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The assumption when adding the intel_display_power_is_enabled() checks
was that if it returns success the power can't be turned off afterwards
during the HW access, which is guaranteed by modeset locks. This isn't
always true, so make sure we hold a dedicated reference for the time of
the access.
Signed-off-by: Imre Deak <[email protected]>
Revieved-by: Mika Kuoppala <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit 1729050eb4bbc192e54069e82069f2811313c1dd)
Signed-off-by: Jani Nikula <[email protected]>
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We have many places in the code where we check if a given display power
domain is enabled and if so access registers backed by this power
domain. We assumed that some modeset lock will prevent the power
reference from vanishing in the middle of the HW access, but this
assumption doesn't always hold. In such cases we get either the wakeref
not held, or an unclaimed register access error message. To fix this in
a future-proof way that's independent of other locks wrap any such
access with a get_ref_if_enabled()/put_ref() pair.
Kudos to Ville and Joonas for the ideas of this new interface.
v2:
- init the power_domains ptr when declaring it everywhere (Joonas)
v3:
- don't report the device to be powered if runtime PM is disabled
CC: Mika Kuoppala <[email protected]>
CC: Chris Wilson <[email protected]>
CC: Joonas Lahtinen <[email protected]>
CC: Ville Syrjälä <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Reviewed-by: Joonas Lahtinen <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit 09731280028ce03e6a27e1998137f1775a2839f3)
Signed-off-by: Jani Nikula <[email protected]>
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DMC debugmask bits should stick so no need to write them
everytime dc state is changed.
v2: Write after firmware has been successfully loaded (Ville)
Signed-off-by: Mika Kuoppala <[email protected]>
Reviewed-by: Imre Deak <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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Cores need to be included into the debug mask. We don't exactly
know what it does but the spec says it must be enabled. So obey.
v2: Cores should be only set for BXT (Imre, Art)
Cc: Imre Deak <[email protected]>
Cc: Runyan, Arthur J <[email protected]>
Signed-off-by: Mika Kuoppala <[email protected]>
Reviewed-by: Imre Deak <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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It has been observed that sometimes disabling the dc6 fails
and dc6 state pops back up, brief moment after disabling. This
has to be dmc save/restore timing issue or other bug in the
way dc states are handled.
Try to work around this issue as we don't have firmware fix
yet available. Verify that the value we wrote for the dmc sticks,
and also enforce it by rewriting it, if it didn't.
v2: Zero rereads on rewrite for extra paranoia (Imre)
Testcase: kms_flip/basic-flip-vs-dpms
References: https://bugs.freedesktop.org/show_bug.cgi?id=93768
Cc: Patrik Jakobsson <[email protected]>
Cc: Rodrigo Vivi <[email protected]>
Cc: Imre Deak <[email protected]>
Signed-off-by: Mika Kuoppala <[email protected]>
Reviewed-by: Imre Deak <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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The DMC can incorrectly run off and allow DC states on it's own. We
don't know the root-cause for this yet but this patch makes it more
visible.
Reviewed-by: Mika Kuoppala <[email protected]>
Signed-off-by: Patrik Jakobsson <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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The plane allocator is specific to DU planes and won't be used for
VSP-based planes, move it with the rest of the DU planes code where it
belongs.
Signed-off-by: Laurent Pinchart <[email protected]>
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Plane sources are configured by the VSPS bit in the PnDDCR4 register.
Although the datasheet states that the bit is updated during vertical
blanking, it seems that updates only occur when the DU group is held in
reset through the DSYSR.DRES bit. Restart the group if the source
changes.
Signed-off-by: Laurent Pinchart <[email protected]>
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Configure the plane source at plane setup time to source frames from
memory or from the VSP1.
Signed-off-by: Laurent Pinchart <[email protected]>
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The R8A7790 DU can source frames directly from the VSP1 devices VSPD0
and VSPD1. VSPD0 feeds DU0/1 plane 0, and VSPD1 feeds either DU2 plane 0
or DU0/1 plane 1.
Allocate the correct fixed plane when sourcing frames from VSPD0 or
VSPD1, and allocate planes in reverse index order otherwise to ensure
maximum availability of planes 0 and 1.
Signed-off-by: Laurent Pinchart <[email protected]>
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Rename plane setup functions using more explicit names, and use local
variables to store intermediate values to increase readability. This
also prepares for VSP compositor support.
Signed-off-by: Laurent Pinchart <[email protected]>
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There's no need for a read-modify-write pattern, all register bits can
be set explicitly.
Signed-off-by: Laurent Pinchart <[email protected]>
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A disabled CRTC can't display planes, the driver shouldn't try to
configure it when updating planes. The DRM core will store the plane
state for us, and the plane will be configured appropriately the next
time the CRTC is enabled.
Signed-off-by: Laurent Pinchart <[email protected]>
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The atomic framework guarantees that the CRTC enable and disable
functions will only be called when needed, there's no need to duplicate
the CRTC state check. By replacing the local CRTC enabled state check at
resume time with the CRTC active state we can remove the local CRTC
enabled state altogether.
Signed-off-by: Laurent Pinchart <[email protected]>
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The drm driver .load() operation is prone to race conditions as it
initializes the driver after registering the device nodes. Its usage is
deprecated, inline it in the probe function and call drm_dev_alloc() and
drm_dev_register() explicitly.
For consistency inline the .unload() handler in the remove function as
well.
Signed-off-by: Laurent Pinchart <[email protected]>
Acked-by: Daniel Vetter <[email protected]>
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This fixes a regression introduced in Linux 4.4.
This is a port of the same fix for radeon-kms in the
patch "drm/radeon: Don't hang in radeon_flip_work_func
on disabled crtc. (v2)"
Limit the amount of time amdgpu_flip_work_func can
delay programming a page flip, by both limiting the
maximum amount of time per wait cycle and the maximum
number of wait cycles. Continue the flip if the limit
is exceeded, even if that may result in a visual or
timing glitch.
This is to prevent a hang of page flips, as reported
in fdo bug #93746: Disconnecting a DisplayPort display
in parallel to a kms pageflip getting queued can cause
the following hang of page flips and thereby an unusable
desktop:
1. kms pageflip ioctl() queues pageflip -> queues execution
of amdgpu_flip_work_func.
2. Hotunplug of display causes the driver to DPMS OFF
the unplugged display. Display engine shuts down,
scanout no longer moves, but stays at its resting
position at start line of vblank.
3. amdgpu_flip_work_func executes while crtc is off, and
due to the non-moving scanout position, the new flip
delay code introduced into Linux 4.4 by
commit 8e36f9d33c13 ("drm/amdgpu: Fixup hw vblank counter/ts..")
enters an infinite wait loop.
4. After reconnecting the display, the pageflip continues
to hang in 3. and the display doesn't update its view
of the desktop.
This patch fixes the Linux 4.4 regression from fdo bug #93746
<https://bugs.freedesktop.org/show_bug.cgi?id=93746>
Reported-by: Bernd Steinhauser <[email protected]>
Signed-off-by: Mario Kleiner <[email protected]>
Cc: <[email protected]> # 4.4+
Cc: Michel Dänzer <[email protected]>
Cc: Alex Deucher <[email protected]>
Reviewed-by: Michel Dänzer <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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This fixes a regression introduced in Linux 4.4.
Limit the amount of time radeon_flip_work_func can
delay programming a page flip, by both limiting the
maximum amount of time per wait cycle and the maximum
number of wait cycles. Continue the flip if the limit
is exceeded, even if that may result in a visual or
timing glitch.
This is to prevent a hang of page flips, as reported
in fdo bug #93746: Disconnecting a DisplayPort display
in parallel to a kms pageflip getting queued can cause
the following hang of page flips and thereby an unusable
desktop:
1. kms pageflip ioctl() queues pageflip -> queues execution
of radeon_flip_work_func.
2. Hotunplug of display causes the driver to DPMS OFF
the unplugged display. Display engine shuts down,
scanout no longer moves, but stays at its resting
position at start line of vblank.
3. radeon_flip_work_func executes while crtc is off, and
due to the non-moving scanout position, the new flip
delay code introduced into Linux 4.4 by
commit 5b5561b3660d ("drm/radeon: Fixup hw vblank counter/ts..")
enters an infinite wait loop.
4. After reconnecting the display, the pageflip continues
to hang in 3. and the display doesn't update its view
of the desktop.
This patch fixes the Linux 4.4 regression from fdo bug #93746
<https://bugs.freedesktop.org/show_bug.cgi?id=93746>
v2: Skip wait immediately if !radeon_crtc->enabled, as
suggested by Michel.
Reported-by: Bernd Steinhauser <[email protected]>
Signed-off-by: Mario Kleiner <[email protected]>
Tested-by: Bernd Steinhauser <[email protected]>
Cc: <[email protected]> # 4.4+
Cc: Michel Dänzer <[email protected]>
Cc: Alex Deucher <[email protected]>
Reviewed-by: Michel Dänzer <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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These platforms should be fine now.
FBC can allow very significant power savings for screen-on idle
systems, but it is worth mentioning that a lot of people won't get
significant power savings by enabling this feature because they may
have something else preventing the system from getting into the
deepest sleep states. Examples may include a hungry wifi device or a
max_performance SATA link power management policy. You can check your
PC state residencies on the powertop "Idle stats" tab. I recommend
trying to run "sudo powertop --auto-tune" and then seeing if the
residencies improve.
Oh, and in case you - the person reading this commit message - found
this commit through git bisect, please do the following:
- Check your dmesg and see if there are error messages mentioning
underruns around the time your problem started happening.
- Download intel-gpu-tools, compile it, and run:
$ sudo ./tests/kms_frontbuffer_tracking --run-subtest '*fbc-*' 2>&1 | tee fbc.txt
Then send us the fbc.txt file, especially if you get a failure.
This will really maximize your chances of getting the bug fixed
quickly.
- Try to find a reliable way to reproduce the problem, and tell us.
- Boot with drm.debug=0xe, reproduce the problem, then send us the
dmesg file.
v2: Don't enable by default on SKL.
Signed-off-by: Paulo Zanoni <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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This is a manual revert of
commit 7a10dfa638be26669f0987b6a21a65e6b39356b2
Author: Daniel Vetter <[email protected]>
Date: Tue Apr 1 09:33:47 2014 +0200
drm/i915: Add debug module option for VTd validation
as no users have appeared.
Reviewed-by: Daniel Vetter <[email protected]>
Signed-off-by: Jani Nikula <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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We've given write permissions to dynamically change some module
parameters through /sys/module/i915/parameters although they only
support setting on module load. Fix the permissions.
Reviewed-by: Daniel Vetter <[email protected]>
Signed-off-by: Jani Nikula <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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The bpp value which is used while calulating the txbyteclkhs values
should be wrt the pixel format value. Currently bpp is coming
from pipe config to calculate txbyteclkhs. Fix it in this patch.
V2: dsi_pixel_format_bpp is used to retrieve the bpp from pixel_format
[Review: Jani]
Signed-off-by: Deepak M <[email protected]>
Signed-off-by: Yogesh Mohan Marimuthu <[email protected]>
Signed-off-by: Ramalingam C <[email protected]>
Tested-by: Mika Kahola <[email protected]> # BYT
Signed-off-by: Jani Nikula <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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We need to use post-decrement to get the dma_map_page undone also for
i==0, and to avoid some very unpleasant behaviour if dma_map_page
failed already at i==0.
Signed-off-by: Rasmus Villemoes <[email protected]>
Reviewed-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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Because we record connector_mask using 1 << drm_connector_index now
the connector_mask should stay the same even when other connectors
are removed. This was not the case with MST, in that case when removing
a connector all other connectors may change their index.
This is fixed by waiting until the first get_connector_state to allocate
connector_state, and force reallocation when state is too small.
As a side effect connector arrays no longer have to be preallocated,
and can be allocated on first use which means a less allocations in
the page flip only path.
Changes since v1:
- Whitespace. (Ville)
- Call ida_remove when destroying the connector. (Ville)
- u32 alloc -> int. (Ville)
Fixes: 14de6c44d149 ("drm/atomic: Remove drm_atomic_connectors_for_crtc.")
Signed-off-by: Maarten Lankhorst <[email protected]>
Cc: Ville Syrjälä <[email protected]>
Reviewed-by: Lyude <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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https://github.com/markyzq/kernel-drm-rockchip into drm-next
add Innosilicon HDMI support.
* 'drm-rockchip-next-2016-02-18' of https://github.com/markyzq/kernel-drm-rockchip:
dt-bindings: add document for Innosilicon HDMI on Rockchip platform
drm/rockchip: hdmi: add Innosilicon HDMI support
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This pull request brings in overlay plane support for vc4.
* tag 'drm-vc4-next-2016-02-17' of github.com:anholt/linux:
drm/vc4: Add support for YUV planes.
drm/vc4: Add support a few more RGB display plane formats.
drm/vc4: Add support for scaling of display planes.
drm/vc4: Fix which value is being used for source image size.
drm/vc4: Add more display planes to each CRTC.
drm/vc4: Make the CRTCs cooperate on allocating display lists.
drm/vc4: Add a proper short-circut path for legacy cursor updates.
drm/vc4: Move the plane clipping/scaling setup to a separate function.
drm/vc4: Add missing __iomem annotation to hw_dlist.
drm/vc4: Improve comments on vc4_plane_state members.
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This pull request fixes GPU reset (which was disabled shortly after
V3D integration due to build breakage) and waits for idle in the
presence of signals (which X likes to do a lot).
* tag 'drm-vc4-fixes-2016-02-17' of github.com:anholt/linux:
drm/vc4: Use runtime PM to power cycle the device when the GPU hangs.
drm/vc4: Enable runtime PM.
drm/vc4: Fix spurious GPU resets due to BO reuse.
drm/vc4: Drop error message on seqno wait timeouts.
drm/vc4: Fix -ERESTARTSYS error return from BO waits.
drm/vc4: Return an ERR_PTR from BO creation instead of NULL.
drm/vc4: Fix the clear color for the first tile rendered.
drm/vc4: Validate that WAIT_BO padding is cleared.
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into drm-fixes
Just two small fixes in the ttm_tt_populate error handling; one for radeon,
one for amdgpu.
* 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon: use post-decrement in error handling
drm/amdgpu: use post-decrement in error handling
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git://anongit.freedesktop.org/drm-intel into drm-fixes
single g4x hpd fix.
* tag 'drm-intel-fixes-2016-02-18' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Fix hpd live status bits for g4x
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into drm-next
First radeon and amdgpu pull request for 4.6. Highlights:
- ACP support for APUs with i2s audio
- CS ioctl optimizations
- GPU scheduler optimizations
- GPUVM optimizations
- Initial GPU reset support (not enabled yet)
- New powerplay sysfs interface for manually selecting clocks
- Powerplay fixes
- Virtualization fixes
- Removal of hw semaphore support
- Lots of other misc fixes and cleanups
* 'drm-next-4.6' of git://people.freedesktop.org/~agd5f/linux: (118 commits)
drm/amdgpu: Don't call interval_tree_remove in amdgpu_mn_destroy
drm/amdgpu: Fix race condition in amdgpu_mn_unregister
drm/amdgpu: cleanup gem init/finit
drm/amdgpu: rework GEM info printing
drm/amdgpu: print the GPU offset as well in gem_info
drm/amdgpu: optionally print the pin count in gem_info as well
drm/amdgpu: print the BO size only once in amdgpu_gem_info
drm/amdgpu: print pid as integer
drm/amdgpu: remove page flip work queue v3
drm/amdgpu: stop blocking for page filp fences
drm/amdgpu: stop calling amdgpu_gpu_reset from the flip code
drm/amdgpu: remove fence reset detection leftovers
drm/amdgpu: Fix race condition in MMU notifier release
drm/radeon: Fix WARN_ON if DRM_DP_AUX_CHARDEV is enabled
drm/amdgpu/vi: move uvd tiling config setup into uvd code
drm/amdgpu/vi: move sdma tiling config setup into sdma code
drm/amdgpu/cik: move uvd tiling config setup into uvd code
drm/amdgpu/cik: move sdma tiling config setup into sdma code
drm/amdgpu/gfx7: rework gpu_init()
drm/amdgpu/gfx: clean up harvest configuration (v2)
...
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git://anongit.freedesktop.org/drm-intel into drm-next
Misc stuff all over:
- more mode_fixup removal from Carlos, there's another final pile still
left.
- final bits of vgaswitcheroo from Lukas for apple gmux, we're still
discussing an api cleanup patch to make it a bit more abuse-safe as a
follow-up
- dp aux interface for userspace for tools&tests from Rafael Antognolli
- actual interface parts for dma-buf flushing for userspace mmap
- few small bits all over
- vgaswitcheroo support for apple gmux from Lukas Wunner
- checks for ->mode_fixup in non-atomic helpers from Carlos Palminha, plus
removing dummy funcs from drivers. Carlos promised to follow up with
more, since there's lots more silly dummy functions around.
- dma-buf patches from Tiago, except the ioctl itself (that needed a
respin to address review from David Herrmann)
- encoder mask for atomic from Maarten
- bunch of random things all over.
* tag 'topic/drm-misc-2016-02-18' of git://anongit.freedesktop.org/drm-intel: (57 commits)
drm/udl: Use module_usb_driver
drm: fixes crct set_mode when crtc mode_fixup is null.
drm/tilcdc: removed optional dummy encoder mode_fixup function.
drm/sti: removed optional dummy encoder mode_fixup function.
drm/rockchip: removed optional dummy encoder mode_fixup function.
drm/qxl: removed optional dummy encoder mode_fixup function.
drm/mgag200: removed optional dummy encoder mode_fixup function.
drm/msm/mdp: removed optional dummy encoder mode_fixup function.
drm/imx: removed optional dummy encoder mode_fixup function.
drm/gma500: removed optional dummy encoder mode_fixup function.
drm/radeon: removed optional dummy encoder mode_fixup function.
drm/cirrus: removed optional dummy encoder mode_fixup function.
drm/bochs: removed optional dummy encoder mode_fixup function.
drm/ast: removed optional dummy encoder mode_fixup function.
drm/amdgpu: removed optional dummy encoder mode_fixup function.
drm/exynos: removed optional dummy encoder mode_fixup function.
drm/udl: removed optional dummy encoder mode_fixup function.
drm/virtio: removed optional dummy encoder mode_fixup function.
drm/fb_helper: Use add_one_connector in add_all_connectors.
drm/fb_helper: Use correct allocation count for arrays.
...
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DSP CLK_GATE registers are specific to BYT and CHT.
Avoid programming the same for BXT platform.
v2: Rebased on latest drm nightly branch.
v3: Fixed Jani's review comments
Signed-off-by: Uma Shankar <[email protected]>
Signed-off-by: Jani Nikula <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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The assumption when adding the intel_display_power_is_enabled() checks
was that if it returns success the power can't be turned off afterwards
during the HW access, which is guaranteed by modeset locks. This isn't
always true, so make sure we hold a dedicated reference for the time of
the access.
Spotted-by: Mika Kuoppala <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93441
CC: Chris Wilson <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Reviewed-by: Mika Kuoppala <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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We have an open coded loop which tries to see if the encoder has any
connectors linked to it. Let's extract that to a helper similar to
intel_crtc_has_encoders().
Signed-off-by: Ville Syrjälä <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
Reviewed-by: Daniel Vetter <[email protected]>
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This is another step in removing legacy state.
Signed-off-by: Maarten Lankhorst <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/1455697119-31416-6-git-send-email-maarten.lankhorst@linux.intel.com
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With the conversion to atomic only on/off are still supported.
The rest is mapped to one of those, and when enable is called
DPMS_ON should be true.
Signed-off-by: Maarten Lankhorst <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/1455697119-31416-5-git-send-email-maarten.lankhorst@linux.intel.com
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Signed-off-by: Maarten Lankhorst <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/1455697119-31416-4-git-send-email-maarten.lankhorst@linux.intel.com
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Signed-off-by: Maarten Lankhorst <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/1455697119-31416-3-git-send-email-maarten.lankhorst@linux.intel.com
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Instead of restoring dpms and a flag for whether a temp fb is allocated duplicate
an atomic state before the new state is committed, and commit it the old state
in intel_release_load_detect_pipe.
Changes since v1:
- Use a real atomic state. (Ville)
Changes since v2:
- Do not preserve shared_dpll any more, no need to do so. (Ville)
Signed-off-by: Maarten Lankhorst <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/1455697119-31416-2-git-send-email-maarten.lankhorst@linux.intel.com
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The Innosilicon HDMI is a low power HDMI 1.4 transmitter
IP, and it have been integrated on some rockchip CPUs
(like RK3036, RK312x).
Signed-off-by: Yakir Yang <[email protected]>
Tested-by: Heiko Stuebner <[email protected]>
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rbtree_postorder_for_each_entry_safe can skip over some entries if
the tree is rebalanced in interval_tree_remove. interval_tree_remove
is also redundant when the tree is just about to be freed.
Signed-off-by: Felix Kuehling <[email protected]>
Reviewed-by: Christian König <[email protected]>
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Exchange locking order of adev->mn_lock and mm_sem, so that
rmn->mm->mmap_sem can be taken safely, protected by adev->mn_lock,
when amdgpu_mn_destroy runs concurrently.
Signed-off-by: Felix Kuehling <[email protected]>
Reviewed-by: Christian König <[email protected]>
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With a reliable frontbuffer tracking and all instability corner cases
on Haswell and Broadwell solved let's re-enabled PSR by default on
these platforms.
In case a new issue is found and PSR is the main suspect, please check
if i915.enable_psr=0 really makes your problem go away. If this is the case
PSR is the culprit so after that please check if i915.enable_psr=2
or i915.enable_psr=3 solves your issue and please let us know.
There are many panels out there and not all implementations apparently
work as we would expect.
In case you needed to force it on standby or disabled or in case of any
PSR related bug please report it at bugs.freedesktop.org.
In a bugzilla entry for PSR is desirable:
- dmesg (drm.debug=0xe)
- output of /sys/kernel/debug/dri/0/i915_edp_psr_status
- Platform information. Vendor, model, id, pci id.
- Graphical environment: Gnome, KDE, openbox, etc...
- Details how to reproduce.
- Also good if you could run PSR test cases of Intel-gpu-tools
- Please mention if forcing main link standby or main link off helps you.
There are Intel-gpu-tools test cases that can be helpful to
determine if PSR is working as expected:
kms_psr_sink_crc and kms_psr_frontbuffer_tracking.
Cc: Paulo Zanoni <[email protected]>
Signed-off-by: Rodrigo Vivi <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Rodrigo Vivi <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
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With a reliable frontbuffer tracking and all instability corner cases
solved for this platform let's re-enabled PSR by default.
In case a new issue is found and PSR is the main suspect, please check
if i915.enable_psr=0 really makes your problem go away,
please report it at bugs.freedesktop.org.
In a bugzilla entry for PSR is desirable:
- dmesg (drm.debug=0xe)
- output of /sys/kernel/debug/dri/0/i915_edp_psr_status
- Platform information. Vendor, model, id, pci id.
- Graphical environment: Gnome, KDE, openbox, etc...
- Details how to reproduce.
- Also good if you could run PSR test cases of Intel-gpu-tools
- Please mention if forcing main link standby or main link off helps you.
There are Intel-gpu-tools test cases that can be helpful to
determine if PSR is working as expected:
kms_psr_sink_crc and kms_psr_frontbuffer_tracking.
Cc: Paulo Zanoni <[email protected]>
Signed-off-by: Rodrigo Vivi <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
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This will give us flexibility to enable PSR by default independently so
issues and corner cases in one platform won't affect others were we have
it working properly.
Cc: Paulo Zanoni <[email protected]>
Signed-off-by: Rodrigo Vivi <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
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Otherwise a pde_shift big enough to overflow a u32 will be truncated before
assignment
Note: We never asked for ranges spanning a 4G boundary, so this issue
doesn't cause a real problem.
Signed-off-by: Alan Cox <[email protected]>
[danvet: Add note why this isn't a real problem.]
Signed-off-by: Daniel Vetter <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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The assumption when adding the intel_display_power_is_enabled() checks
was that if it returns success the power can't be turned off afterwards
during the HW access, which is guaranteed by modeset locks. This isn't
always true, so make sure we hold a dedicated reference for the time of
the access.
Signed-off-by: Imre Deak <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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The assumption when adding the intel_display_power_is_enabled() checks
was that if it returns success the power can't be turned off afterwards
during the HW access, which is guaranteed by modeset locks. This isn't
always true, so make sure we hold a dedicated reference for the time of
the access.
Signed-off-by: Imre Deak <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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The assumption when adding the intel_display_power_is_enabled() checks
was that if it returns success the power can't be turned off afterwards
during the HW access, which is guaranteed by modeset locks. This isn't
always true, so make sure we hold a dedicated reference for the time of
the access.
Signed-off-by: Imre Deak <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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The assumption when adding the intel_display_power_is_enabled() checks
was that if it returns success the power can't be turned off afterwards
during the HW access, which is guaranteed by modeset locks. This isn't
always true, so make sure we hold a dedicated reference for the time of
the access.
Signed-off-by: Imre Deak <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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The assumption when adding the intel_display_power_is_enabled() checks
was that if it returns success the power can't be turned off afterwards
during the HW access, which is guaranteed by modeset locks. This isn't
always true, so make sure we hold a dedicated reference for the time of
the access.
While at it also add the missing reference around the HW access in
i915_interrupt_info().
v2:
- update the commit message mentioning that this also fixes the
HW access in the interrupt info debugfs entry (Daniel)
Signed-off-by: Imre Deak <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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