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Veera Sundaram Sankaran 583065c7aa drm/drm_vblank: set the dma-fence timestamp during send_vblank_event 
The explicit out-fences in crtc are signaled as part of vblank event,
indicating all framebuffers present on the Atomic Commit request are
scanned out on the screen. Though the fence signal and the vblank event
notification happens at the same time, triggered by the same hardware
vsync event, the timestamp set in both are different. With drivers
supporting precise vblank timestamp the difference between the two
timestamps would be even higher. This might have an impact on use-mode
frameworks using these fence timestamps for purposes other than simple
buffer usage. For instance, the Android framework [1] uses the
retire-fences as an alternative to vblank when frame-updates are in
progress. Set the fence timestamp during send vblank event using a new
drm_send_event_timestamp_locked variant to avoid discrepancies.

[1] https://android.googlesource.com/platform/frameworks/native/+/master/
services/surfaceflinger/Scheduler/Scheduler.cpp#397

Changes in v2:
- Use drm_send_event_timestamp_locked to update fence timestamp
- add more information to commit text

Changes in v3:
- use same backend helper function for variants of drm_send_event to
avoid code duplications

Changes in v4:
- remove WARN_ON from drm_send_event_timestamp_locked

Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
Reviewed-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
  [sumits: minor parenthesis alignment correction]
Link: https://patchwork.freedesktop.org/patch/msgid/1610757107-11892-2-git-send-email-veeras@codeaurora.org
(cherry picked from commit a78e7a51d2fa9d2f482b462be4299784c884d988)
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
 		2021-02-24 21:05:54 +05:30
..
bridge drm/bridge: dw-mipi-dsi: permit configuring the escape clock rate 2020-09-11 15:01:36 +02:00
i2c
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ttm drm/ttm: WARN_ON non-empty lru when disabling a resource manager 2021-01-18 14:15:20 +01:00
amd_asic_type.h drm/amdgpu: add dimgrey_cavefish asic type 2020-10-12 14:00:01 -04:00
drm_agpsupport.h drm: Inline AGP wrappers into their only callers 2021-01-13 14:21:53 +01:00
drm_atomic.h drm: Document use-after-free gotcha with private objects 2020-12-15 11:33:23 +01:00
drm_atomic_helper.h drm: automatic legacy gamma support 2020-12-15 15:46:03 +02:00
drm_atomic_state_helper.h drm/bridge: Add a drm_bridge_state object 2020-01-31 16:00:21 +01:00
drm_atomic_uapi.h drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00
drm_audio_component.h ALSA: hda/i915 - fix list corruption with concurrent probes 2020-10-09 16:46:04 +02:00
drm_auth.h drm: make drm/drm_auth.h self contained 2019-05-27 18:05:44 +02:00
drm_blend.h
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drm_bridge.h drm: drm_bridge.h: delete duplicated word in comment 2020-07-15 14:02:34 +02:00
drm_bridge_connector.h drm: Add helper to create a connector for a chain of bridges 2020-02-26 13:31:41 +02:00
drm_cache.h MIPS: Loongson64: Rename CPU TYPES 2019-10-31 15:03:10 -07:00
drm_client.h drm/gem: Store client buffer mappings as struct dma_buf_map 2020-11-09 09:19:45 +01:00
drm_color_mgmt.h drm: Inline drm_color_lut_extract() 2019-11-29 21:29:17 +02:00
drm_connector.h Merge tag 'topic/dp-hdmi-2.1-pcon-2020-12-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-next 2021-01-07 11:02:25 +01:00
drm_crtc.h drm: drm_crc: fix a kernel-doc markup 2021-01-14 15:11:46 +01:00
drm_crtc_helper.h drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
drm_damage_helper.h drm/damage-helper: Add drm_atomic_helper_damage_merged() 2019-01-17 10:56:54 +01:00
drm_debugfs.h drm/debugfs: remove checks for return value of drm_debugfs functions. 2020-03-18 17:32:20 +01:00
drm_debugfs_crc.h
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drm_device.h drm: Move struct drm_device.hose to legacy section 2021-01-13 14:22:37 +01:00
drm_displayid.h drm/edid: Replace zero-length array with flexible-array 2020-06-15 23:08:31 -05:00
drm_dp_dual_mode_helper.h
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drm_dp_helper.h drm/dp: Revert "drm/dp: Introduce EDID-based quirks" 2021-01-19 12:35:52 -05:00
drm_dp_mst_helper.h drm/dp/mst: Export drm_dp_get_vc_payload_bw() 2021-01-28 21:34:02 +02:00
drm_drv.h drm: Move legacy device list out of drm_driver 2021-01-05 07:20:29 +02:00
drm_dsc.h - Display hotplug fix for gen2/gen3 (Chris) 2021-01-07 12:20:29 +01:00
drm_edid.h drm/edid: Add additional HFVSDB fields for HDMI2.1 2020-12-22 17:39:06 +02:00
drm_encoder.h drm: add drmm_encoder_alloc() 2021-01-04 12:59:33 +01:00
drm_encoder_slave.h drm: remove include of drmP.h from drm_encoder_slave.h 2019-01-09 22:35:35 +01:00
drm_fb_cma_helper.h drm/fb-cma-helpers: Fix include issue 2020-01-09 17:33:41 +01:00
drm_fb_helper.h drm/fb-helper: Rename dirty worker to damage worker 2020-11-24 09:27:55 +01:00
drm_file.h drm/drm_vblank: set the dma-fence timestamp during send_vblank_event 2021-02-24 21:05:54 +05:30
drm_fixed.h
…
drm_flip_work.h
…
drm_format_helper.h drm/format-helper: Add drm_fb_swab() 2020-05-26 13:33:08 +02:00
drm_fourcc.h drm/fb: Extend format_info member arrays to handle four planes 2020-01-07 13:16:08 +02:00
drm_framebuffer.h drm/core: Calculate bpp in afbc helper 2020-04-01 14:11:22 +02:00
drm_gem.h drm: Don't export the drm_gem_dumb_destroy() function 2021-01-05 07:20:25 +02:00
drm_gem_cma_helper.h drm/cma-helper: Implement mmap as GEM CMA object functions 2020-11-30 13:38:27 +01:00
drm_gem_framebuffer_helper.h drm/core: Add drm_afbc_framebuffer and a corresponding helper 2020-03-18 11:22:05 +01:00
drm_gem_shmem_helper.h drm/shmem-helper: Removed drm_gem_shmem_create_object_cached() 2020-11-24 09:10:33 +01:00
drm_gem_ttm_helper.h drm/ttm: Add vmap/vunmap to TTM and TTM GEM helpers 2020-11-09 09:17:36 +01:00
drm_gem_vram_helper.h drm: fix some kernel-doc markups 2020-11-16 20:48:20 +01:00
drm_hashtab.h
…
drm_hdcp.h drm/hdcp: Max MST content streams 2021-01-13 08:29:32 +05:30
drm_ioctl.h drm/ioctl: Ditch DRM_UNLOCKED except for the legacy vblank ioctl 2019-06-21 19:13:10 +02:00
drm_irq.h drm/irq: Add the new api to install irq 2020-12-03 03:57:15 -05:00
drm_lease.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
drm_legacy.h drm: Use a const drm_driver for legacy PCI devices 2021-01-05 07:20:35 +02:00
drm_managed.h drm: Remove drmm_add_final_kfree() declaration from public headers 2020-12-05 20:01:12 +01:00
drm_mipi_dbi.h drm/mipi-dbi: Switch to new kerneldoc syntax for named variable macro argument 2021-01-08 09:54:43 +01:00
drm_mipi_dsi.h drm/dsi: add helpers for DSI compression mode and PPS packets 2019-11-07 15:00:16 +02:00
drm_mm.h drm: fix spelling error in comments 2020-09-17 13:39:44 +02:00
drm_mode_config.h drm/fb_helper: Support framebuffers in I/O memory 2020-11-09 09:20:00 +01:00
drm_mode_object.h
…
drm_modes.h drm/modes: add non-OF stub for of_get_drm_display_mode 2021-01-08 19:42:14 +01:00
drm_modeset_helper.h drm: remove drmP.h from drm_modeset_helper.h 2019-02-07 21:48:34 +01:00
drm_modeset_helper_vtables.h - Add default modes for connectors in unknown state 2021-01-07 13:02:57 +01:00
drm_modeset_lock.h drm/modeset-lock: Take the modeset BKL for legacy drivers 2020-08-17 13:41:50 -04:00
drm_of.h drm: of: Fix linking when CONFIG_OF is not set 2020-01-09 10:40:58 +10:00
drm_panel.h drm/panel: Add helper for reading DT rotation 2020-08-16 17:12:18 +02:00
drm_pciids.h drm/radeon: change SPDX identifier to MIT 2018-10-15 16:16:12 -05:00
drm_plane.h drm/plane: add drmm_universal_plane_alloc() 2021-01-04 12:59:33 +01:00
drm_plane_helper.h drm: Unexport drm_plane_helper_check_update 2018-10-05 22:45:19 +02:00
drm_prime.h drm/prime: split array import functions v4 2020-11-30 15:00:45 +01:00
drm_print.h drm: drm_print.h: fix kernel-doc markups 2020-10-27 11:21:39 +01:00
drm_probe_helper.h drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
drm_property.h drm: Fix macro name DRM_MODE_PROP_OBJECT in code comment 2021-01-12 09:56:48 +01:00
drm_rect.h drm: Add function to convert rect in 16.16 fixed format to regular format 2021-01-05 05:32:52 -08:00
drm_scdc_helper.h drm/scdc: Fix typo in bit definition of SCDC_STATUS_FLAGS 2019-11-04 17:58:46 +01:00
drm_self_refresh_helper.h drm/atomic: fix self-refresh helpers crtc state dereference 2019-11-06 13:00:21 -05:00
drm_simple_kms_helper.h drm/simple_kms_helper: add drmm_simple_encoder_alloc() 2021-01-04 12:59:33 +01:00
drm_syncobj.h drm/syncobj: add new drm_syncobj_add_point interface v4 2019-04-01 12:05:53 +02:00
drm_sysfs.h drm: uevent for connector status change 2019-08-06 13:16:54 +05:30
drm_util.h drm: Move EXPORT_SYMBOL_FOR_TESTS_ONLY under a separate Kconfig 2019-11-07 21:22:15 +00:00
drm_utils.h drm: export drm_timeout_abs_to_jiffies 2019-03-07 12:00:30 -06:00
drm_vblank.h drm/vblank: Add vblank works 2020-07-16 18:16:31 -04:00
drm_vblank_work.h drm/vblank: Add vblank works 2020-07-16 18:16:31 -04:00
drm_vma_manager.h drm: increase drm mmap_range size to 1TB 2019-04-24 16:20:23 -05:00
drm_writeback.h drm/writeback: wire drm_writeback.h to kernel-doc 2020-04-07 17:39:46 +02:00
gma_drm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335 2019-06-05 17:37:06 +02:00
gpu_scheduler.h Revert "drm/scheduler: Job timeout handler returns status (v3)" 2021-02-10 15:26:00 +01:00
i915_component.h drm/i915/tgl: Add additional ports for Tiger Lake 2019-07-11 16:31:14 -07:00
i915_drm.h drm: Move port definition back to i915 header 2019-08-30 14:08:26 +05:30
i915_mei_hdcp_interface.h drm/i915: significantly reduce the use of <drm/i915_drm.h> 2020-02-27 08:35:09 +02:00
i915_pciids.h drm/i915: Sort EHL/JSL PCI IDs 2020-11-06 14:09:30 +02:00
intel-gtt.h iommu/vt-d: Move intel_iommu_gfx_mapped to Intel IOMMU header 2020-09-04 12:12:45 +02:00
intel_lpe_audio.h
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spsc_queue.h
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task_barrier.h drm: Add Reusable task barrier. 2019-12-18 16:09:12 -05:00