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2017-12-20drm/amd/display: Only blank DCN when we have set_blank implementationYue Hin Lau
Also rename timing_generator to optc Signed-off-by: Yue Hin Lau <Yuehin.Lau@amd.com> Reviewed-by: Eric Bernstein <Eric.Bernstein@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Put dcn_mi_registers with other structsEric Bernstein
Signed-off-by: Eric Bernstein <eric.bernstein@amd.com> Reviewed-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: hubp refactorYue Hin Lau
Signed-off-by: Yue Hin Lau <Yuehin.Lau@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: integrating optc pseudocodeYue Hin Lau
Signed-off-by: Yue Hin Lau <Yuehin.Lau@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Call validate_fbc should_enable_fbcHarry Wentland
validate_fbc never fails a modeset. It's simply used to decide whether to use FBC or not. Calling it validate_fbc might be confusing to some so rename it to should_enable_fbc. With that let's also remove the DC_STATUS return code and return bool and make enable_fbc a void function since we never check it's return value and probably never want to anyways. Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Roman Li <Roman.Li@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Clean up DCN cursor codeEric Bernstein
Signed-off-by: Eric Bernstein <eric.bernstein@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: fix 180 full screen pipe splitDmytro Laktyushkin
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: reprogram surface config on scaling changeEric Yang
When plane size changes, we need to reprogram surface pitch in addition to viewport and scaler. This change is a conservative way to make this happen. However it could be more optimized to move pitch programming into mem_program_viewport. Signed-off-by: Eric Yang <Eric.Yang2@amd.com> Reviewed-by: Andrew Jiang <Andrew.Jiang@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Remove dwbc from pipe_ctxEric Bernstein
Signed-off-by: Eric Bernstein <eric.bernstein@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Use the maximum link setting which EDP reported.Hugo Hu
Signed-off-by: Hugo Hu <hugo.hu@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Add hdr_supported flagYongqiang Sun
Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com> Reviewed-by: Anthony Koo <Anthony.Koo@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: fix global sync param retrieval when not pipe splittingDmytro Laktyushkin
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Update HUBPEric Bernstein
Signed-off-by: Eric Bernstein <eric.bernstein@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: fix rotated surface scalingDmytro Laktyushkin
This is a resubmit with the errors fixed Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: clean up dcn soc paramsDmytro Laktyushkin
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: dal 3.1.26Eric Yang
Signed-off-by: Eric Yang <Eric.Yang2@amd.com> Reviewed-by: Andrew Jiang <Andrew.Jiang@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Fix rehook MST display not light back onJerry (Fangzhi) Zuo
Original applied dm_restore_drm_connector_state() has got removed. Set link status to BAD before hotplug() event could trigger another modeset from userspace. The fix "Fix MST daisy chain SST not light up" commit makes so it is trying to create a stream prior to dc_sink. That makes dc_sink is not present in create_stream_for_sink(). Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com> Reviewed-by: Roman Li <Roman.Li@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Fix check for whether dmcu fw is runningAnthony Koo
Signed-off-by: Anthony Koo <Anthony.Koo@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Declare and share color space types for dcn'sVitaly Prosyak
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Do DC mode-change check after stream creationLeo (Sunpeng) Li
Do DC level mode change checks (via dc_stream_state) only when creating a new stream, as this check is uneccessary without a new dc_stream_state anyways. Doing so better demonstrates the intent of this mode-change check, in comparison to guarding it with the 'enable' flag. Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com> Reviewed-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Define BLNDGAM_CONFIG_STATUSVitaly Prosyak
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Don't spam debug log on long reg waitsHarry Wentland
Certain reg waits take up to a frame. Don't spam the log when this happens. Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Jordan Lazare <Jordan.Lazare@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Error print when ATOM BIOS implementation is missingHarry Wentland
We fail apply_ctx_to_hw when crtc_source_select is missing. This isn't really helpful at this point. It would aid ASIC bringup if we log an error when we can't find the implementation for the ATOM version. Do the same for all other function points in the command table that do a NULL check before being called. Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Roman Li <Roman.Li@amd.com> Reviewed-by: Jordan Lazare <Jordan.Lazare@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Remove dead enable_plane function definition and callHarry Wentland
Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Jordan Lazare <Jordan.Lazare@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/display: Print type if we get wrong ObjectID from biosHarry Wentland
We've seen a bunch of issues where we can't get the connector from vbios for what we think should be a valid connector id. Print some more info when this happens. Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/i915/cfl: Adding more Coffee Lake PCI IDs.Rodrigo Vivi
Spec has been updated with more reserved IDs for existent SKUs. Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Anusha Srivatsa <anusha.srivatsa@intel.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: Anuj Phogat <anuj.phogat@gmail.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by: Anusha Srivatsa<anusha.srivatsa@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171220182919.21108-1-rodrigo.vivi@intel.com
2017-12-20drm/radeon: Remove KFD_CIK_SDMA_QUEUE_OFFSETMichel Dänzer
Leftover from recently removed amdkfd support. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Michel Dänzer <michel@daenzer.net> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20Revert "drm/radeon: reduce number of free VMIDs and pipes in KV"Michel Dänzer
This reverts the remaining changes of commit 62a7b7fbd08ef745bb51e8728e89125a0ba6327e, because radeon doesn't support amdkfd anymore. The number of VMIDs was already changed back when amdkfd support was removed. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Michel Dänzer <michel@daenzer.net> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20Revert "drm/radeon/cik: Don't touch int of pipes 1-7"Michel Dänzer
This reverts commit 28b57b856b635ea0d44f1281e2efdc963c100ea3. radeon doesn't support amdkfd anymore, so the latter doesn't set up interrupts for pipes 1-7. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Michel Dänzer <michel@daenzer.net> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20Revert "drm/radeon: Report doorbell configuration to amdkfd"Michel Dänzer
This reverts commit ebff8453d3a57a2405c4d96d9f9c4f4acc7d4d79. Unused since amdkfd is no longer supported with radeon. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Michel Dänzer <michel@daenzer.net> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20Revert "drm/radeon: adding synchronization for GRBM GFX"Michel Dänzer
This reverts commit 1c0a46255f8d7daf5b601668836e185fd1294e94. Not needed anymore, since amdkfd is no longer supported with radeon. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Michel Dänzer <michel@daenzer.net> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/pp: Implement force_dpm_level on RvRex Zhu
user can change dpm level on Rv through sysfs v3: add smu version check v2: fix no return statement Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/pp: Get and save Rv smu versionRex Zhu
The smu firmware is loaded by the sbios on APUs, so query it from the smu and save the smu fw version info that is reported to userspace. Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/pp: update smu_version value for CI/VIRex Zhu
Set the new common smu firmware version for smu7 parts (CI and VI). Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/amd/pp: Move smu_version to common codeRex Zhu
Move the smu_version to struct hwmgr, so it can be shared by other asics. Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-20drm/framebuffer: Print task that allocated the fb in debug info.Maarten Lankhorst
This is is very useful to finding sources of leaked framebufers. The fbcon fb is annotated with [fbcon], to give it a better name than kworker. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171220093545.613-3-maarten.lankhorst@linux.intel.com Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-12-20drm/fb-helper: Add drm_fb_helper_defio_init()Noralf Trønnes
Add helper for initializing fbdev deferred I/O. The cleanup could have happened in drm_fb_helper_fini(), but that would have required me to set fb_info->fbdefio to NULL in a couple of drivers before they call _fini() to avoid double defio cleanup. The problem is that one of those is vboxvideo which lives in Greg's staging tree. So I put the cleanup in drm_fb_helper_fbdev_teardown(), not perfect but not that bad either. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20171215175119.36181-6-noralf@tronnes.org
2017-12-20drm/fb-helper: Update DOC with new helpersNoralf Trønnes
Promote new helpers for dealing with fbdev emulation. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20171215175119.36181-5-noralf@tronnes.org
2017-12-20drm/docs: Add todo entry for drm_fb_helper_fbdev_setup()Noralf Trønnes
Add entry for conversion of drivers to new helpers. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20171215175119.36181-4-noralf@tronnes.org
2017-12-20drm/fb-helper: Add drm_fb_helper_fbdev_setup/teardown()Noralf Trønnes
Add helpers to setup and teardown fbdev emulation. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20171215175119.36181-3-noralf@tronnes.org
2017-12-20drm/fb-helper: Set/clear dev->fb_helper in dummy init/finiNoralf Trønnes
Set dev->fb_helper even when fbdev emulation is compiled out, so drivers can use it to free the structure. Clear it for consistency. Fixes: 29ad20b22c8f ("drm: Add drm_device->fb_helper pointer") Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20171215175119.36181-2-noralf@tronnes.org
2017-12-20drm/i915: Tidy up GEM_TRACE around execlistsChris Wilson
Looking at the coordination of resets with the submission of execlists, it will be useful to have a GEM_TRACE for when we issue the reset. Whilst there tidy up the other GEM_TRACE to always include the engine name, and be careful not to trust any pointers prior to asserts. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171220090626.31643-1-chris@chris-wilson.co.uk
2017-12-20drm/i915/psr: Fix register name mess up.Dhinakaran Pandiyan
Commit 77affa31722b ("drm/i915/psr: Fix compiler warnings for hsw_psr_disable()") swapped status and control registers while fixing indentation. The _ctl at the end of the status register name must have to led to this. Fixes: 77affa31722b ("drm/i915/psr: Fix compiler warnings for hsw_psr_disable()") References: https://www.mrc-cbu.cam.ac.uk/people/matt.davis/cmabridge/ Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171220043520.2599-1-dhinakaran.pandiyan@intel.com Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2017-12-19drm/amdgpu: use defines for mmBIF_IOV_FUNC_IDENTIFIER fieldsAlex Deucher
Rather than magic numbers. Reviewed-by: Xiangliang Yu <Xiangliang.Yu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-19drm/amdgpu: only check mmBIF_IOV_FUNC_IDENTIFIER on tonga/fijiAlex Deucher
We only support SR-IOV on tonga/fiji. Don't check this register on other VI parts. Fixes: 048765ad5af7c89 (amdgpu: fix asic initialization for virtualized environments (v2)) Reviewed-by: Xiangliang Yu <Xiangliang.Yu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2017-12-19drm/i915: Avoid context dereference inside execlists_submission_taskletChris Wilson
A lesson that has to be relearnt over and over again is that the request does not keep a reference to the context and so we cannot freely dereference the context from inside the execlists_submission_tasklet. In particular, we try to do so in the new GEM_TRACE() so convert those over to the port->context_id we keep for GEM debugging. This means the tracing now depends on DRM_I915_GEM_DEBUG. Fixes: bccd3b831185 ("drm/i915: Use trace_printk to provide a death rattle for GEM") References: https://bugs.freedesktop.org/show_bug.cgi?id=104066 References: https://bugs.freedesktop.org/show_bug.cgi?id=104162 References: https://bugs.freedesktop.org/show_bug.cgi?id=104242 References: https://bugs.freedesktop.org/show_bug.cgi?id=104310 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Michel Thierry <michel.thierry@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171219220916.30882-1-chris@chris-wilson.co.uk
2017-12-19drm/i915: Remove pointer indirection for hangcheck_state localChris Wilson
Use the local on-stack struct directly rather than hide it behind a pointer. This should be both clearer for the reader and the compiler (we rely on the compiler seeing through the functions to spot uninitialized uses of the local). Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171219130948.6282-1-chris@chris-wilson.co.uk
2017-12-19drm/i915: Show if we consider the engine is idle in the GPU error stateChris Wilson
Useful for verifying our bookkeeper when we encounter is knowing whether we think the engine is idle at the time of the GPU hang. References: https://bugs.freedesktop.org/show_bug.cgi?id=104305 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171219131419.13117-1-chris@chris-wilson.co.uk
2017-12-19drm/i915: Implement WaDisableEarlyEOT.Rafael Antognolli
There seems to be another clock gating issue which the workaround is described as: "WA: Set 0xE4F0[1] = 1 to disable Early EOT of thread." Signed-off-by: Rafael Antognolli <rafael.antognolli@intel.com> Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171216001117.14232-2-rafael.antognolli@intel.com
2017-12-19drm/i915: Implement WaDisableVFclkgate.Rafael Antognolli
This workaround supposedly fixes some hangs in the VF unit. Signed-off-by: Rafael Antognolli <rafael.antognolli@intel.com> Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171216001117.14232-1-rafael.antognolli@intel.com