Mario Kleiner 0cbd0adc44 drm: Fix timestamp docs for variable refresh properties. ... As discussed with Nicholas and Daniel Vetter (patchwork link to discussion below), the VRR timestamping behaviour produced utterly useless and bogus vblank/pageflip timestamps. We have found a way to fix this and provide sane behaviour. As of Linux 5.2, the amdgpu driver will be able to provide exactly the same vblank / pageflip timestamp semantic in variable refresh rate mode as in standard fixed refresh rate mode. This is achieved by deferring core vblank handling (drm_crtc_handle_vblank()) until the end of front porch, and also defer the sending of pageflip completion events until end of front porch, when we can safely compute correct pageflip/vblank timestamps. The same approach will be possible for other VRR capable kms drivers, so we can actually have sane and useful timestamps in VRR mode. This patch removes the section of the docs that describes the broken timestamp behaviour present in Linux 5.0/5.1. Fixes: ab7a664f7a ("drm: Document variable refresh properties") Link: https://patchwork.freedesktop.org/patch/285333/ Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190418060157.18968-1-mario.kleiner.de@gmail.com Cc: stable@vger.kernel.org		2019-05-07 10:39:14 -05:00
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drm	drm: Fix timestamp docs for variable refresh properties.	2019-05-07 10:39:14 -05:00
host1x	gpu: host1x: Fix compile error when IOMMU API is not available	2019-04-11 10:35:39 +02:00
ipu-v3	media updates for v5.1-rc1	2019-03-09 14:45:54 -08:00
vga	- qxl: Remove the conflicting framebuffers earlier	2019-03-14 11:37:46 +10:00
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