Commit graph

3285 commits

Author SHA1 Message Date
Dave Airlie
5b9adbd30d Merge branch 'drm-next-3.16' of git://people.freedesktop.org/~agd5f/linux into drm-next
Some additional patches for radeon for 3.16 now that -fixes has been merged.

- Gart fix for all asics r6xx+
- Add some VM tuning parameters
- misc fixes

* 'drm-next-3.16' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: Move fb update from radeon_flip_work_func to radeon_crtc_page_flip
  drm/radeon/dpm: powertune updates for SI
  Revert "drm/radeon: use variable UVD clocks"
  drm/radeon: add query for number of active CUs
  drm/radeon: add debugfs file to trigger GPU reset
  drm/radeon: make vm_block_size a module parameter
  drm/radeon: make VM size a module parameter (v2)
  drm/radeon: rename alt_domain to allowed_domains
  drm/radeon: use the SDMA on for buffer moves on CIK again
  drm/radeon: remove range check from *_gart_set_page
  drm/radeon: stop poisoning the GART TLB
  drm/radeon: hdmi deep color modes must obey clock limit of sink.
  drm/edid: Store all supported hdmi deep color modes in drm_display_info
  drm/radeon: add missing vce init case for hawaii
  drm/radeon: use lower_32_bits where appropriate
2014-06-10 13:09:01 +10:00
Michel Dänzer
685d54b330 drm/radeon: Move fb update from radeon_flip_work_func to radeon_crtc_page_flip
Fixes WARN()s from the DRM core since the page flip rework.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=77521
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09 22:09:12 -04:00
Alex Deucher
8a309113d5 drm/radeon/dpm: powertune updates for SI
Updated powertune settings for certain SI asics.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09 22:06:57 -04:00
Alex Deucher
0690a229c6 Revert "drm/radeon: use variable UVD clocks"
This caused reduced performance for some users with advanced post
processing enabled.  We need a better method to pick the
UVD state based on the amount of post processing required or tune
the advanced post processing to fit within the lower power state
envelope.

This reverts commit 14a9579ddb.
Cc: "3.15" <stable@vger.kernel.org>
2014-06-09 22:06:56 -04:00
Alex Deucher
65fcf668ee drm/radeon: add query for number of active CUs
Query to find out how many compute units on a GPU.
Useful for OpenCL usermode drivers.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09 22:06:55 -04:00
Christian König
478b6e7272 drm/radeon: add debugfs file to trigger GPU reset
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09 22:06:55 -04:00
Christian König
4510fb985d drm/radeon: make vm_block_size a module parameter
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09 22:06:54 -04:00
Christian König
c1c4413258 drm/radeon: make VM size a module parameter (v2)
v2: agd5f: simplify patch

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09 22:06:53 -04:00
Christian König
ce6758c8bd drm/radeon: rename alt_domain to allowed_domains
And also domain to prefered_domains. That matches better
what those values represent.

Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: Marek Olšák <maraeo@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09 22:06:52 -04:00
Christian König
b5be1a839a drm/radeon: use the SDMA on for buffer moves on CIK again
The underlying reason for the crashes seems to be fixed now.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09 22:06:52 -04:00
Christian König
7f90fc9650 drm/radeon: remove range check from *_gart_set_page
We never check the return value anyway and if the
index isn't valid would crash way before calling
the functions.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09 22:06:51 -04:00
Christian König
0986c1a55c drm/radeon: stop poisoning the GART TLB
When we set the valid bit on invalid GART entries they are
loaded into the TLB when an adjacent entry is loaded. This
poisons the TLB with invalid entries which are sometimes
not correctly removed on TLB flush.

For stable inclusion the patch probably needs to be modified a bit.

Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09 22:06:50 -04:00
Mario Kleiner
ea29286146 drm/radeon: hdmi deep color modes must obey clock limit of sink.
Make sure that a hdmi deep color mode can't exceed the max tmds
clock limit of a hdmi sink if such a limit is defined by edid.

If requested deep color bpc would exceed the limit given the mode
to be set, try to degrade gracefully to lower supported deep color
bpc or to standard 8 bpc if needed.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09 22:06:50 -04:00
Alex Deucher
d71c48f69c drm/radeon: add missing vce init case for hawaii
Hawaii has the same version of VCE as other CIK parts.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2014-06-09 22:06:48 -04:00
Christian König
5e167cdbf6 drm/radeon: use lower_32_bits where appropriate
Replace occurrences of "v & 0xffffffff" with lower_32_bits(v)
when it's next to an upper_32_bits(v). Also remove unnecessary
"upper_32_bits(v) & 0xffffffff" code snippets.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09 22:06:48 -04:00
Damien Lespiau
f95aeb17f5 drm: Remove DRM_ARRAY_SIZE() for ARRAY_SIZE()
I cannot see a need to provide a DRM_ version of ARRAY_SIZE(), only used
in a few places. I suspect its usage has been spread by copy & paste
rather than anything else.

Let's just remove it for plain ARRAY_SIZE().

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-06-10 09:36:17 +10:00
Damien Lespiau
10d9b4ed30 drm: Remove spurious ';'
One small step after another, the never-ending crusade towards better
code continues.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-06-10 09:35:42 +10:00
Dave Airlie
8d4ad9d4bb Merge commit '9e9a928eed8796a0a1aaed7e0b676db86ba84594' into drm-next
Merge drm-fixes into drm-next.

Both i915 and radeon need this done for later patches.

Conflicts:
	drivers/gpu/drm/drm_crtc_helper.c
	drivers/gpu/drm/i915/i915_drv.h
	drivers/gpu/drm/i915/i915_gem.c
	drivers/gpu/drm/i915/i915_gem_execbuffer.c
	drivers/gpu/drm/i915/i915_gem_gtt.c
2014-06-05 20:28:59 +10:00
Dave Airlie
4f71d0cb76 drm/dp: add a hw mutex around the transfer functions. (v2)
This should avoid races between connector probing and HPD
irqs in the future, currently mode_config.mutex blocks this
possibility.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-06-05 09:54:29 +10:00
Daniel Vetter
6e9f798d91 drm: Split connection_mutex out of mode_config.mutex (v3)
After the split-out of crtc locks from the big mode_config.mutex
there's still two major areas it protects:
- Various connector probe states, like connector->status, EDID
  properties, probed mode lists and similar information.
- The links from connector->encoder and encoder->crtc and other
  modeset-relevant connector state (e.g. properties which control the
  panel fitter).

The later is used by modeset operations. But they don't really care
about the former since it's allowed to e.g. enable a disconnected VGA
output or with a mode not in the probed list.

Thus far this hasn't been a problem, but for the atomic modeset
conversion Rob Clark needs to convert all modeset relevant locks into
w/w locks. This is required because the order of acquisition is
determined by how userspace supplies the atomic modeset data. This has
run into troubles in the detect path since the i915 load detect code
needs _both_ protections offered by the mode_config.mutex: It updates
probe state and it needs to change the modeset configuration to enable
the temporary load detect pipe.

The big deal here is that for the probe/detect users of this lock a
plain mutex fits best, but for atomic modesets we really want a w/w
mutex. To fix this lets split out a new connection_mutex lock for the
modeset relevant parts.

For simplicity I've decided to only add one additional lock for all
connector/encoder links and modeset configuration states. We have
piles of different modeset objects in addition to those (like bridges
or panels), so adding per-object locks would be much more effort.

Also, we're guaranteed (at least for now) to do a full modeset if we
need to acquire this lock. Which means that fine-grained locking is
fairly irrelevant compared to the amount of time the full modeset will
take.

I've done a full audit, and there's just a few things that justify
special focus:
- Locking in drm_sysfs.c is almost completely absent. We should
  sprinkle mode_config.connection_mutex over this file a bit, but
  since it already lacks mode_config.mutex this patch wont make the
  situation any worse. This is material for a follow-up patch.

- omap has a omap_framebuffer_flush function which walks the
  connector->encoder->crtc links and is called from many contexts.
  Some look like they don't acquire mode_config.mutex, so this is
  already racy. Again fixing this is material for a separate patch.

- The radeon hot_plug function to retrain DP links looks at
  connector->dpms. Currently this happens without any locking, so is
  already racy. I think radeon_hotplug_work_func should gain
  mutex_lock/unlock calls for the mode_config.connection_mutex.

- Same applies to i915's intel_dp_hot_plug. But again, this is already
  racy.

- i915 load_detect code needs to acquire this lock. Which means the
  w/w dance due to Rob's work will be nicely contained to _just_ this
  function.

I've added fixme comments everywhere where it looks suspicious but in
the sysfs code. After a quick irc discussion with Dave Airlie it
sounds like the lack of locking in there is due to sysfs cleanup fun
at module unload.

v1: original (only compile tested)

v2: missing mutex_init(), etc (from Rob Clark)

v3: i915 needs more care in the conversion:
- Protect the edp pp logic with the connection_mutex.
- Use connection_mutex in the backlight code due to
  get_pipe_from_connector.
- Use drm_modeset_lock_all in suspend/resume paths.
- Update lock checks in the overlay code.

Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Rob Clark <robdclark@gmail.com>
2014-06-04 13:25:21 +10:00
Jani Nikula
72082093ae drm/radeon: replace drm_get_connector_name() with direct name field use
Generated using semantic patch:

@@
expression E;
@@

- drm_get_connector_name(E)
+ E->name

[airlied: regenerated]

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-06-04 13:17:30 +10:00
Christian König
fa7f517cb2 drm/radeon: rework page flip handling v4
Instead of trying to flip inside the vblank period when
the buffer is idle, offload blocking for idle to a kernel
thread and program the flip directly into the hardware.

v2: add error handling, fix EBUSY handling
v3: add proper exclusive_lock handling
v4: update crtc->primary->fb when the flip actually happens

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-06-04 11:59:44 +10:00
Dave Airlie
b15eb4ea15 Revert "drm/radeon: rework page flip handling v3"
This reverts commit 1aab5514ca.

Apply the fixed up version instead.
2014-06-04 11:59:31 +10:00
Mario Kleiner
89b92339c1 drm/radeon: Limit hdmi deep color bit depth to 12 bpc.
DCE-4/5/6 can't support more than 12 bpc deep color over hdmi,
so clamp to 12 bpc when a hdmi deep color capable display is
connected. This even makes sense on DCE-8+, which could do up
to 16 bpc, as driving with more than 12 bpc would only waste
video bandwidth as long as we don't support framebuffers with
more than 12 bpc depth.

On pre-DCE4 we clamp hdmi bit depth to 8 bpc, as those asics
don't support hdmi deep color.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 18:37:33 -04:00
Alex Deucher
7b555e068d drm/radeon: Setup HDMI_CONTROL for hdmi deep color gcp's (v2)
Program HDMI_CONTROL to send general control packets
for hdmi deep color mode signalling at every video
frame if bpc > 8.

This is only supported on evergreen / DCE-4 and later.

v2: rebase

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 18:37:33 -04:00
Alex Deucher
f71d9ebd92 drm/radeon: fix pll setup for hdmi deep color (v7)
Need to adjust the pll up for deep color modes.
Additionally, the atom bpc defines were wrong in certain
cases.

v2: set the adjusted clock to the pll clock for hdmi deep
color.  This fixes display and audio issues with deep color
as reported by Andy Furniss <adf.lists@gmail.com>

v3: set crtc_clock as well

v4: setcrtcinfo on the adjusted mode

v5: just use the adjusted clock for setting the pll

v6: only use the adjusted clock for hdmi

v7: only DCE5 and DCE6 and bpc > 8

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 18:37:32 -04:00
Alex Deucher
79766915d9 drm/radeon: use hw cts/n values for deep color
I'm not really sure how these should be calculated
for deep color.  The hw generated values seem to work.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:16 -04:00
Alex Deucher
7d5ab3009a drm/radeon: only apply hdmi bpc pll flags when encoder mode is hdmi
May fix display issues with non-HDMI displays.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2014-06-02 10:25:16 -04:00
Alex Deucher
642528355c drm/radeon/atom: fix dithering on certain panels
We need to specify the encoder mode as LVDS for eDP
when using the Crtc_Source atom table in order to properly
set up the FMT hardware.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=73911

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2014-06-02 10:25:15 -04:00
Christian König
3d7938faf3 drm/radeon: optimize CIK VM handling v2
Fill VM page tables from the GART page table if applicable.

v2: fix copy&paste error

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:15 -04:00
Christian König
f3982ac141 drm/radeon: optimize SI VM handling
Fill VM page tables from the GART page table if applicable.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:14 -04:00
Christian König
0e97703c5c drm/radeon: add define for flags used in R600+ GTT
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:13 -04:00
Christian König
1aab5514ca drm/radeon: rework page flip handling v3
Instead of trying to flip inside the vblank period when
the buffer is idle, offload blocking for idle to a kernel
thread and program the flip directly into the hardware.

v2: add error handling, fix EBUSY handling
v3: add proper exclusive_lock handling

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:13 -04:00
Christian König
1a0e791841 drm/radeon: separate vblank and pflip crtc handling
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:12 -04:00
Christian König
157fa14dc4 drm/radeon: split page flip and pending callback
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:11 -04:00
Christian König
75f36d8619 drm/radeon: remove drm_vblank_get|put from pflip handling
We activate the VBLANK irq manually anyway, so this is unnecessary.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:11 -04:00
Christian König
e928c61a85 drm/radeon: remove (pre|post)_page_flip callbacks
They are doing the same on all generations anyway.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:10 -04:00
Alex Deucher
3b6d9fd23e drm/radeon/dp: fix lane/clock setup for dp 1.2 capable devices
Only DCE5+ asics support DP 1.2.

Noticed by ArtForz on IRC.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2014-06-02 10:25:09 -04:00
Alex Deucher
af5d36539d drm/radeon: fix typo in radeon_connector_is_dp12_capable()
We were checking the ext clock rather than the display clock.

Noticed by ArtForz on IRC.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2014-06-02 10:25:09 -04:00
Émeric MASCHINO
799acb46bd radeon: Remove useless quirk for zx1/FireGL X1 combo introduced with fdo #7770
Removes useless quirk a7f465f73363fce409870f62173d518b1bc02ae6 introduced with
fdo #7770 as a failed attempt to minimize stability issues with hp zx1 chipset/
ATI FireGL X1 graphics adapter configuration
(see http://marc.info/?l=linux-ia64&m=140077543819871&w=2 for details/reason)

Signed-off-by: Émeric MASCHINO <emeric.maschino@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:08 -04:00
Michele CURTI
d148f9e02e drm/radeon: use NULL instead of zero in clearstate headers
Signed-off-by: Michele Curti <michele.curti@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:07 -04:00
Michele CURTI
1243235469 drm/radeon: use NULL instead of zero in object functions
Signed-off-by: Michele Curti <michele.curti@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:06 -04:00
Rafał Miłecki
8e4d9f8180 drm/radeon/hdmi: DCE2: simplify audio workaround
Thanks to advanced RE of fglrx we finally know what exactly needs to be
handled of AFMT change.

This has been tested for possible regressions on:
1) DCE2 HD2400 (RV610)
2) DCE3 HD3470 (RV620)

For a reference and details see:
https://bugzilla.kernel.org/show_bug.cgi?id=76231

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:06 -04:00
Rafał Miłecki
68706337da drm/radeon/hdmi: DCE2: update setmode
Recent RE efforts revealed ops performed by fglrx during HDMI setup.
This mostly adds masks to r/w ops plus few single missing bits.

This has been tested for possible regressions on:
1) DCE2 HD2400 (RV610)
2) DCE3 HD3470 (RV620)

For a reference and details see:
https://bugzilla.kernel.org/show_bug.cgi?id=76231

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:05 -04:00
Rafał Miłecki
2e93cac90c drm/radeon/hdmi: DCE3: clean ACR control
What initially seemed to be a typo in fglrx (using register 0x740c
instead of 0x74dc) appeared to be a correct behavior. DCE3 has ACR and
CRC registers swapped which explains why we needed
WREG32(HDMI0_AUDIO_CRC_CONTROL + offset, 0x1000);

This has been tested for possible regressions on DCE3 HD3470 (RV620).

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:04 -04:00
Rafał Miłecki
8f33a156c2 drm/radeon/hdmi: use separated file for DCE 3.1/3.2 code
DCE 3.1 and 3.2 should be programmed in a different way than DCE 2 and
DCE 3. The order of setting registers and sets of registers are
different.
It's still unsure how we will handle DCE 3.1 vs. DCE 3.2, since they
have few differences as well.
For now separate DCE 2 and DCE 3 path, so we can work on it without a
risk of breaking DCE 3.1+.

This has been tested for possible regressions on DCE32 HD4550 (RV710).

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:04 -04:00
Christian König
1c89d27fb9 drm/radeon: add proper support for RADEON_VM_BLOCK_SIZE v2
This patch makes it possible to decide how many address
bits are spend on the page directory vs the page tables.

v2: remove unintended change

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:03 -04:00
Christian König
ec3dbbcbd7 drm/radeon: add large PTE support for NI, SI and CIK v5
This patch implements support for VRAM page table entry compression.
PTE construction is enhanced to identify physically contiguous page
ranges and mark them in the PTE fragment field. L1/L2 TLB support is
enabled for 64KB (SI/CIK) and 256KB (NI) PTE fragments, significantly
improving TLB utilization for VRAM allocations.

Linear store bandwidth is improved from 60GB/s to 125GB/s on Pitcairn.
Unigine Heaven 3.0 sees an average improvement from 24.7 to 27.7 FPS
on default settings at 1920x1200 resolution with vsync disabled.

See main comment in radeon_vm.c for a technical description.

v2 (chk): rebased and simplified.
v3 (chk): add missing hw setup
v4 (chk): rebased on current drm-fixes-3.15
v5 (chk): fix comments and commit text

Signed-off-by: Jay Cornwall <jay@jcornwall.me>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-02 10:25:02 -04:00
Alex Deucher
831719d62f drm/radeon: add a i2c bus mutex
The i2c and aux buses use the same pads so add
a mutex to protect access to the pads.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
2014-06-02 10:25:02 -04:00
Christian König
91b0275c0e drm/radeon: use the CP DMA on CIK
The SDMA sometimes doesn't seem to work reliable.

Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
2014-06-02 10:57:04 +02:00