This can only fail because of a bug in the code.
Suggested-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
[danvet: Squash in follow-up to also remove start_vbl_count from
intel_crtc->atomic and put it into the intel_crtc directly - it's not
precomputed state.]
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

We needed this originally for updating pagetables in plane commit
functions. But that's extracted into prepare/cleanup now. The other
issue was running updates when the pipe was off. That's also now
fixed.
Suggested-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Now that there's only a single path for all atomic updates we can call
intel_(pre/post)_plane_update from intel_atomic_commit directly. This
makes the intention more clear.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Huzzah! \o/
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

In Indirect context w/a batch buffer,
+WaSetDisablePixMaskCammingAndRhwoInCommonSliceChicken

v2: SKL revision id was used for BXT, copy paste error found during
internal review (Bob Beckett).

v3: explain why part of the WA is in Per ctx batch (Mika)

Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: NArun Siluvery <arun.siluvery@linux.intel.com>
Reviewed-by: NMika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

In Indirect context w/a batch buffer,
+WaFlushCoherentL3CacheLinesAtContextSwitch:skl,bxt

v2: address static checker warning where unsigned value was checked for
less than zero which is never true (Dan Carpenter).

v3: The WA uses default value of GEN8_L3SQCREG4 during flush but that disables
some other WA; update default value to retain it and document dependency (Mika).

Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: NArun Siluvery <arun.siluvery@linux.intel.com>
Reviewed-by: NMika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

In Indirect and Per context w/a batch buffer,
+WaDisableCtxRestoreArbitration

v2: SKL revision id was used for BXT, copy paste error found during
internal review (Bob Beckett).

v3: use updated macro.
Reviewed-by: NMika Kuoppala <mika.kuoppala@intel.com>
Cc: Robert Beckett <robert.beckett@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: NArun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

This patch only enables support for Gen9, the actual WA will be
initialized in subsequent patches.

The WARN that we use to warn user if WA batch support is not available
for a particular Gen is replaced with DRM_ERROR as warning here doesn't
really add much value.

v2: include all infrastructure bits in this patch so that subsequent
changes only correspond the WA added (Chris)

v3: use updated macro.
Reviewed-by: NMika Kuoppala <mika.kuoppala@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: NArun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

v2: Patch leakage fixed
Signed-off-by: NNick Hoath <nicholas.hoath@intel.com>
Reviewed-by: NMika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

I was confused shortly whether the compat was needed for the int,
until I noticed the pointer in the original.

Also remove typedef.

v2: Review from Chris.
- Add comments.
- Also change the int param in the original structure.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

This fixes the breakage caused by

commit eddfcbcd
Author: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Date:   Mon Jun 15 12:33:53 2015 +0200

    drm/i915: Update less state during modeset.

    No need to repeatedly call update_watermarks, or update_fbc.
    Down to a single call to update_watermarks in .crtc_enable
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NMatt Roper <matthew.d.roper@intel.com>
    Tested-by(IVB): Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Add missing shared dpll disable to the noatomic disable function.

This function will be replaced by its atomic counterpart soon.

Changes since v1:
- intel_crtc->active and watermarks are fixed by a patch from
  Patrik Jakobsson
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Fill in driver type, hsync, vrefresh and name.
Those members are not read out but can be calculated from the mode.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Updated the HAS_CORE_RING_FREQ macro to add the broxton check,
so as to disallow the programming & read of ring frequency
table for it.

Issue: VIZ-5144
Suggested-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NAkash Goel <akash.goel@intel.com>
Reviewed-by: NRodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Added a new HAS_CORE_RING_FREQ macro, currently used in
gen6_update_ring_freq & i915_ring_freq_table debugfs function.
The programming & read of ring frequency table is needed for newer
GEN(>=6) platforms, except VLV/CHV.

Issue: VIZ-5144
Suggested-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NAkash Goel <akash.goel@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Calculate all state using a normal transition, but afterwards fudge
crtc->state->active back to its old value. This should still allow
state restore in setup_hw_state to work properly.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

And get rid of things that are no longer true. This function is only
used for forcing a modeset when encoder properties are changed.

Because this is not yet done atomically, assume a full modeset is
needed and force a modeset on the crtc.

Changes since v1:
- s/reset/force modeset/
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

This allows us to get rid of the set_init_power in
modeset_update_crtc_domains. The state should be sanitized enough
after setup_hw_state to not need the init power.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

The previous commit converted hw readout to atomic, all the new_*
members were used for restoring the old state, but with the
conversion of suspend to atomic there's no use left for them.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Instead of all the ad-hoc updating, duplicate the old state first
before reading out the hw state, then restore it.

intel_display_resume is a new function that duplicates the sw state,
then reads out the hw state, and commits the old state.

intel_display_setup_hw_state now only reads out the atomic state.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90396Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drm/i915: Readout initial hw mode, v2.

Atomic requires a mode blob when crtc_state->enable is true, or
you get a huge warn_on.

With a few tweaks the mode we read out from hardware could be used
as the real mode without a modeset, but this requires too much
testing, so for now force a modeset the first time the mode blob's
updated.

This preserves the old behavior, because previously we never set
the initial mode, which always meant that a modeset happened
when the mode was first set.

Changes since v1:
- Add a description in intel_modeset_readout_hw_state of how the
  recalculation is done.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

This is required to properly initialize vblanks on the active crtc.
Without it drm_calc_vbltimestamp_from_scanoutpos can fail with
crtc 0: Noop due to uninitialized mode.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

There is a WARN_ON in drm_atomic_crtc_check for this when exposing the atomic property.
If the mode_blob still exists, but enable = false then all updates are rejected with -EINVAL.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Unreference the old mode_blob by calling the crtc_destroy_state
helper before zeroing the crtc_state.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

All non-primary planes get disabled during hw readout,
this reduces complexity and means not having to do some plane
visibility checks during the first commit.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

This change adds the programming of the MOCS registers to the gen 9+
platforms. The set of MOCS configuration entries introduced by this
patch is intended to be minimal but sufficient to cover the needs of
current userspace - i.e. a good set of defaults. It is expected to be
extended in the future to provide further default values or to allow
userspace to redefine its private MOCS tables based on its demand for
additional caching configurations. In this setup, userspace should
only utilize the first N entries, higher entries are reserved for
future use.

It creates a fixed register set that is programmed across the different
engines so that all engines have the same table. This is done as the
main RCS context only holds the registers for itself and the shared
L3 values. By trying to keep the registers consistent across the
different engines it should make the programming for the registers
consistent.

v2:
-'static const' for private data structures and style changes.(Matt Turner)
v3:
- Make the tables "slightly" more readable. (Damien Lespiau)
- Updated tables fix performance regression.
v4:
- Code formatting. (Chris Wilson)
- re-privatised mocs code. (Daniel Vetter)
v5:
- Changed the name of a function. (Chris Wilson)
v6:
- re-based
- Added Mesa table entry (skylake & broxton) (Francisco Jerez)
- Tidied up the readability defines (Francisco Jerez)
- NUMBER of entries defines wrong. (Jim Bish)
- Added comments to clear up the meaning of the tables (Jim Bish)
Signed-off-by: NPeter Antoine <peter.antoine@intel.com>

v7 (Francisco Jerez):
- Don't write L3-specific MOCS_ESC/SCC values into the e/LLC control
  tables.  Prefix L3-specific defines consistently with L3_ and
  e/LLC-specific defines with LE_ to avoid this kind of confusion in
  the future.
- Change L3CC WT define back to RESERVED (matches my hardware
  documentation and the original patch, probably a misunderstanding
  of my own previous comment).
- Drop Android tables, define new minimal tables more suitable for the
  open source stack.
- Add comment that the MOCS tables are part of the kernel ABI.
- Move intel_logical_ring_begin() and _advance() calls one level down
  (Chris Wilson).
- Minor formatting and style fixes.
v8 (Francisco Jerez):
- Add table size sanity check to emit_mocs_control/l3cc_table() (Chris
  Wilson).
- Add comment about undefined entries being implicitly set to uncached
  for forwards compatibility.
v9 (Francisco Jerez):
- Minor style fixes.
Signed-off-by: NFrancisco Jerez <currojerez@riseup.net>
Acked-by: NDamien Lespiau <damien.lespiau@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Totatlly forgotten that we have these when nuking all the UMS code.
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Nothing depends on this outside initial hw readout, so keep this
struct on the stack instead.

Changes since v1:
- Remove unrelated changes.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

The src and crtc rectangles were never set, resulting in the primary
plane being made invisible on first atomic update.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Instead of doing ad-hoc checks we already have a way of checking
if the state is compatible or not. Use this to force a modeset.

Only during modesets, or with PIPE_CONFIG_QUIRK_INHERITED_MODE
we should check if a full modeset is really needed.

Fastboot will allow the adjust parameter to ignore some stuff
too, and it will fix up differences in state that are ignored
by the compare function.

Changes since v1:
- Increase the value of the lowest m/n to prevent truncation.
- Dump pipe config when fastboot's used, without a modeset.
- Add adjust parameter to intel_compare_link_m_n, which is
  used to adjust m2_n2 if it's a multiple of m_n.
- Add exact parameter intel_compare_m_n.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Use the atomic state instead, this allows removing plane_config
from the crtc after the full hw readout is completed.

The size can be found in the fb, no need for the plane_config.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

There's not much point for calculating the changes for the old
state. Instead just disable all scalers when disabling. It's
probably good enough to just disable the crtc_scaler, but just in
case there's a bug disable all scalers.

This means intel_atomic_setup_scalers is only called in the crtc
check function now, so all the transitional code can be removed.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

This is probably hard to hit right now because in most cases all
atomic locks are taken, but after conversion to atomic this will make
it more likely to corrupt the crtc->config pointer, resulting in hard
to find bugs.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Ring frequency table programming is not required on BXT. Added separate
checks to enable the programming only for SKL & skip for BXT.

v2: Removed the BXT check from gen6_update_ring_freq function

Issue: VIZ-5144
Signed-off-by: NAkash Goel <akash.goel@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Watermark calculations depend on the intel_crtc->active flag to be set
properly. Suspend/resume is broken on SKL and we also get DDB mismatches
without this patch.

The regression was introduced in:

commit eddfcbcd
Author: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Date:   Mon Jun 15 12:33:53 2015 +0200

    drm/i915: Update less state during modeset.

    No need to repeatedly call update_watermarks, or update_fbc.
    Down to a single call to update_watermarks in .crtc_enable
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NMatt Roper <matthew.d.roper@intel.com>
    Tested-by(IVB): Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

v2: Don't touch disable_shared_dpll()
Signed-off-by: NPatrik Jakobsson <patrik.jakobsson@linux.intel.com>
Reviewed-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91203Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Currently we update the freq before masking the interrupts, which can
allow new interrupts to occur before the frequency has changed. These
extra interrupts might waste some cpu cycles. This patch corrects
this by masking interrupts prior to updating the frequency.

Note from Chris:
"Well it won't waste CPU cycles as the interrupt is also masked by the
threshold limits, but there should be no harm at all in reordering the
patch so, and it does make a certain amount of sense."
Signed-off-by: NDeepak S <deepak.s@intel.com>
Signed-off-by: NPraveen Paneri <praveen.paneri@intel.com>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
[danvet: Add note from Chris.]
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Update the hotplug documentation to explain that hotplug storm
is not expected for Display port panels and hence is not handled
in current code.

v2: update the statements as recommended by Daniel
Signed-off-by: NSivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Since
 commit e6292556
 Author: Vandana Kannan <vandana.kannan@intel.com>
 Date:   Wed Jul 1 17:02:57 2015 +0530

    drm/i915/bxt: BUNs related to port PLL

BXT DPLL can now generate frequencies in the 216-223 MHz range.
Adjust the HDMI port clock checks to account for the reduced range
of invalid frequencies.

Cc: Vandana Kannan <vandana.kannan@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NImre Deak <imre.deak@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

We do the exact same steps around the disp2d/pipe A power well
enable/disable on VLV and CHV. Refactor the shared code into
some helpers.

Note that this means we now call vlv_power_sequencer_reset() before
turning off the power well, whereas before we did it after. That
doesn't matter though since vlv_power_sequencer_reset() just resets
the power sequencer software tracking and doesn't touch the hardware
at all.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NSivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

The pipe A power well is the "disp2d" well on CHV and pipe B and C wells
don't even exist. Thereforce we can remove the checks for pipe A vs.
others and just assume it's always pipe A.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NSivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Drop the spurious 'A' from the VLV/CHV ref clock enable define,
and add the "REF" to the VLV ref clock selection bit. Also
s/CLOCK/CLK/ for extra consistency.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NSivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>