run
the risk of the wait being interrupted and the domains prematurely
cleared. The next time we attempt to wait upon the buffer (after
userspace handles the signal), we believe that the buffer is idle and so
skip the wait.

There are a number of bugs across all generations which show signs of an
overly haste reuse of active buffers.

Such as:

  https://bugs.freedesktop.org/show_bug.cgi?id=29046
  https://bugs.freedesktop.org/show_bug.cgi?id=35863
  https://bugs.freedesktop.org/show_bug.cgi?id=38952
  https://bugs.freedesktop.org/show_bug.cgi?id=40282
  https://bugs.freedesktop.org/show_bug.cgi?id=41098
  https://bugs.freedesktop.org/show_bug.cgi?id=41102
  https://bugs.freedesktop.org/show_bug.cgi?id=41284
  https://bugs.freedesktop.org/show_bug.cgi?id=42141

A couple of those pre-date i915_gem_object_finish_gpu(), so may be
unrelated (such as a wild write from a userspace command buffer), but
this does look like a convincing cause for most of those bugs.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: reenable gmbus on gen3+ again
Daniel Vetter [Tue, 14 Feb 2012 21:37:25 +0000 (22:37 +0100)]
drm/i915: reenable gmbus on gen3+ again

With the rework to merge the bit-banging fallback into the gmbus
i2c adapter we've gotten rid of the deadlock possibility that
originally lead to the disabling of this code.

This reverts the revert

commit 826c7e4147f902737b281e8a5a7d7aa33fd63316
Author: Jean Delvare <khali@linux-fr.org>
Date:   Sat Jun 4 19:34:56 2011 +0000

    Revert "drm/i915: Enable GMBUS for post-gen2 chipsets"

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=35572
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: i2c: unconditionally set up gpio fallback
Daniel Vetter [Tue, 14 Feb 2012 17:58:49 +0000 (18:58 +0100)]
drm/i915: i2c: unconditionally set up gpio fallback

This way we can simplify the setup and teardown a bit.

Because we don't actually allocate anything anymore for the force_bit
case, we can now convert that into a boolean.

Also and the functionality supported by the bit-banging together with
what gmbus can do, so that this doesn't randomly change any more.

v2: Chris Wilson noticed that I've mixed up && and & ...

v3: Clarify an if block as suggested by Eugeni Dodonov.

Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: merge gmbus and gpio i2c adpater into one
Daniel Vetter [Mon, 27 Feb 2012 23:43:09 +0000 (00:43 +0100)]
drm/i915: merge gmbus and gpio i2c adpater into one

... and directly call the newly exported i2c bit-banging functions.

The code is still pretty convoluted because we only set up the gpio
i2c stuff when actually falling back, resulting in more complexity
than necessary. This will be fixed up in the next patch.

v2: Use exported i2c_bit_algo vtable instead of exported functions.

Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: merge struct intel_gpio into struct intel_gmbus
Daniel Vetter [Tue, 14 Feb 2012 21:37:22 +0000 (22:37 +0100)]
drm/i915: merge struct intel_gpio into struct intel_gmbus

When we set up the gpio fallback, we always have a 1:1 relationship
with an intel_gmbus. Exploit that to store all gpio related data in
there, too. This is a preparation step to merge the tw i2c adapters
controlling the same bus into one.

Just mundane code-munging in this patch.

Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agoi2c: export bit-banging algo functions
Daniel Vetter [Mon, 27 Feb 2012 23:39:39 +0000 (00:39 +0100)]
i2c: export bit-banging algo functions

i915 has a hw i2c controller (gmbus) but for a bunch of stupid reasons
we need to be able to fall back to the bit-banging algo on gpio pins.

The current code sets up a 2nd i2c controller for the same i2c bus using
the bit-banging algo. This has a bunch of issues, the major one being
that userspace can directly access this fallback i2c adaptor behind
the drivers back.

But we need to frob a few registers before and after using fallback
gpio bit-banging, so this horribly fails.

The new plan is to only set up one i2c adaptor and transparently fall
back to bit-banging by directly calling the xfer function of the bit-
banging algo in the i2c core.

To make that possible, export the 2 i2c algo functions.

v2: As suggested by Jean Delvare, simply export the i2c_bit_algo
vtable instead of the individual functions.

Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/nouveau: do a better job at hiding the NIH i2c bit-banging algo
Daniel Vetter [Mon, 27 Feb 2012 23:42:19 +0000 (00:42 +0100)]
drm/nouveau: do a better job at hiding the NIH i2c bit-banging algo

I'd like to export the corresponding functions from the i2c core
so that I can use them in fallback bit-banging in i915.ko

v2: Adapt to new i2c export patch.

Cc: nouveau@lists.freedesktop.org
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: add dev_priv to intel_gmbus
Daniel Vetter [Tue, 14 Feb 2012 21:37:19 +0000 (22:37 +0100)]
drm/i915: add dev_priv to intel_gmbus

This way we can free up the bus->adaptor.algo_data pointer and make it
available for use with the bitbanging fallback algo.

Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Fix single msg gmbus_xfers writes
Benson Leung [Thu, 9 Feb 2012 20:03:17 +0000 (12:03 -0800)]
drm/i915: Fix single msg gmbus_xfers writes

gmbus_xfer with a single message (particularly a single message write) would
set Bus Cycle Select to 100b, the Gen Stop cycle, instead of 101b,
No Index, Stop cycle. This would not start single message i2c transactions.

Also, gmbus_xfer done: will disable the interface without checking if
it is idle. In the case of writes, there will be no wait on status or delay
to ensure the write starts and completes before the interface is turned off.

Fixed the former issue by using the same cycle selection as used in the
I2C_M_RD for the write case.
GMBUS_CYCLE_WAIT | (i + 1 == num ? GMBUS_CYCLE_STOP : 0)
Fixed the latter by waiting on GMBUS_ACTIVE to deassert before disable.

Note from the grumpy d-i-n maintainer: The first hunk that changes the
gmbus read path is just cosmetics to align the code with the write
path.  I.e. the commit message above is slightly lying because the
first issue is _only_ with writes (and not simply "particularly").

Signed-off-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: error_buffer->ring should be signed
Daniel Vetter [Thu, 16 Feb 2012 10:03:29 +0000 (11:03 +0100)]
drm/i915: error_buffer->ring should be signed

gcc seems to get uber-anal recently about these things.

Clarification from Dan Carpenter:

"Sorry, I should have said that it's not a gcc warning, it's a smatch
thing.  But also it's not uber-anal.  It's the exact level of anality
which is required to make the == -1 test work.  You can compare
unsigned int and longs to -1 and it works but for smaller types it
doesn't."

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Silence the error message from i915_wait_request()
Chris Wilson [Wed, 22 Feb 2012 20:39:12 +0000 (20:39 +0000)]
drm/i915: Silence the error message from i915_wait_request()

This error message has since been superseded by the hangcheck, and does
not add any salient information beyond that already printed by hangcheck
discovering the GPU hang that lead to i915_wait_request() bombing out in
the first place.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: use the new hdmi_force_audio enum more
Daniel Vetter [Thu, 23 Feb 2012 16:14:47 +0000 (17:14 +0100)]
drm/i915: use the new hdmi_force_audio enum more

While fixing up a merge conflict with drm-next I've noticed that we
use the same audio drm connector property also for dp and sdvo
outputs.

So put the new enum to some good use and convert these paths, too. The
HDMI_AUDIO_ prefix is a bit a misnomer. But at least for sdvo it makes
sense (and you can also connect a hdmi monitor with a dp->hdmi cable),
so I've decided to stick with it.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: No need to search again after retiring requests
Chris Wilson [Fri, 24 Feb 2012 00:27:22 +0000 (00:27 +0000)]
drm/i915: No need to search again after retiring requests

Retiring requests does not typically free up space in the aperture,
so the additional search is pointless.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Only bump refcnt on objects scheduled for eviction
Chris Wilson [Fri, 24 Feb 2012 00:27:21 +0000 (00:27 +0000)]
drm/i915: Only bump refcnt on objects scheduled for eviction

Incrementing the reference count on all objects walked when searching
for space in the aperture is a non-neglible amount of overhead. In fact,
we only need to hold on to a reference for objects that we will evict,
so we can therefore delay the referencing until we find a suitable hole
and only add those objects that fall inside.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915/bios: Downgrade the "signature missing" DRM_ERROR to debug
Chris Wilson [Fri, 24 Feb 2012 16:53:28 +0000 (16:53 +0000)]
drm/i915/bios: Downgrade the "signature missing" DRM_ERROR to debug

As we warn the user later that we cannot find or load the VBIOS,
explaining why is an exercise in debugging. Shouting *ERROR* upsets
people and produces bug reports.

Reported-by: Michael Rieder <mr@student.ethz.ch>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43751
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Ignore LVDS on hp t5745 and hp st5747 thin client
Marc Gariepy [Thu, 9 Feb 2012 14:35:21 +0000 (09:35 -0500)]
drm/i915: Ignore LVDS on hp t5745 and hp st5747 thin client

Add a no_lvds quirk for the HP t5745 and HP st5747 thin clients

dmidecode for those thin clients are attached in thoses bugs:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/911916
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/911920

Signed-off-by: Marc Gariepy <mgariepy@ubuntu.com>
Acked-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Fixes distorted external screen image on HP 2730p
Philipp Grete [Tue, 21 Feb 2012 11:40:20 +0000 (12:40 +0100)]
drm/i915: Fixes distorted external screen image on HP 2730p

Fixes LP: #796030 by removing forced pipe A on HP 2730p.  Quirk has
previously been introduced to fix a sleep mode problem that does not
exist any more.

v2: Added Tested-by and Bugzilla Link

Bugzilla: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/796030
Tested-by: Ronny Standtke <ronny.standtke@gmx.net>
Signed-off-by: Philipp Grete <mail@pgrete.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agoMerge remote-tracking branch 'airlied/drm-next' into for-airlied
Daniel Vetter [Thu, 23 Feb 2012 13:54:20 +0000 (14:54 +0100)]
Merge remote-tracking branch 'airlied/drm-next' into for-airlied

Manually resolve the conflict between the new enum drm property
helpers in drm-next and the new "force-dvi" option that the "audio" output
property gained in drm-intel-next.

While resolving this conflict, switch the new drm_prop_enum_list to
use the newly introduced enum defines instead of magic values.

Conflicts:
drivers/gpu/drm/i915/intel_modes.c

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm: add some caps for userspace to discover more info for dumb KMS driver (v2)
Dave Airlie [Thu, 29 Sep 2011 15:20:42 +0000 (16:20 +0100)]
drm: add some caps for userspace to discover more info for dumb KMS driver (v2)

For the simple KMS driver case we need some more info about what the preferred
depth and if a shadow framebuffer is preferred.

I've only added this for intel/radeon which support the dumb ioctls so far.

If you need something really fancy you should be writing a real X.org driver.

v2: drop cursor information, just return an error from the cursor ioctls
and we can make userspace fallback to sw cursor in that case, cursor
info was getting too messy, best to start smaller.

Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm: move pci bus master enable into driver.
Dave Airlie [Mon, 19 Dec 2011 11:15:29 +0000 (11:15 +0000)]
drm: move pci bus master enable into driver.

The current enabling of bus mastering in the drm midlayer allows a large
race condition under kexec. When a kexec'ed kernel re-enables bus mastering
for the GPU, previously setup dma blocks may cause writes to random pieces
of memory. On radeon the writeback mechanism can cause these sorts of issues.

This patch doesn't fix the problem, but it moves the bus master enable under
the individual drivers control so they can move enabling it until later in
their load cycle and close the race.

Fix for radeon kms driver will be in a follow-up patch.

Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agoRevert "drivers/gpu/drm/i915/intel_overlay.c needs seq_file.h"
Danny Kukawka [Wed, 15 Feb 2012 17:53:55 +0000 (18:53 +0100)]
Revert "drivers/gpu/drm/i915/intel_overlay.c needs seq_file.h"

This reverts commit e167976ee7f5fe4b80f7e8f55e087f6c67cf9562,
Since this was already fixed in commit
3bd3c9329973a93fa3ef5e9840f2fd6fa2889e3f some days before this
commit cause seq_file.h to be included twice.

Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/radeon/evergreen: make texdw[] array larger
Dan Carpenter [Tue, 14 Feb 2012 07:38:11 +0000 (10:38 +0300)]
drm/radeon/evergreen: make texdw[] array larger

We store stuff in texdw[7] so this array needs to have 8 elements.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm/i915/lvds: Always use the presence pin for LVDS on PCH
Chris Wilson [Thu, 9 Feb 2012 09:35:53 +0000 (09:35 +0000)]
drm/i915/lvds: Always use the presence pin for LVDS on PCH

With the introduction of the PCH, we gained an LVDS presence pin but we
continued to use the existing logic that asserted that LVDS was only
supported on certain mobile chipsets. However, there are desktop
IronLake systems with LVDS attached which we fail to detect. So for PCH,
trust the LVDS presence pin and quirk all the lying manufacturers.

Tested-by: Daniel Woff <wolff.daniel@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43171
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Record the position of the request upon error
Chris Wilson [Wed, 15 Feb 2012 11:25:38 +0000 (11:25 +0000)]
drm/i915: Record the position of the request upon error

So that we can tally the request against the command sequence in the
ringbuffer, or merely jump to the interesting locations.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Record the in-flight requests at the time of a hang
Chris Wilson [Wed, 15 Feb 2012 11:25:37 +0000 (11:25 +0000)]
drm/i915: Record the in-flight requests at the time of a hang

Being able to tally the list of outstanding requests with the sequence
of commands in the ringbuffer is often useful evidence with respect to
driver corruption.

Note that since this is the umpteenth per-ring data structure to be added
to the error state, I've coallesced the nearby loops (the ringbuffer and
batchbuffer) into a single structure along with the list of requests.  A
later task would be to refactor the ring register state into the same
structure.

v2: Fix pretty printing of requests so that they are parsed correctly by
intel_error_decode and use the 0x%08x format for seqno for consistency

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Record the tail at each request and use it to estimate the head
Chris Wilson [Wed, 15 Feb 2012 11:25:36 +0000 (11:25 +0000)]
drm/i915: Record the tail at each request and use it to estimate the head

By recording the location of every request in the ringbuffer, we know
that in order to retire the request the GPU must have finished reading
it and so the GPU head is now beyond the tail of the request. We can
therefore provide a conservative estimate of where the GPU is reading
from in order to avoid having to read back the ring buffer registers
when polling for space upon starting a new write into the ringbuffer.

A secondary effect is that this allows us to convert
intel_ring_buffer_wait() to use i915_wait_request() and so consolidate
upon the single function to handle the complicated task of waiting upon
the GPU. A necessary precaution is that we need to make that wait
uninterruptible to match the existing conditions as all the callers of
intel_ring_begin() have not been audited to handle ERESTARTSYS
correctly.

By using a conservative estimate for the head, and always processing all
outstanding requests first, we prevent a race condition between using
the estimate and direct reads of I915_RING_HEAD which could result in
the value of the head going backwards, and the tail overflowing once
again. We are also careful to mark any request that we skip over in
order to free space in ring as consumed which provides a
self-consistency check.

Given sufficient abuse, such as a set of unthrottled GPU bound
cairo-traces, avoiding the use of I915_RING_HEAD gives a 10-20% boost on
Sandy Bridge (i5-2520m):
  firefox-paintball  18927ms -> 15646ms: 1.21x speedup
  firefox-fishtank   12563ms -> 11278ms: 1.11x speedup
which is a mild consolation for the performance those traces achieved from
exploiting the buggy autoreported head.

v2: Add a few more comments and make request->tail a conservative
estimate as suggested by Daniel Vetter.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: resolve conflicts with retirement defering and the lack of
the autoreport head removal (that will go in through -fixes).]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: add missing SDVO bits for interlaced modes on ILK
Paulo Zanoni [Tue, 14 Feb 2012 19:07:09 +0000 (17:07 -0200)]
drm/i915: add missing SDVO bits for interlaced modes on ILK

This was pointed by Jesse Barnes. The code now seems to follow the
specification but I don't have an SDVO device to really test this.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agoMerge tag 'drm-intel-next-2012-02-07' of git://people.freedesktop.org/~danvet/drm...
Dave Airlie [Tue, 14 Feb 2012 14:16:00 +0000 (14:16 +0000)]
Merge tag 'drm-intel-next-2012-02-07' of git://people.freedesktop.org/~danvet/drm-intel into drm-core-next

* tag 'drm-intel-next-2012-02-07' of git://people.freedesktop.org/~danvet/drm-intel: (29 commits)
  drm/i915: Handle unmappable buffers during error state capture
  drm/i915: rewrite shmem_pread_slow to use copy_to_user
  drm/i915: rewrite shmem_pwrite_slow to use copy_from_user
  drm/i915: fall through pwrite_gtt_slow to the shmem slow path
  drm/i915: add debugfs file for swizzling information
  drm/i915: fix swizzle detection for gen3
  drm/i915: Remove the upper limit on the bo size for mapping into the CPU domain
  drm/i915: add per-ring fault reg to error_state
  drm/i915: reject GTT domain in relocations
  drm/i915: remove the i915_batchbuffer_info debugfs file
  drm/i915: capture error_state also for stuck rings
  drm/i915: refactor debugfs create functions
  drm/i915: refactor debugfs open function
  drm/i915: don't trash the gtt when running out of fences
  drm/i915: Separate fence pin counting from normal bind pin counting
  drm/i915/ringbuffer: kill snb blt workaround
  drm/i915: collect more per ring error state
  drm/i915: refactor ring error state capture to use arrays
  drm/i915: switch ring->id to be a real id
  drm/i915: set AUD_CONFIG N_value_index for DisplayPort
  ...

12 years agodrm/i915: Fix race condition in accessing GMBUS
Yufeng Shen [Mon, 13 Feb 2012 22:36:54 +0000 (17:36 -0500)]
drm/i915: Fix race condition in accessing GMBUS

GMBUS has several ports and each has it's own corresponding
I2C adpater. When multiple I2C adapters call gmbus_xfer() at
the same time there is a race condition in using the underlying
GMBUS controller. Fixing this by adding a mutex lock when calling
gmbus_xfer().

v2: Moved gmbus_mutex below intel_gmbus and added comments.
Rebased to drm-intel-next-queued.

Signed-off-by: Yufeng Shen <miletus@chromium.org>
[danvet: Shortened the gmbus_mutex comment a bit and add the patch
revision comment to the commit message.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: add a "force-dvi" HDMI audio mode
Wu Fengguang [Tue, 14 Feb 2012 03:45:36 +0000 (11:45 +0800)]
drm/i915: add a "force-dvi" HDMI audio mode

When HDMI-DVI converter is used, it's not only necessary to turn off
audio, but also to disable HDMI_MODE_SELECT and video infoframe. Since
the DVI mode is mainly tied to audio functionality from end user POV,
add a new "force-dvi" audio mode:

xrandr --output HDMI1 --set audio force-dvi

Note that most users won't need to set this and happily rely on the EDID
based DVI auto detection.

Reported-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: Don't lock panel registers when downclocking
Sean Paul [Mon, 13 Feb 2012 18:14:51 +0000 (13:14 -0500)]
drm/i915: Don't lock panel registers when downclocking

This patch replaces the locking from the downclock routines with an assert
to ensure the registers are indeed unlocked. Without this patch, pre-SNB
devices would lock the registers when downclocking which would cause a
WARNING on suspend/resume with downclocking enabled.

Note: To hit this bug, you need to have lvds downclocking enabled.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/radeon: add support for evergreen/ni tiling informations v11
Jerome Glisse [Fri, 16 Dec 2011 22:03:42 +0000 (17:03 -0500)]
drm/radeon: add support for evergreen/ni tiling informations v11

evergreen and northern island gpu needs more informations for 2D tiling
than previous r6xx/r7xx. Add field to tiling ioctl to allow userspace
to provide those.

The v8 cs checking change to track color view on r6xx/r7xx doesn't
affect old userspace as old userspace always emited 0 for this register.

v2 fix r6xx/r7xx 2D tiling computation
v3 fix r6xx/r7xx height align for untiled surface & add support for
   tile split on evergreen and newer
v4 improve tiling debugging output
v5 fix tile split code for evergreen and newer
v6 set proper tile split for crtc register
v7 fix tile split limit value
v8 add COLOR_VIEW checking to r6xx/r7xx checker, add evergreen cs
   checking, update safe reg for r600, evergreen and cayman.
   Evergreen checking need some work around for stencil alignment
   issues
v9 fix tile split value range, fix compressed texture handling and
   mipmap calculation, allow evergreen check to be silencious in
   front of current broken userspace (depth/stencil alignment issue)
v10 fix eg 3d texture and compressed texture, fix r600 depth array,
    fix r600 color view computation, add support for evergreen stencil
    split
v11 more verbose debugging in some case

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm/radeon/kms: add support for streamout v7
Marek Olšák [Fri, 27 Jan 2012 17:17:59 +0000 (12:17 -0500)]
drm/radeon/kms: add support for streamout v7

v2: agd5f: add strmout CS checking, copy_dw register checking

v3: agd5f: don't use cs_check_reg() for copy_dw checking as it
will incorrectly patch the command stream for certain regs.

v4: agd5f: add warning if safe reg check fails for copy_dw

v5: agd5f: add stricter checking for 6xx/7xx

v6: agd5f: add range checking for copy_dw on eg+,
add sx_surface_sync to safe reg list for 7xx.

v7: agd5f: add stricter checking for eg+

Signed-off-by: Marek Olšák <maraeo@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm: Fix kcalloc parameters swapped
Axel Lin [Fri, 10 Feb 2012 12:04:52 +0000 (20:04 +0800)]
drm: Fix kcalloc parameters swapped

The first parameter should be "number of elements" and the second parameter
should be "element size".

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agoMerge branch 'drm-vmware-next' into drm-core-next
Dave Airlie [Mon, 13 Feb 2012 12:04:11 +0000 (12:04 +0000)]
Merge branch 'drm-vmware-next' into drm-core-next

* drm-vmware-next:
  drm/vmwgfx: Bump driver minor
  vmwgfx: Move function declaration to correct header
  drm/vmwgfx: Treat out-of-range initial width and height as host errors
  vmwgfx: Pick up the initial size from the width and height regs
  vmwgfx: Add page flip support
  vmwgfx: Pipe fence out of screen object dirty functions
  vmwgfx: Make it possible to get fence from execbuf
  vmwgfx: Clean up pending event references to struct drm_file objects on close
  vmwgfx: Rework fence event action

12 years agodrm/vmwgfx: Bump driver minor
Thomas Hellstrom [Thu, 9 Feb 2012 15:56:49 +0000 (16:56 +0100)]
drm/vmwgfx: Bump driver minor

Bump driver minor to signal availability of the page-flip ioctl.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agovmwgfx: Move function declaration to correct header
Thomas Hellstrom [Thu, 9 Feb 2012 15:56:48 +0000 (16:56 +0100)]
vmwgfx: Move function declaration to correct header

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm/vmwgfx: Treat out-of-range initial width and height as host errors
Thomas Hellstrom [Thu, 9 Feb 2012 15:56:47 +0000 (16:56 +0100)]
drm/vmwgfx: Treat out-of-range initial width and height as host errors

And assign the initial width and height to the minimum in that case.
Strange values (-1) from these registers have been reported by users.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agovmwgfx: Pick up the initial size from the width and height regs
Jakob Bornecrantz [Thu, 9 Feb 2012 15:56:46 +0000 (16:56 +0100)]
vmwgfx: Pick up the initial size from the width and height regs

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agovmwgfx: Add page flip support
Jakob Bornecrantz [Thu, 9 Feb 2012 15:56:45 +0000 (16:56 +0100)]
vmwgfx: Add page flip support

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agovmwgfx: Pipe fence out of screen object dirty functions
Jakob Bornecrantz [Thu, 9 Feb 2012 15:56:44 +0000 (16:56 +0100)]
vmwgfx: Pipe fence out of screen object dirty functions

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agovmwgfx: Make it possible to get fence from execbuf
Jakob Bornecrantz [Thu, 9 Feb 2012 15:56:43 +0000 (16:56 +0100)]
vmwgfx: Make it possible to get fence from execbuf

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agovmwgfx: Clean up pending event references to struct drm_file objects on close
Thomas Hellstrom [Thu, 9 Feb 2012 15:56:42 +0000 (16:56 +0100)]
vmwgfx: Clean up pending event references to struct drm_file objects on close

Pending events may have stale pointer references to struct drm_file objects
after a file has been closed, but before the event is supposed to be
attached to the drm file. Remove such events on file close.

Tested with "modetest".

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agovmwgfx: Rework fence event action
Jakob Bornecrantz [Thu, 9 Feb 2012 15:56:41 +0000 (16:56 +0100)]
vmwgfx: Rework fence event action

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm/modes: do not enforce an odd vtotal for interlaced modes
Daniel Vetter [Fri, 27 Jan 2012 21:40:51 +0000 (22:40 +0100)]
drm/modes: do not enforce an odd vtotal for interlaced modes

CEA actually specifies an interlaced mode with even vtotal and
supplies a diagram showing how this is supposed to work.

Note that interlaced modes with an even vtotal seem to be a fairly
recent invention. All modelines lore I could dig up with googling says
that vtotal for interlaced modes _needs_ to be odd. But the even
modelines in CEA are not a spec-bug, there's a figure in CEA-861-E
called "Figure 5 Special Interlaced Video Format Timing (Even Vtotal)"
that explains how it's supposed to work. Furthermore intel Bspec
explicitly mentions that both odd and even interlaced vtotal are
supported (VTOTAL register in the south display engine of PCH split
chips).

Acked-by: Adam Jackson <ajax@redhat.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm/i915: fix up locking inconsistency around gem_do_init
Daniel Vetter [Thu, 26 Jan 2012 10:41:11 +0000 (11:41 +0100)]
drm/i915: fix up locking inconsistency around gem_do_init

The locking in our setup and teardown paths is rather arbitrary, but
generally we try to protect gem stuff with dev->struct_mutex. Further,
the ums/gem ioctl to setup gem _does_ take the look. So fix up this
benign inconsistency.

Notice while reading through code.

v2: Rebased on top of the ppgtt code.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: enable forcewake voodoo also for gen6
Daniel Vetter [Wed, 25 Jan 2012 13:04:00 +0000 (14:04 +0100)]
drm/i915: enable forcewake voodoo also for gen6

We still have reports of missed irqs even on Sandybridge with the
HWSTAM workaround in place. Testing by the bug reporter gets rid of
them with the forcewake voodoo and no HWSTAM writes.

Because I've slightly botched the rebasing I've left out the ACTHD
readback which is also required to get IVB working. Seems to still
work on the tester's machine, so I think we should go with the more
minmal approach on SNB. Especially since I've only found weak evidence
for holding forcewake while waiting for an interrupt to arrive, but
none for the ACTHD readback.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=45181
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=45332
Tested-by: Nicolas Kalkhof nkalkhof()at()web.de
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: fixup seqno allocation logic for lazy_request
Daniel Vetter [Wed, 25 Jan 2012 15:32:49 +0000 (16:32 +0100)]
drm/i915: fixup seqno allocation logic for lazy_request

Currently we reserve seqnos only when we emit the request to the ring
(by bumping dev_priv->next_seqno), but start using it much earlier for
ring->oustanding_lazy_request. When 2 threads compete for the gpu and
run on two different rings (e.g. ddx on blitter vs. compositor)
hilarity ensued, especially when we get constantly interrupted while
reserving buffers.

Breakage seems to have been introduced in

commit 6f392d548658a17600da7faaf8a5df25ee5f01f6
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Sat Aug 7 11:01:22 2010 +0100

    drm/i915: Use a common seqno for all rings.

This patch fixes up the seqno reservation logic by moving it into
i915_gem_next_request_seqno. The ring->add_request functions now
superflously still return the new seqno through a pointer, that will
be refactored in the next patch.

Note that with this change we now unconditionally allocate a seqno,
even when ->add_request might fail because the rings are full and the
gpu died. But this does not open up a new can of worms because we can
already leave behind an outstanding_request_seqno if e.g. the caller
gets interrupted with a signal while stalling for the gpu in the
eviciton paths. And with the bugfix we only ever have one seqno
allocated per ring (and only that ring), so there are no ordering
issues with multiple outstanding seqnos on the same ring.

v2: Keep i915_gem_get_seqno (but move it to i915_gem.c) to make it
clear that we only have one seqno counter for all rings. Suggested by
Chris Wilson.

v3: As suggested by Chris Wilson use i915_gem_next_request_seqno
instead of ring->oustanding_lazy_request to make the follow-up
refactoring more clearly correct. Also improve the commit message
with issues discussed on irc.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=45181
Tested-by: Nicolas Kalkhof nkalkhof()at()web.de
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: outstanding_lazy_request is a u32
Daniel Vetter [Wed, 25 Jan 2012 13:03:57 +0000 (14:03 +0100)]
drm/i915: outstanding_lazy_request is a u32

So don't assign it false, that's just confusing ... No functional
change here.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: check gtfifodbg after possibly failed writes
Ben Widawsky [Thu, 9 Feb 2012 09:15:20 +0000 (10:15 +0100)]
drm/i915: check gtfifodbg after possibly failed writes

If we don't have a sufficient number of free entries in the FIFO, we
proceed to do a write anyway. With this check we should have a clue if
that write actually failed or not.

After some discussion with Daniel Vetter regarding his original
complaint, we agreed upon this.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: catch gtfifo errors on forcewake_put
Ben Widawsky [Thu, 9 Feb 2012 09:15:19 +0000 (10:15 +0100)]
drm/i915: catch gtfifo errors on forcewake_put

This is similar to a patch I wrote several months ago. It's been updated
for the new FORCEWAKE_MT. As recommended by Chris Wilson, use WARN()
instead of DRM_ERROR, so we can get a backtrace.

This shouldn't impact performance too much as the extra register read
can replace the POSTING_READ we had previously.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: use gtfifodbg
Ben Widawsky [Thu, 9 Feb 2012 09:15:18 +0000 (10:15 +0100)]
drm/i915: use gtfifodbg

Add register definitions for GTFIFODBG, and clear it during init time to
make sure state is correct.

This register tells us if either a read, or a write occurred while the
fifo was full. It seems like bit 2 is an OR of bit 0 and bit 1, so we
check that as well, but the documents are not quite clear.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by (v1): Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: set interlaced bits for TRANSCONF
Paulo Zanoni [Fri, 3 Feb 2012 19:47:15 +0000 (17:47 -0200)]
drm/i915: set interlaced bits for TRANSCONF

I'm not sure why they are needed (I didn't notice any difference in my
tests), but these bits are in our documentation and they are also set by
the Windows driver.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: fixup overlay checks for interlaced modes
Daniel Vetter [Sat, 28 Jan 2012 22:48:46 +0000 (23:48 +0100)]
drm/i915: fixup overlay checks for interlaced modes

The drm core _really_ likes to frob around with the crtc timings and
put halfed vertical timings (in fields) in there. Which confuses the
overlay code, resulting in it's refusal to display anything at the
lower half of an interlaced pipe.

Tested-by: Christopher Egert <cme3000@gmail.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: allow interlaced mode output on the HDMI connector
Peter Ross [Sat, 28 Jan 2012 13:49:26 +0000 (14:49 +0100)]
drm/i915: allow interlaced mode output on the HDMI connector

Signed-off-by: Peter Ross <pross@xvid.org>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Christopher Egert <cme3000@gmail.com>
Tested-by: Alfonso Fiore <alfonso.fiore@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: allow interlaced mode output on the SDVO connector
Peter Ross [Sat, 28 Jan 2012 13:49:25 +0000 (14:49 +0100)]
drm/i915: allow interlaced mode output on the SDVO connector

Signed-off-by: Peter Ross <pross@xvid.org>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Christopher Egert <cme3000@gmail.com>
Tested-by: Alfonso Fiore <alfonso.fiore@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: correctly program the VSYNCSHIFT register
Daniel Vetter [Sat, 28 Jan 2012 13:49:24 +0000 (14:49 +0100)]
drm/i915: correctly program the VSYNCSHIFT register

The hw seems to use this to correctly insert the required delay
before/after an even/odd interlaced field. This might also explain
why we need to substract 1 half-line from vtotal - if the hw just
adds the delay programmend in VSYNCSHIFT the total frame time would be
about that too long.

These registers seems to only exist on gen4 and later. For paranoia
also program it to 0 for progressive modes, but according to
documentation the hw should just ignore it in this case.

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Alfonso Fiore <alfonso.fiore@gmail.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: don't allow interlaced pipeconf on gen2
Daniel Vetter [Sat, 28 Jan 2012 13:49:23 +0000 (14:49 +0100)]
drm/i915: don't allow interlaced pipeconf on gen2

gen2 doesn't support it, so be a bit more paranoid and add a check to
ensure that we never ever set an unsupported interlaced bit.

Ensure that userspace can't set an interlaced mode by resetting
interlace_allowed for the crt on gen2. dvo and lvds are the only other
encoders that gen2 supports and these already disallow interlaced
modes.

Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: fixup interlaced support on ilk+
Daniel Vetter [Sat, 28 Jan 2012 13:49:22 +0000 (14:49 +0100)]
drm/i915: fixup interlaced support on ilk+

According to Paulo Zanoni, this is what windows does.

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Alfonso Fiore <alfonso.fiore@gmail.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: fixup interlaced vertical timings confusion, part 2
Daniel Vetter [Sat, 28 Jan 2012 13:49:21 +0000 (14:49 +0100)]
drm/i915: fixup interlaced vertical timings confusion, part 2

According to bspec, we need to subtract an additional line from vtotal
for interlaced modes and vblank_end needs to equal vtotal. All other
timing fields do not need this special treatment, so kill it.

Bspec says that this is irrespective of whether the interlaced mode
has an odd or even vtotal, both modes are supported.

Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Christopher Egert <cme3000@gmail.com>
Tested-by: Alfonso Fiore <alfonso.fiore@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: fixup interlaced vertical timings confusion, part 1
Daniel Vetter [Sat, 28 Jan 2012 13:49:20 +0000 (14:49 +0100)]
drm/i915: fixup interlaced vertical timings confusion, part 1

We have a pretty decent confusion about vertical timings of interlaced
modes. Peter Ross has written a patch that makes interlace modes work
on a lot more platforms/output combinations by doubling the vertical
timings.

The issue with that patch is that core drm _does_ support specifying
whether we want these vertical timings in fields or frames, we just
haven't managed to consistently use this facility. The relavant
function is drm_mode_set_crtcinfo, which fills in the crtc timing
information.

The first thing to note is that the drm core keeps interlaced modes in
frames, but displays modelines in fields. So when the crtc modeset
helper copies over the mode into adjusted_mode it will already contain
vertical timings in half-frames. The result is that the fixup code in
intel_crtc_mode_fixup doesn't actually do anything (in most cases at
least).

Now gen3+ natively supports interlaced modes and wants the vertical
timings in frames. Which is what sdvo already fixes up, at least under
some conditions.

There are a few other place that demand vertical timings in fields
but never actually deal with interlaced modes, so use frame timings
for consistency, too. These are:
- lvds panel,
- dvo encoders - dvo is the only way gen2 could support interlaced
  mode, but currently we don't support any encoders that do.
- tv out - despite that the tv dac sends out an interlaced signal it
  expects a progressive mode pipe configuration.
All these encoders enforce progressive modes by resetting
interlace_allowed.

Hence we always want crtc vertical timings in frames. Enforce this in
our crtc mode_fixup function and rip out any redudant timing
computations from the encoders' mode_fixup function.

v2-4: Adjust the vertical timings a bit.

v5: Split out the 'subtract-one for interlaced' fixes.

v6: Clarify issues around tv-out and gen2.

Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Christopher Egert <cme3000@gmail.com>
Tested-by: Alfonso Fiore <alfonso.fiore@gmail.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: clean up interlaced pipeconf bit definitions
Daniel Vetter [Sat, 28 Jan 2012 13:49:19 +0000 (14:49 +0100)]
drm/i915: clean up interlaced pipeconf bit definitions

- Clarify which bits are for which chips.
- Note that gen2 can't do interlaced directly (only via dvo tv chips).
- Move the mask to the top to make it clearer how wide this field is.
- Add defintions for all possible values.

This patch doesn't change any code.

v2: Paulo Zanoni pointed out that the pixel doubling modes do no
longer exist on ivb.

Cc: Peter Ross <pross@xvid.org>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Christopher Egert <cme3000@gmail.com>
Tested-by: Alfonso Fiore <alfonso.fiore@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agoMerge remote-tracking branch 'airlied/drm-fixes' into drm-intel-next-queued
Daniel Vetter [Fri, 10 Feb 2012 15:52:55 +0000 (16:52 +0100)]
Merge remote-tracking branch 'airlied/drm-fixes' into drm-intel-next-queued

Back-merge from drm-fixes into drm-intel-next to sort out two things:

- interlaced support: -fixes contains a bugfix to correctly clear
  interlaced configuration bits in case the bios sets up an interlaced
  mode and we want to set up the progressive mode (current kernels
  don't support interlaced). The actual feature work to support
  interlaced depends upon (and conflicts with) this bugfix.

- forcewake voodoo to workaround missed IRQ issues: -fixes only enabled
  this for ivybridge, but some recent bug reports indicate that we
  need this on Sandybridge, too. But in a slightly different flavour
  and with other fixes and reworks on top. Additionally there are some
  forcewake cleanup patches heading to -next that would conflict with
  currrent -fixes.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agoMerge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keith...
Dave Airlie [Fri, 10 Feb 2012 08:35:19 +0000 (08:35 +0000)]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/keithp/linux into drm-fixes

* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keithp/linux:
  drm/i915: fixup interlaced bits clearing in PIPECONF on PCH_SPLIT (v2)
  drm/i915: no lvds quirk for AOpen MP45
  drm/i915: Force explicit bpp selection for intel_dp_link_required
  drm/i915: fixup interlaced bits clearing in PIPECONF on PCH_SPLIT
  drm/i915:: Disable FBC on SandyBridge

12 years agodrm/i915: enable ppgtt
Daniel Vetter [Thu, 9 Feb 2012 19:53:27 +0000 (20:53 +0100)]
drm/i915: enable ppgtt

We want to unconditionally enable ppgtt for two reasons:
- Windows uses this on snb and later.
- We need the basic hw support to work before we can think about real
  per-process address spaces and other cool features we want.

But Chris Wilson was complaining all over irc and intel-gfx that this
will blow up if we don't have a module option to disable it. Hence add
one, to prevent this.

ppgtt support seems to slightly change the timings and make crashy
things slightly more or less crashy. Now in my testing and the testing
this got on troublesome snb machines, it seems to have improved things
only. But on ivb it makes quite a few crashes happen much more often,
see

https://bugs.freedesktop.org/show_bug.cgi?id=41353

Luckily Eugeni Dodonov seems to have a set of workarounds that fix
this issue.

v2: Don't try to enable ppgtt on pre-snb.

v3: Pimp commit message and make Chris Wilson less grumpy by adding a
module option.

v4: New try at making Chris Wilson happy.

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: ppgtt debugfs info
Daniel Vetter [Thu, 9 Feb 2012 16:15:49 +0000 (17:15 +0100)]
drm/i915: ppgtt debugfs info

This was pretty usefull for debugging, might be useful for diagnosing
issues.

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: ppgtt register definitions
Daniel Vetter [Thu, 9 Feb 2012 16:15:48 +0000 (17:15 +0100)]
drm/i915: ppgtt register definitions

Split out for easier cross-checking of the boring pieces with bspec.

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: ppgtt binding/unbinding support
Daniel Vetter [Thu, 9 Feb 2012 16:15:47 +0000 (17:15 +0100)]
drm/i915: ppgtt binding/unbinding support

This adds support to bind/unbind objects and wires it up. Objects are
only put into the ppgtt when necessary, i.e. at execbuf time.

Objects are still unconditionally put into the global gtt.

v2: Kill the quick hack and explicitly pass cache_level to ppgtt_bind
like for the global gtt function. Noticed by Chris Wilson.

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: initialization/teardown for the aliasing ppgtt
Daniel Vetter [Thu, 9 Feb 2012 16:15:46 +0000 (17:15 +0100)]
drm/i915: initialization/teardown for the aliasing ppgtt

This just adds the setup and teardown code for the ppgtt PDE and the
last-level pagetables, which are fixed for the entire lifetime, at
least for the moment.

v2: Kill the stray debug printk noted by and improve the pte
definitions as suggested by Chris Wilson.

v3: Clean up the aperture stealing code as noted by Ben Widawsky.

v4: Paint the init code in a more pleasing colour as suggest by Chris
Wilson.

v5: Explain the magic numbers noticed by Ben Widawsky.

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agoagp/intel-gtt: export the gtt pagetable iomapping
Daniel Vetter [Thu, 9 Feb 2012 16:15:45 +0000 (17:15 +0100)]
agp/intel-gtt: export the gtt pagetable iomapping

We need this because ppgtt page directory entries need to be in the
global gtt pagetable.

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agoagp/intel-gtt: export the scratch page dma address
Daniel Vetter [Thu, 9 Feb 2012 16:15:44 +0000 (17:15 +0100)]
agp/intel-gtt: export the scratch page dma address

To implement a PPGTT for drm/i915 that fully aliases the GTT, we also
need to properly alias the scratch page.

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: dump even more into the error_state
Daniel Vetter [Wed, 1 Feb 2012 21:26:45 +0000 (22:26 +0100)]
drm/i915: dump even more into the error_state

Chris Wilson and me have again stared at funny error states and it's
been pretty clear from the start that something was seriously amiss.
The seqnos last seen by the cpu were a few hundred behind those that
the gpu could have possibly emitted last before it died ...

Chris now tracked it down (hopefully, definit verdict's still out),
but in hindsight we'd have found the bug by simply dumping the cpu
side tracking of the ring head and tail registers.

Fix this and prevent an identical time-waster in the future.

Because the hangs always involved semaphores in one way or another,
we've tried to dump the mbox registers, but couldn't find any
inconsistencies. Still, dump them too.

Reviewed-and-wanted-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm: do not set fb_info->pixmap fields
Sascha Hauer [Mon, 6 Feb 2012 09:58:19 +0000 (10:58 +0100)]
drm: do not set fb_info->pixmap fields

The drm drivers set the fb_info->pixmap fields without setting
fb_info->pixmap.addr. If this is not set the fb core will overwrite
these all fb_info->pixmap fields anyway, so there is not much point
in setting them in the first place.

[airlied: dropped nvidiafb piece - not mine]

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm: add convenience function to create an range property
Sascha Hauer [Mon, 6 Feb 2012 09:58:18 +0000 (10:58 +0100)]
drm: add convenience function to create an range property

Creating a range property is a common pattern, so create
a convenience function for this and use it where appropriate.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm: add convenience function to create an enum property
Sascha Hauer [Mon, 6 Feb 2012 09:58:17 +0000 (10:58 +0100)]
drm: add convenience function to create an enum property

Creating an enum property is a common pattern, so create
a convenience function for this and use it where appropriate.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm/i915: s/DRM_ERROR/DRM_DEBUG in i915_gem_execbuffer.c
Daniel Vetter [Tue, 31 Jan 2012 20:08:14 +0000 (21:08 +0100)]
drm/i915: s/DRM_ERROR/DRM_DEBUG in i915_gem_execbuffer.c

These are all user-trigerable, so tune down their loudness a notch.
For some of these we have i-g-t tests (because they prevent
newly-discovered bugs), without this patches running the test suite
leaves behind a dirty dmesg.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: add gen6+ registers to i915_swizzle_info
Daniel Vetter [Tue, 31 Jan 2012 15:47:56 +0000 (16:47 +0100)]
drm/i915: add gen6+ registers to i915_swizzle_info

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: consolidate swizzling control bit frobbing
Daniel Vetter [Tue, 31 Jan 2012 15:47:55 +0000 (16:47 +0100)]
drm/i915: consolidate swizzling control bit frobbing

On gen5 we also need to correctly set up swizzling in the display
scanout engine, but only there. Consolidate this into the same
function.

This has a small effect on ums setups - the kernel now also sets this
bit in addition to userspace setting it. Given that this code only
runs when userspace either can't (resume, gpu reset) or explicitly
won't(gem_init) touch the hw this shouldn't have an adverse effect.

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: swizzling support for snb/ivb
Daniel Vetter [Thu, 2 Feb 2012 08:58:12 +0000 (09:58 +0100)]
drm/i915: swizzling support for snb/ivb

We have to do this manually. Somebody had a Great Idea.

I've measured speed-ups just a few percent above the noise level
(below 5% for the best case), but no slowdows. Chris Wilson measured
quite a bit more (10-20% above the usual snb variance) on a more
recent and better tuned version of sna, but also recorded a few
slow-downs on benchmarks know for uglier amounts of snb-induced
variance.

v2: Incorporate Ben Widawsky's preliminary review comments and
elaborate a bit about the performance impact in the changelog.

v3: Add a comment as to why we don't need to check the 3rd memory
channel.

v4: Fixup whitespace.

Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agodrm/i915: fixup interlaced bits clearing in PIPECONF on PCH_SPLIT (v2)
Keith Packard [Wed, 8 Feb 2012 21:53:38 +0000 (13:53 -0800)]
drm/i915: fixup interlaced bits clearing in PIPECONF on PCH_SPLIT (v2)

An identical patch has been merged for i9xx_crtc_mode_set:

Commit 59df7b1771c150163e522f33c638096ab0efbf42
Author: Christian Schmidt <schmidt@digadd.de>
Date:   Mon Dec 19 20:03:33 2011 +0100

    drm/intel: Fix initialization if startup happens in interlaced mode [v2]

But that one neglected to fix up the ironlake+ path.

This should fix the issue reported by Alfonso Fiore where booting with
only a HDMI cable connected to his TV failed to display anything. The
issue is that the bios set up things for 1080i and used the pannel
fitter to scale up the lower progressive resolutions. We failed to
clear the interlace bit in the PIPEACONF register, resulting in havoc.

v2: Be more paranoid and just unconditionally clear the field before
setting new values.

Cc: Peter Ross <pross@xvid.org>
Cc: Alfonso Fiore <alfonso.fiore@gmail.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Keith Packard <keithp@keithp.com>
12 years agodrm/i915: no lvds quirk for AOpen MP45
Daniel Vetter [Wed, 8 Feb 2012 15:42:52 +0000 (16:42 +0100)]
drm/i915: no lvds quirk for AOpen MP45

According to a bug report, it doesn't have one.

Cc: stable@kernel.org
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=44263
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Keith Packard <keithp@keithp.com>
12 years agoMerge branch 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel into...
Dave Airlie [Tue, 7 Feb 2012 15:29:04 +0000 (15:29 +0000)]
Merge branch 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel into drm-core-next

* 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel:
  drm/i915: add a LLC feature flag in device description
  drm/i915: kill i915_mem.c
  drm/i915: Use kcalloc instead of kzalloc to allocate array
  drm/i915/dp: Check for AUXCH error before checking for success
  drm/i915/dp: Use auxch precharge value of 5 everywhere
  drm/i915/dp: Tweak auxch clock divider for PCH
  drm/i915: Remove a comment about PCH from the non-PCH path
  drm/i915: Fix assert_pch_hdmi_disabled to mention HDMI (not DP)
  drm/i915: Implement plane-disabled assertion for PCH too
  drivers: i915: Fix BLC PWM register setup
  drm/i915: Check that plane/pipe is disabled before removing the fb
  drm/i915: fix typo in function name
  drm/i915: split out pll divider code
  drm/i915: split 9xx refclk & sdvo tv code out
  agp/intel: Add pci id for hostbridge from has/qemu
  drm/i915: there is no pipe CxSR on ironlake
  drm/i915: Only look for matching clocks for LVDS downclock
  drm/i915: Silence _DSM errors

12 years agodrm/i915: Force explicit bpp selection for intel_dp_link_required
Keith Packard [Wed, 25 Jan 2012 16:16:25 +0000 (08:16 -0800)]
drm/i915: Force explicit bpp selection for intel_dp_link_required

It is never correct to use intel_crtc->bpp in intel_dp_link_required,
so instead pass an explicit bpp in to this function. This patch
only supports 18bpp and 24bpp modes, which means that 10bpc modes will
be computed incorrectly. Fixing that will require more extensive
changes, and so must be addressed separately from this bugfix.

intel_dp_link_required is called from intel_dp_mode_valid and
intel_dp_mode_fixup.

* intel_dp_mode_valid is called to list supported modes; in this case,
  the current crtc values cannot be relevant as the modes in question
  may never be selected. Thus, using intel_crtc->bpp is never right.

* intel_dp_mode_fixup is called during mode setting, but it is run
  well before ironlake_crtc_mode_set is called to set intel_crtc->bpp,
  so using intel_crtc-bpp in this path can only ever get a stale
  value.

Cc: Lubos Kolouch <lubos.kolouch@gmail.com>
Cc: Adam Jackson <ajax@redhat.com>
Cc: stable@vger.kernel.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=42263
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=44881
Tested-by: Dave Airlie <airlied@redhat.com>
Tested-by: camalot@picnicpark.org (Dell Latitude 6510)
Tested-by: Roland Dreier <roland@digitalvampire.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
12 years agodrm/radeon: do not continue after error from r600_ib_test
Matthijs Kooijman [Thu, 2 Feb 2012 20:23:11 +0000 (21:23 +0100)]
drm/radeon: do not continue after error from r600_ib_test

This return statement got dropped while fixing the conflicts introduced
in 7a7e8734ac3.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm exynos: use drm_fb_helper_set_par directly
Sascha Hauer [Wed, 1 Feb 2012 10:38:37 +0000 (11:38 +0100)]
drm exynos: use drm_fb_helper_set_par directly

info->fix.visual already is correctly set from drm_fb_helper_fill_fix.
info->fix.line_length is also set from drm_fb_helper_fill_fix,
so drm_fb_helper_set_par directly instead of a custom
exynos_drm_fbdev_set_par.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm crtc_helper: use list_for_each_entry
Sascha Hauer [Wed, 1 Feb 2012 10:38:30 +0000 (11:38 +0100)]
drm crtc_helper: use list_for_each_entry

list_for_each_entry_safe is for walking a list safe against removal
of entries. Here, no entries are removed, so use list_for_each_entry.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm crtc: Fix locking comments
Sascha Hauer [Wed, 1 Feb 2012 10:38:31 +0000 (11:38 +0100)]
drm crtc: Fix locking comments

Several comments above functions say that the caller must hold the
mode_config lock, but the functions take the lock themselves. Fix
the comments.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm fb helper: remove unused variable crtc_id
Sascha Hauer [Wed, 1 Feb 2012 10:38:26 +0000 (11:38 +0100)]
drm fb helper: remove unused variable crtc_id

crtc_id is set but never used, so remove it from struct
drm_fb_helper_crtc.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm fb helper: remove unused variable conn_limit
Sascha Hauer [Wed, 1 Feb 2012 10:38:25 +0000 (11:38 +0100)]
drm fb helper: remove unused variable conn_limit

conn_limit is set but never used. Remove it from struct
drm_fb_helper.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm fb helper: use drm_helper_connector_dpms to do dpms
Sascha Hauer [Wed, 1 Feb 2012 10:38:24 +0000 (11:38 +0100)]
drm fb helper: use drm_helper_connector_dpms to do dpms

drm_fb_helper_on|off currently manually searches for encoders
to turn on/off. Make this simpler by using the helper function.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm: add proper return value for drm_mode_crtc_set_gamma_size
Sascha Hauer [Wed, 1 Feb 2012 10:38:23 +0000 (11:38 +0100)]
drm: add proper return value for drm_mode_crtc_set_gamma_size

drm_mode_crtc_set_gamma_size returns boolean true for success
and false for failure. This is not very kernel conform, so
change it to return 0 for success and a propert error code
otherwise. Noone checks the return value, so no users have to
be fixed.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>