Do not use encoder disable/enable callbacks to control bypass
mode as this seems to mess with the signals not liked by
displays. This also makes more sense since the encoder is
already defined to be parallel RGB/LVDS at creation time.
Signed-off-by: NStefan Agner <stefan@agner.ch>
Tested-By: NMeng Yi <meng.yi@nxp.com>

I was a bit over-eager in my cleanup in

commit 95c081c1
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Tue Jun 21 10:54:12 2016 +0200

    drm: Move master pointer from drm_minor to drm_device

Noticed by Chris Wilson.

Fixes: 95c081c1 ("drm: Move master pointer from drm_minor to drm_device")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Tested-by: NChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NEmil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Fixes for radeon and amdgpu for 4.9:
- allow an additional reg in the SI reg checker
- fix thermal sensor readback on CZ/ST
- misc bug fixes

* 'drm-next-4.9' of git://people.freedesktop.org/~agd5f/linux: (21 commits)
  drm/amd/powerplay: fix bug stop dpm can't work on Vi.
  drm/amd/powerplay: notify smu no display by default.
  drm/amdgpu/dpm: implement thermal sensor for CZ/ST
  drm/amdgpu/powerplay: implement thermal sensor for CZ/ST
  drm/amdgpu: disable smu hw first on tear down
  drm/amdgpu: fix amdgpu_need_full_reset (v2)
  drm/amdgpu/si_dpm: Limit clocks on HD86xx part
  drm/amd/powerplay: fix static checker warnings in smu7_hwmgr.c
  drm/amdgpu: potential NULL dereference in debugfs code
  drm/amd/powerplay: fix static checker warnings in smu7_hwmgr.c
  drm/amd/powerplay: fix static checker warnings in iceland_smc.c
  drm/radeon: change vblank_time's calculation method to reduce computational error.
  drm/amdgpu: change vblank_time's calculation method to reduce computational error.
  drm/amdgpu: clarify UVD/VCE special handling for CG
  drm/amd/amdgpu: enable clockgating only after late init
  drm/radeon: allow TA_CS_BC_BASE_ADDR on SI
  drm/amdgpu: initialize the context reset_counter in amdgpu_ctx_init
  drm/amdgpu/gfx8: fix CGCG_CGLS handling
  drm/radeon: fix modeset tear down code
  drm/radeon: fix up dp aux tear down (v2)
  ...

Signed-off-by: NRex Zhu <Rex.Zhu@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Signed-off-by: NRex Zhu <Rex.Zhu@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Previous code was just a copy/paste from KV.
Reviewed-by: NTom St Denis <tom.stdenis@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Add missing functionality.
Reviewed-by: NTom St Denis <tom.stdenis@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Otherwise, you can't disable dpm.

Tested-by and Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

IP types are not an index.  Each asic may have number and
type of IPs.  Properly check the the type rather than
using the type id as an index.

v2: fix all the IPs to not use IP type as an idx as well.
Reviewed-by: NChunming Zhou <david1.zhou@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Limit clocks on a specific HD86xx part to avoid
crashes (while awaiting an appropriate PP fix).
Signed-off-by: NTom St Denis <tom.stdenis@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Signed-off-by: NRex Zhu <Rex.Zhu@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

debugfs_create_file() returns NULL on error, it only returns error
pointers if debugfs isn't enabled in the config and we checked for that
earlier so it can't happen.

Fixes: 4f4824b5 ('drm/amd/amdgpu: Convert ring debugfs entries to binary')
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

variable dereferenced before check it
Signed-off-by: NRex Zhu <Rex.Zhu@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

add array length check to avoid buffer overflow.
Signed-off-by: NRex Zhu <Rex.Zhu@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Ported from Rex's amdgpu change.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Signed-off-by: NRex Zhu <Rex.Zhu@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

UVD and VCE CG are handled specially, however the previous
fix for this skipped late init for those blocks rather than
just CG.  Just protect the CG function call.  No functional
change since UVD and VCE don't currently utilize a late_init
function.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Sometimes during multiple reboots, the system hangs
during bootup. The issue is very random and happens
once in around 50 reboots or so.

It seems if clockgating is enabled before late init,
the GFX engine sometimes does not respond.

This patch changes the ordering a little so that
both powergating and clockgating are enabled only
after late init calls.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NArindam Nath <arindam.nath@amd.com>
Tested-by: NSunil Uttarwar <Sunil.Uttarwar1@amd.com>
Reviewed-by: NTom St Denis <tom.stdenis@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Required for border colors in compute shaders.
Reviewed-by: NEdward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NMarek Olšák <marek.olsak@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Ensure that we really only report a GPU reset if one has happened since the
creation of the context.
Signed-off-by: NNicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

When setting up the RLC, only disable the CGCG and
CGLS bits rather than clearing the entire register
to avoid losing the golden settings.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

The ordering caused problems.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=98200Reviewed-and-Tested-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Port the amdgpu fixes from Grazvydas to radeon.

v2: drop unrelated whitespace change.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=98200Reviewed-and-Tested-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

When DisplayPort AUX channel i2c adapter is registered, drm_connector's
kdev member is used as a parent, so we get sysfs structure like:
  /drm/card1/card1-DP-2/i2c-12
Because of that, there is a problem when drm core (and not the driver)
calls drm_connector_unregister(), it removes parent sysfs entries
('card1-DP-2' in our example) while the i2c adapter is still registered.
Later we get a WARN when we try to unregister the i2c adapter:

  WARNING: CPU: 3 PID: 1374 at fs/sysfs/group.c:243 sysfs_remove_group+0x14c/0x150
  sysfs group ffffffff82911e40 not found for kobject 'i2c-12'

To fix it, we can use the .early_unregister hook to unregister the i2c
adapter before drm_connector's sysfs is torn down.
Signed-off-by: NGrazvydas Ignotas <notasas@gmail.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Just flushing out my -misc queue. Slightly important are the prime
refcount/unload fixes from Chris.

There's also the reservation stuff from Chris still pending, and Sumits
hasn't landed that yet. Might get another pull for that, but pls don't
hold up the main pull for it ;-)

* tag 'topic/drm-misc-2016-10-11' of git://anongit.freedesktop.org/drm-intel:
  drm/crtc: constify drm_crtc_index parameter
  drm: use the right function name in documentation
  drm: Release resources with a safer function
  drm: Fix up kerneldoc for new drm_gem_dmabuf_export()
  drm/bridge: Drop drm_connector_unregister and call drm_connector_cleanup directly
  drm/fb-helper: fix sphinx markup for DRM_FB_HELPER_DEFAULT_OPS
  drm/bridge: Add RGB to VGA bridge support
  drm/prime: Take a ref on the drm_dev when exporting a dma_buf
  drm/prime: Pass the right module owner through to dma_buf_export()
  drm/bridge: Call drm_connector_cleanup directly
  drm: simple_kms_helper: Add prepare_fb and cleanup_fb hooks
  drm: Release resources with a safer function

Merge tag 'drm-intel-next-fixes-2016-10-11' of git://anongit.freedesktop.org/drm-intel into drm-next

A big bunch of i915 fixes for drm-next / v4.9 merge window, with more
than half of them also cc: stable. We also continue to have more Fixes:
annotations for our fixes, which should help the backporters and
archeologists.

* tag 'drm-intel-next-fixes-2016-10-11' of git://anongit.freedesktop.org/drm-intel: (27 commits)
  drm/i915: Fix conflict resolution from backmerge of v4.8-rc8 to drm-next
  drm/i915/guc: Unwind GuC workqueue reservation if request construction fails
  drm/i915: Reset the breadcrumbs IRQ more carefully
  drm/i915: Force relocations via cpu if we run out of idle aperture
  drm/i915: Distinguish last emitted request from last submitted request
  drm/i915: Allow DP to work w/o EDID
  drm/i915: Move long hpd handling into the hotplug work
  drm/i915/execlists: Reinitialise context image after GPU hang
  drm/i915: Use correct index for backtracking HUNG semaphores
  drm/i915: Unalias obj->phys_handle and obj->userptr
  drm/i915: Just clear the mmiodebug before a register access
  drm/i915/gen9: only add the planes actually affected by ddb changes
  drm/i915: Allow PCH DPLL sharing regardless of DPLL_SDVO_HIGH_SPEED
  drm/i915/bxt: Fix HDMI DPLL configuration
  drm/i915/gen9: fix the watermark res_blocks value
  drm/i915/gen9: fix plane_blocks_per_line on watermarks calculations
  drm/i915/gen9: minimum scanlines for Y tile is not always 4
  drm/i915/gen9: fix the WaWmMemoryReadLatency implementation
  drm/i915/kbl: KBL also needs to run the SAGV code
  drm/i915: introduce intel_has_sagv()
  ...

Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1476113170-13816-1-git-send-email-jani.nikula@intel.com

The conflict resolution of v4.8-rc8 backmerge to drm-next pulled back in
a few lines of dead code due to the code movement around
i915_gem_reset(), fix that up.

Fixes: ca09fb9f ("Merge tag 'v4.8-rc8' into drm-next")
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@gmail.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161010125017.23911-1-chris@chris-wilson.co.uk

We reserve space in the GuC workqueue for submitting the request in the
future. However, if we fail to construct the request, we need to give
that reserved space back to the system.

Fixes: dadd481b ("drm/i915/guc: Prepare for nonblocking execbuf submission")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97978Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: NMichał Winiarski <michal.winiarski@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161007065327.24515-4-chris@chris-wilson.co.uk
(cherry picked from commit 5ba89908)
Signed-off-by: NJani Nikula <jani.nikula@intel.com>

Along with the interrupt, we want to restore the fake-irq and
wait-timeout detection. If we use the breadcrumbs interface to setup the
interrupt as it wants, the auxiliary timers will also be restored.

v2: Cancel both timers as well, sanitize the IMR.

Fixes: 821ed7df ("drm/i915: Update reset path to fix incomplete requests")
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: NMika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161007065327.24515-3-chris@chris-wilson.co.uk
(cherry picked from commit ad07dfcd)
Signed-off-by: NJani Nikula <jani.nikula@intel.com>

If we run out of enough aperture space to fit the entire object, we
fallback to trying to insert a single page. However, if that also fails,
we currently fail to userspace with an unexpected ENOSPC. (ENOSPC means
to userspace that their batch could not be fitted within the GTT.) Prior
to commit e8cb909a ("drm/i915: Fallback to single page GTT
mmappings for relocations") the approach is to fallback to using the
slow CPU relocation path in case of iomapping failure, and that is the
behaviour we need to restore.

Fixes: e8cb909a ("drm/i915: Fallback to single page GTT mmappings...")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98101Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: NJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161007065327.24515-2-chris@chris-wilson.co.uk
(cherry picked from commit d7f76335)
Signed-off-by: NJani Nikula <jani.nikula@intel.com>

In order not to trigger hangcheck on a idle-but-waiting engine, we need
to distinguish between the pending request queue and the actual
execution queue. This is done later in "drm/i915: Enable multiple
timelines" but for now we need a temporary fix to prevent blaming the
wrong engine for a GPU hang.

(Note that this causes a temporary subtle change in how we decide when
to allow a waitboost to be re-awarded back to the waiter, the temporary
effect is that if the wait is upon the most current execution the wait
is given for free, instead of checking to see if the client stalled
itself. This will be repaired in "drm/i915: Enable multiple timelines".)

Fixes: 0a046a0e ("drm/i915: Nonblocking request submission")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98104Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: NJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: NMika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161007065327.24515-1-chris@chris-wilson.co.uk
(cherry picked from commit 8687b3ec)
Signed-off-by: NJani Nikula <jani.nikula@intel.com>

Allow returning "connected" or "unknown" connector status for DP branch
devices that don't have an EDID. Currently we'd claim the thing as
"disconnected" if there is no EDID.

This stuff used to broken already, I think, but it got more broken by
commit f21a2198 ("drm/i915: Splitting intel_dp_detect")

Cc: Damien Cassou <damien@cassou.me>
Cc: freedesktop.org@gp.mailgun.org
Cc: Arno <blouin.arno@gmail.com>
Cc: Shubhangi Shrivastava <shubhangi.shrivastava@intel.com>
Cc: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Cc: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Cc: stable@vger.kernel.org
Tested-by: NArno <blouin.arno@gmail.com>
Fixes: f21a2198 ("drm/i915: Splitting intel_dp_detect")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=83348Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1475481316-8194-2-git-send-email-ville.syrjala@linux.intel.comReviewed-by: NAnder Conselvan de Oliveira <conselvan2@gmail.com>
(cherry picked from commit 5cb651a7)
Signed-off-by: NJani Nikula <jani.nikula@intel.com>

We can't rely on connector->status in the detect() hook if the long hpd
was already handled by the dig_port_work as that won't update
connector->status. Thus we have to defer the long hpd handling entirely
until the hotplug work runs to avoid the double long hpd handling
the "detect_done" flag is trying to prevent.

We'll start to depend on connector->status being up to date in a
following patch.

Cc: Damien Cassou <damien@cassou.me>
Cc: freedesktop.org@gp.mailgun.org
Cc: Arno <blouin.arno@gmail.com>
Cc: Shubhangi Shrivastava <shubhangi.shrivastava@intel.com>
Cc: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Cc: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Cc: stable@vger.kernel.org
Tested-by: NArno <blouin.arno@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=83348Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1475481316-8194-1-git-send-email-ville.syrjala@linux.intel.comReviewed-by: NAnder Conselvan de Oliveira <conselvan2@gmail.com>
(cherry picked from commit 27d4efc5)
Signed-off-by: NJani Nikula <jani.nikula@intel.com>

On Braswell, at least, we observe that the context image is written in
multiple phases. The first phase is to clear the register state, and
subsequently rewrite it. A GPU reset at the right moment can interrupt
the context update leaving it corrupt, and our update of the RING_HEAD
is not sufficient to restart the engine afterwards. To recover, we need
to reset the registers back to their original values. The context state
is lost. What we need is a better mechanism to serialise the reset with
pending flushes from the GPU.

Fixes: 821ed7df ("drm/i915: Update reset path to fix incomplete requests")
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: NMika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161004201132.21801-2-chris@chris-wilson.co.uk
(cherry picked from commit a3aabe86)
Signed-off-by: NJani Nikula <jani.nikula@intel.com>

When decoding the semaphores inside hangcheck, we need to use the hw-id
and not the local array index.

Fixes: de1add36 ("drm/i915: Decouple execbuf uAPI ...")
Testcase: igt/gem_exec_whisper/hang # gen6-7
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Reviewed-by: NJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161003124516.12388-3-chris@chris-wilson.co.uk
(cherry picked from commit 348b9b11)
Signed-off-by: NJani Nikula <jani.nikula@intel.com>

We use obj->phys_handle to choose the pread/pwrite path, but as
obj->phys_handle is a union with obj->userptr, we then mistakenly use
the phys_handle path for userptr objects within pread/pwrite.

Testcase: igt/gem_userptr_blits/forbidden-operations
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97519Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: stable@vger.kernel.org
Reviewed-by: NJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161003124516.12388-2-chris@chris-wilson.co.uk
(cherry picked from commit 5f12b80a)
Signed-off-by: NJani Nikula <jani.nikula@intel.com>

When we enable the per-register access mmiodebug, it is to detect which
access is illegal. Reporting on earlier untraced access outside of the
mmiodebug does not help debugging (as the suspicion is immediately put
upon the current register which is not at fault)!

References: https://bugs.freedesktop.org/show_bug.cgi?id=97985Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: NMika Kuoppala <mika.kuoppala@intel.com>
Cc: stable@vger.kernel.org
Link: http://patchwork.freedesktop.org/patch/msgid/20161003124516.12388-1-chris@chris-wilson.co.uk
(cherry picked from commit dda96033)
Signed-off-by: NJani Nikula <jani.nikula@intel.com>

We were previously adding all the planes owned by the CRTC even when
the ddb partitioning didn't change for them. As a consequence, a lot
of functions were being called when we were just moving the cursor
around the screen, such as skylake_update_primary_plane().

This was causing flickering on the primary plane when moving the
cursor. I'm not 100% sure which operation caused the flickering, but
we were writing to a lot of registers, so it could be any of these
writes. With this patch, just moving the mouse won't add the primary
plane to the commit since it won't trigger a change in DDB
partitioning.

v2: Use skl_ddb_entry_equal() (Lyude).
v3: Change Reported-and-bisected-by: to Reported-by: for checkpatch

Fixes: 05a76d3d ("drm/i915/skl: Ensure pipes with changed wms get added to the state")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97888
Cc: Mike Lothian <mike@fireburn.co.uk>
Cc: stable@vger.kernel.org
Reported-by: NMike Lothian <mike@fireburn.co.uk>
Signed-off-by: NPaulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: NLyude <cpaul@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1475177808-29955-1-git-send-email-paulo.r.zanoni@intel.com
(cherry picked from commit 7f60e200)
Signed-off-by: NJani Nikula <jani.nikula@intel.com>

DPLL_SDVO_HIGH_SPEED must be set for SDVO/HDMI/DP, but nowhere is it
forbidden to set it for LVDS/CRT as well. So let's also set it on
CRT to make it possible to share the DPLL between HDMI and CRT.

What that bit apparently does is enable the x5 clock to the port,
which then pumps out the bits on both edges of the clock. The DAC
doesn't need that clock since it's not pumping out bits, but I don't
think it hurts to have the DPLL output that clock anyway.

This is fairly important on IVB since it has only two DPLLs with three
pipes. So trying to drive three or more PCH ports with three pipes
is only possible when at least one of the DPLLs gets shared between
two of the pipes.

SNB doesn't really need to do this since it has only two pipes. It could
be done to avoid enabling the second DPLL at all in certain cases, but
I'm not sure that's such a huge win. So let's not do it for SNB, at
least for now. On ILK it never makes sense as the DPLLs can't be shared.

v2: Just always enable the high speed clock to keep things simple (Daniel)
    Beef up the commit message a bit (Daniel)

Cc: Nick Yamane <nick.diego@gmail.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Tested-by: NNick Yamane <nick.diego@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97204Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1474878646-17711-1-git-send-email-ville.syrjala@linux.intel.comReviewed-by: NAnder Conselvan de Oliveira <conselvan2@gmail.com>
(cherry picked from commit 7d7f8633)
Signed-off-by: NJani Nikula <jani.nikula@intel.com>