- 24 Jul, 2018 1 commit
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Chris Wilson authored
A reasonably common operation is to pin the map of the vma alongside the vma itself for the lifetime of the vma, and so release both pins at the same time as destroying the vma. It is common enough to pull into the release function, making that central function more attractive to a couple of other callsites. The continual ulterior motive is to sweep over errors on module load aborting... Testcase: igt/drv_module_reload/basic-reload-inject Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Cc: Michał Winiarski <michal.winiarski@intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Reviewed-by:
Michał Winiarski <michal.winiarski@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180721125037.20127-1-chris@chris-wilson.co.uk
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- 23 Jul, 2018 4 commits
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Nathan Ciobanu authored
Changes the type and renames the max_vswing_tries variable which was declared as an integer but used as a boolean making it easy to be confused with a counter. Changes in v2: - updated the title and commit message - left the loop exit point in place v3: fix typo in title v4: renamed max_vswing to max_vswing_reached (Ville) Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Marc Herbert <marc.herbert@intel.com> Signed-off-by:Nathan Ciobanu <nathan.d.ciobanu@linux.intel.com> Reviewed-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by:
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Nathan Ciobanu authored
Limit the link training clock recovery loop to 10 attempts at LANEx_CR_DONE per DP 1.4 spec section 3.5.1.2.2 and 80 attempts for pre-DP 1.4 (4 voltage levels x 4 preemphasis levels x x 5 identical voltages tries). Some faulty USB-C MST hubs can cause us to get stuck in this loop indefinitely requesting something like: voltage swing: 0, pre-emphasis level: 2 voltage swing: 1, pre-emphasis level: 2 voltage swing: 0, pre-emphasis level: 3 over and over so max_vswing would never be reached, drm_dp_clock_recovery_ok() would never return true and voltage_tries would always get reset to 1. The driver sends those values to the hub but the hub keeps requesting new values every time. Changes in v2: - updated commit message (DK, Manasi) - defined DP_DP14_MAX_CR_TRIES (Marc) - made the loop iterate for max 10 times (Rodrigo, Marc) Changes in v3: - changed error message to use DP_DP14_MAX_CR_TRIES Changes in v4: - Updated the title to reflect the change - Updated the commit message - Added 80 attempts for pre-DP 1.4 devices Changes in v5: - Removed DP_DP14_MAX_CR_TRIES from drm v6: Updated comment to match kernel style (Rodrigo) Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Marc Herbert <marc.herbert@intel.com> Cc: Manasi Navare <manasi.d.navare@intel.com> Signed-off-by: -
Michał Winiarski authored
gvt_pin_guest_page extracted some of the gvt_dma_map_page functionality: commit 79e542f5 ("drm/i915/kvmgt: Support setting dma map for huge pages") And yet, part of it was reintroduced in: commit 39b4cbad ("drm/i915/kvmgt: Check the pfn got from vfio_pin_pages") Causing kvmgt part to no longer build. Let's remove it. Reported-by:
Tomasz Lis <tomasz.lis@intel.com> Signed-off-by:
Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by:
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Rodrigo Vivi authored
We need a backmerge to get DP_DPCD_REV_14 before we push other i915 changes to dinq that could break compilation. Signed-off-by:
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- 20 Jul, 2018 9 commits
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Anusha Srivatsa authored
This patch fixes the commit - <2efbb2f0> ("i915/dp/dsc: Add DSC PPS register definitions"), which did not have _MMIO() for DSCA and DSCC. v2: Fix typos. (manasi) v3: Change the commit message (Rodrigo) Cc: Rodrigi Vivi <rodrigo.vivi@intel.com> Cc: Manasi Navare <manasi.d.navare@intel.com> Signed-off-by:
Anusha Srivatsa <anusha.srivatsa@intel.com> Reviewed-by:
Manasi Navare <manasi.d.navare@intel.com> Signed-off-by:
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Rodrigo Vivi authored
First of all don't try to read dpcd if PSR is not even supported. But also, if read failed return -EIO instead of reporting via a backchannel. v2: fix dev_priv: At this level m->private is the connector. (CI/DK) don't convert dpcd read errors to EIO. (DK) Fixes: 5b7b3086 ("drm/i915/psr: Split sink status into a separate debugfs node") Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: José Roberto de Souza <jose.souza@intel.com> Signed-off-by:Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180720003155.16290-1-rodrigo.vivi@intel.com
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Rodrigo Vivi authored
Just a small clean-up with no functional change, only removing a variable that is never actually used. Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Signed-off-by:
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Chris Wilson authored
Not all chipsets have an internal buffer delaying the visibility of writes via the GGTT being visible by other physical paths, but we use a very heavy workaround for all. We only need to apply that workarounds to the chipsets we know suffer from the delay and the resulting coherency issue. Similarly, the same inconsistent coherency fouls up our ABI promise that a write into a mmap_gtt is immediately visible to others. Since the HW has made that a lie, let userspace know when that contract is broken. (Not that userspace would want to use mmap_gtt on those chipsets for other performance reasons...) Testcase: igt/drv_selftest/live_coherency Testcase: igt/gem_mmap_gtt/coherency Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100587Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180720101910.11153-1-chris@chris-wilson.co.uk
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Chris Wilson authored
Another step in the drv_module_reload fault-injection saga, is that we try to disable the guc twice. Probably. It's a little unclear exactly what is going on in the unload sequence that catches us out, so for the time being suppress the assertion to get the test re-enabled. Testcase: igt/drv_module_reload/basic-reload-inject Signed-off-by:
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git://people.freedesktop.org/~agd5f/linuxDave Airlie authored
More features for 4.19: - Map processes to vmids for debugging GPUVM faults - Raven gfxoff fixes - Initial gfxoff support for vega12 - Use defines for interrupt sources rather than magic numbers - DC aux fixes - Finish DC logging TODO - Add more DC debugfs interfaces for conformance testing - Add CRC support for DCN - Scheduler rework in preparation for load balancing - Unify common smu9 code - Clean up UVD instancing support - ttm cleanups - Misc fixes and cleanups Signed-off-by:
Dave Airlie <airlied@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180719194001.3488-1-alexander.deucher@amd.com
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git://anongit.freedesktop.org/drm/drm-intelDave Airlie authored
On GEM side: - GuC related fixes (Chris, Michal) - GTT read-only pages support (Jon, Chris) - More selftests fixes (Chris) - More GPU reset improvements (Chris) - Flush caches after GGTT writes (Chris) - Handle recursive shrinker for vma->last_active allocation (Chris) - Other execlists fixes (Chris) On Display side: - GLK HDMI fix (Clint) - Rework and cleanup around HPD pin (Ville) - Preparation work for Display Stream Compression support coming on ICL (Anusha) - Nuke LVDS lid notification (Ville) - Assume eDP is always connected (Ville) - Kill intel panel detection (Ville) Signed-off-by:
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git://anongit.freedesktop.org/drm/drm-miscDave Airlie authored
drm-misc-next for 4.19: Core Changes: - add support for DisplayPort CEC-Tunneling-over-AUX (Hans Verkuil) - more doc updates (Daniel Vetter) - fourcc: Add is_yuv field to drm_format_info (Ayan Kumar Halder) - dma-buf: correctly place BUG_ON (Michel Dänzer) Driver Changes: - more vkms support(Rodrigo Siqueira) - many fixes and small improments to all drivers Signed-off-by:
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git://github.com/skeggsb/linuxDave Airlie authored
misc fixes and cleanups for next. Signed-off-by:
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- 19 Jul, 2018 21 commits
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Paulo Zanoni authored
Use the hardcoded tables provided by our spec. v2: - SSC stays disabled. - Use intel_port_is_tc(). Cc: Anusha Srivatsa <anusha.srivatsa@intel.com> Reviewed-by:
Paulo Zanoni <paulo.r.zanoni@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180711215909.23945-2-paulo.r.zanoni@intel.com
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Azhar Shaikh authored
On KBL, WHL RVPs, booting up with an external display connected, triggers below warning, when the BiOS brings up the external display too. This warning is not seen during hotplug. [ 3.615226] ------------[ cut here ]------------ [ 3.619829] plane 1A assertion failure (expected on, current off) [ 3.632039] WARNING: CPU: 2 PID: 354 at drivers/gpu/drm/i915/intel_display.c:1294 assert_plane+0x71/0xbb [ 3.633920] iwlwifi 0000:00:14.3: loaded firmware version 38.c0e03d94.0 op_mode iwlmvm [ 3.647157] Modules linked in: iwlwifi cfg80211 btusb btrtl btbcm btintel bluetooth ecdh_generic [ 3.647163] CPU: 2 PID: 354 Comm: frecon Not tainted 4.17.0-rc7-50176-g655af12d39c2 #3 [ 3.647165] Hardware name: Intel Corporation CoffeeLake Client Platform/WhiskeyLake U DDR4 ERB, BIOS CNLSFWR1.R00.X140.B00.1804040304 04/04/2018 [ 3.684509] RIP: 0010:assert_plane+0x71/0xbb [ 3.764451] Call Trace: [ 3.766888] intel_atomic_commit_tail+0xa97/0xb77 [ 3.771569] intel_atomic_commit+0x26a/0x279 [ 3.771572] drm_atomic_helper_set_config+0x5c/0x76 [ 3.780670] __drm_mode_set_config_internal+0x66/0x109 [ 3.780672] drm_mode_setcrtc+0x4c9/0x5cc [ 3.780674] ? drm_mode_getcrtc+0x162/0x162 [ 3.789774] ? drm_mode_getcrtc+0x162/0x162 [ 3.798108] drm_ioctl_kernel+0x8d/0xe4 [ 3.801926] drm_ioctl+0x27d/0x368 [ 3.805311] ? drm_mode_getcrtc+0x162/0x162 [ 3.805314] ? selinux_file_ioctl+0x14e/0x199 [ 3.805317] vfs_ioctl+0x21/0x2f [ 3.813812] do_vfs_ioctl+0x491/0x4b4 [ 3.813813] ? security_file_ioctl+0x37/0x4b [ 3.813816] ksys_ioctl+0x55/0x75 [ 3.820672] __x64_sys_ioctl+0x1a/0x1e [ 3.820674] do_syscall_64+0x51/0x5f [ 3.820678] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 3.828221] RIP: 0033:0x7b5e04953967 [ 3.835504] RSP: 002b:00007fff2eafb6f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 3.835505] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007b5e04953967 [ 3.835505] RDX: 00007fff2eafb730 RSI: 00000000c06864a2 RDI: 000000000000000f [ 3.835506] RBP: 00007fff2eafb720 R08: 0000000000000000 R09: 0000000000000000 [ 3.835507] R10: 0000000000000070 R11: 0000000000000246 R12: 000000000000000f [ 3.879988] R13: 000056bc9dd7d210 R14: 00007fff2eafb730 R15: 00000000c06864a2 [ 3.887081] Code: 48 c7 c7 06 71 a5 be 84 c0 48 c7 c2 06 fd a3 be 48 89 f9 48 0f 44 ca 84 db 48 0f 45 d7 48 c7 c7 df d3 a4 be 31 c0 e8 af a0 c0 ff <0f> 0b eb 2b 48 c7 c7 06 fd a3 be 84 c0 48 c7 c2 06 71 a5 be 48 [ 3.905845] WARNING: CPU: 2 PID: 354 at drivers/gpu/drm/i915/intel_display.c:1294 assert_plane+0x71/0xbb [ 3.920964] ---[ end trace dac692f4ac46391a ]--- The warning is seen when mode_setcrtc() is called for pipeB during bootup and before we get a mode_setcrtc() for pipeA, while doing update_crtcs() in intel_atomic_commit_tail(). Now since, plane1A is still active after commit, update_crtcs() is done for pipeA and eventually update_plane() for plane1A. intel_plane_state->ctl for plane1A is not updated since set_modecrtc() is called for pipeB. So intel_plane_state->ctl for plane 1A will be 0x0. So doing an update_plane() for plane1A, will result in clearing PLANE_CTL_ENABLE bit, and hence the warning. To fix this warning, force all active planes to recompute their states in probe. Changes in v8: - Actually add Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Changes in v7: - Move call to intel_initial_commit() after sanitize_watermarks() Otherwise the plane update will still consult potentially bogus watermarks we read out from the hardware. (Ville) - Carry Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> from v6 Changes in v6: - Handle EDEADLK for drm_atomic_get_crtc_state() and drm_atomic_add_affected_planes() - Remove optimization of calling intel_initial_commit() only when there is more than one active pipe in probe. - Avoid using intel_ types. Changes in v5: - Drop drm_modeset_lock_all_ctx() since locks will be taken later. Changes in v4: - Handle locking in intel_initial_commit() - Move the for loop inside intel_initial_commit() so that drm_atomic_commit() is called only once - Call intel_initial_commit() only for more than one active crtc on boot. - Save the return value of intel_initial_commit() and print a message in case of an error Changes in v3: - Add comments Changes in v2: - Force all planes to recompute their states.(Ville Syrjälä) - Update the commit message Signed-off-by:
Azhar Shaikh <azhar.shaikh@intel.com> Reviewed-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Christian König authored
The whole handle, filp and entity handling is superfluous here. We should have reviewed that more thoughtfully. It looks like somebody just made the code instance aware without knowing the background. v2: fix one more missed case in amdgpu_uvd_suspend Reviewed-by:
Leo Liu <leo.liu@amd.com> Signed-off-by:
Christian König <christian.koenig@amd.com> Acked-by:
Chunming Zhou <david1.zhou@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com>
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Christian König authored
Not sure what that was every used for, but now it is completely unused. Reviewed-by:
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Michel Dänzer authored
Allowing CONFIG_DRM_AMD_DC_DCN1_0 to be disabled on X86 was an opportunity for display with Raven Ridge accidentally not working. Reviewed-by:
Harry Wentland <harry.wentland@amd.com> Signed-off-by:
Michel Dänzer <michel.daenzer@amd.com> Signed-off-by:
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Evan Quan authored
The 'result' is not initialized correctly. It causes the API return an error code even on success. Signed-off-by:
Evan Quan <evan.quan@amd.com> Acked-by:
Huang Rui <ray.huang@amd.com> Signed-off-by:
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Alex Deucher authored
Use the newly added irq source defines rather than magic numbers for smu7 thermal interrupts. Rewiewed-by:
Rex Zhu <rezhu@amd.com> Signed-off-by:
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Chris Wilson authored
We believe we have all the kinks worked out, even for the early Valleyview devices, for whom we currently disable all ppgtt. References: 62942ed7 ("drm/i915/vlv: disable PPGTT on early revs v3") Signed-off-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Acked-by:
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Chris Wilson authored
We should we have all the kinks worked out and full-ppgtt now works reliably on gen7 (Ivybridge, Valleyview/Baytrail and Haswell). If we can let userspace have full control over their own ppgtt, it makes softpinning far more effective, in turn making GPU dispatch far more efficient by virtue of better mm segregation. On the other hand, switching over to a different GTT for every client does incur noticeable overhead, but only for very lightweight tasks. Signed-off-by:
Kenneth Graunke <kenneth@whitecape.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180717095751.1034-1-chris@chris-wilson.co.uk
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Rodrigo Vivi authored
Signed-off-by: -
Ville Syrjälä authored
With neither LVDS or eDP no longer using intel_panel_detect() we can kill it, and the accompanying modparam. Signed-off-by:
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Ville Syrjälä authored
We never registered any kind of lid notifier for eDP, so looking at the lid status is pretty much bonkers. Let's just consider eDP always connected instead. Signed-off-by:
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Ville Syrjälä authored
We broke the LVDS notifier resume thing in (presumably) commit e2c8b870 ("drm/i915: Use atomic helpers for suspend, v2.") as we no longer duplicate the current state in the LVDS notifier and thus we never resume it properly either. Instead of trying to fix it again let's just kill off the lid notifier entirely. None of the machines tested thus far have apparently needed it. Originally the lid notifier was added to work around cases where the VBIOS was clobbering some of the hardware state behind the driver's back, mostly on Thinkpads. We now have a few report of Thinkpads working just fine without the notifier. So maybe it was misdiagnosed originally, or something else has changed (ACPI video stuff perhaps?). If we do end up finding a machine where the VBIOS is still causing problems I would suggest that we first try setting various bits in the VBIOS scratch registers. There are several to choose from that may instruct the VBIOS to steer clear. With the notifier gone we'll also stop looking at the panel status in ->detect(). v2: Nuke enum modeset_restore (Rodrigo) Cc: stable@vger.kernel.org Cc: Wolfgang Draxinger <wdraxinger.maillist@draxit.de> Cc: Vito Caputo <vcaputo@pengaru.com> Cc: kitsunyan <kitsunyan@airmail.cc> Cc: Joonas Saarinen <jza@saunalahti.fi> Tested-by: Vito Caputo <vcaputo@pengaru.com> # Thinkapd X61s Tested-by: kitsunyan <kitsunyan@airmail.cc> # ThinkPad X200 Tested-by: Joonas Saarinen <jza@saunalahti.fi> # Fujitsu Siemens U9210 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105902 References: https://lists.freedesktop.org/archives/intel-gfx/2018-June/169315.html References: https://bugs.freedesktop.org/show_bug.cgi?id=21230 Fixes: e2c8b870 ("drm/i915: Use atomic helpers for suspend, v2.") Signed-off-by:
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Chris Wilson authored
There's a race between idling the engine and finishing off the last tasklet (as we may kick the tasklets after declaring an individual engine idle). However, since we do not need to access the device until we try to submit to the ELSP register (processing the CSB just requires normal CPU access to the HWSP, and when idle we should not need to submit!) we can defer the assertion unto that point. The assertion is still useful as it does verify that we do hold the longterm GT wakeref taken from request allocation until request completion. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107274 Fixes: 9512f985 ("drm/i915/execlists: Direct submission of new requests (avoid tasklet/ksoftirqd)") Signed-off-by:
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Chris Wilson authored
If we call into the shrinker for direct relcaim inside kmalloc, it will retire the requests. If we retire the vma->last_active while processing a new i915_vma_move_to_active() we can upset the delicate bookkeeping required for the cache. After the possible invocation of the shrinker, we need to double check the vma->last_active is still valid. Fixes: 8b293eb5 ("drm/i915: Track the last-active inside the i915_vma") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105600#c39Signed-off-by:
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Chris Wilson authored
We make a decision at module load whether to use the GuC backend or not, but lose that setup across set-wedge. Currently, the guc doesn't override the engine->set_default_submission hook letting execlists sneak back in temporarily on unwedging leading to an unbalanced park/unpark. v2: Remove comment about switching back temporarily to execlists on guc_submission_disable(). We currently only call disable on shutdown, and plan to also call disable before suspend and reset, in which case we will either restore guc submission or mark the driver as wedged, making the reset back to execlists pointless. v3: Move reset.prepare across Fixes: 63572937 ("drm/i915/execlists: Flush pending preemption events during reset") Testcase: igt/drv_module_reload/basic-reload-inject Testcase: igt/gem_eio Signed-off-by:
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Ben Skeggs authored
Workaround for issues seen on systems with large amounts of RAM, caused by display not supporting the same physical address limits as the other parts of the GPU. Signed-off-by:Ben Skeggs <bskeggs@redhat.com>
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Anusha Srivatsa authored
RC model has these parameters that correspond with each of 15 ranges of RC buffer threshold value in the RC model. The three elements are range_min_qp, range_max_qp and range_bpg_offset. Add the Rate Control range values for eDP/MIPI and DP case. The actual values are calculated usung a helper function. This patch adds the shifts to registers where the value will be written during atomic commit. v2: - Use _MMIO_PIPE() instead of _MMIO(_PICK()) (Manasi) - Combine shifts (Manasi) Cc: Jose Souza <jose.souza@intel.com> Cc: Jani Nikula <jani.nikula@intel.com> Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Cc: Manasi Navare <manasi.d.navare@intel.com> Signed-off-by:
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Anusha Srivatsa authored
Add register defines and shifts that control the RC buffer threshold between encoder and decoder for eDP/MIPI and DP cases. The actual values are calculated usung a helper function. This patch adds the shifts to registers where the value will be written during atomic commit. v2: - Use _MMIO_PIPE() instead of _MMIO_(_PICK()) (Manasi) - Combine shifts (Manasi) Cc: Jani Nikula <jani.nikula@intel.com> Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Cc: Manasi Navare <manasi.d.navare@intel.com> Signed-off-by:
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Anusha Srivatsa authored
Display Stream Compression(DSC) has a set of Picture Parameter Set(PPS) components that the encoder must communicate to the decoder. This patch adds register definitions to the PPS parameters for eDP/MIPI case and Display Port. v2: - Use _MMIO_PIPE instead of _MMIO(_PICK()). (Manasi) - Use DSC constants as arguments. (Manasi) Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Cc: Manasi Navare <manasi.d.navare@intel.com> Signed-off-by:
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Anusha Srivatsa authored
The Picture Parameter Set metadata for DSC has to be sent to the panel through secondary data packets. Add the error correction registers, data registers and control registers for the same. The control registers for transcoders A and B are already defined and will be reused for Icelake purpose. This patch adds Control register for EDP and transcoder C apart from adding the PPS data and error registers. v2: reuse MMIO_TRANS2 for _PPS_DATA and _PPS_ECC. The _MMIO_TRANS2(pipe, reg) macro definition takes care of the eDp case Cc: Jani Nikula <jani.nikula@intel.com> Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Cc: Manasi Navare <manasi.d.navare@intel.com> Signed-off-by:
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- 18 Jul, 2018 5 commits
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Kees Cook authored
In the quest to remove all stack VLA usage from the kernel[1], this uses the maximum sane buffer size and removes copy/paste code. [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.comReviewed-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
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Huang Rui authored
BO ptr already be initialized at definition, we needn't use the complicated reference. v2: fix typo at subject line Signed-off-by:
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Sonny Jiang authored
Remove internal/unused kernel module parameters Signed-off-by:
Sonny Jiang <sonny.jiang@amd.com> Reviewed-by:
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Christian König authored
Pushing a job can change the ring assignment of an entity. v2: squash in: "drm/amdgpu: fix job priority handling" (Christian) Signed-off-by:
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Christian König authored
Allow to call amdgpu_ring_priority_get() after pushing the ring to the scheduler. Signed-off-by:
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