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authorDaniel Vetter <daniel.vetter@ffwll.ch>2023-10-10 18:28:48 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2024-01-08 14:01:50 +0100
commit3df343ef8b94a3eaeb2506c2a0f9be7eca021a96 (patch)
treedf4c773b43005634f99785cec5a05b5ecaa77df8 /arch/mips
parentb69e1f537fb3bb2a0d97e436ddcfb9c11d428f42 (diff)
drm/atomic: clarify the rules around drm_atomic_state->allow_modesetHEADstuff
msm is automagically upgrading normal commits to full modesets, and that's a big no-no: - for one this results in full on->off->on transitions on all these crtc, at least if you're using the usual helpers. Which seems to be the case, and is breaking uapi - further even if the ctm change itself would not result in flicker, this can hide modesets for other reasons. Which again breaks the uapi v2: I forgot the case of adding unrelated crtc state. Add that case and link to the existing kerneldoc explainers. This has come up in an irc discussion with Manasi and Ville about intel's bigjoiner mode. Also cc everyone involved in the msm irc discussion, more people joined after I sent out v1. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: David Airlie <airlied@gmail.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Pekka Paalanen <pekka.paalanen@collabora.com> Cc: Rob Clark <robdclark@gmail.com> Cc: Simon Ser <contact@emersion.fr> Cc: Manasi Navare <navaremanasi@google.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Abhinav Kumar <quic_abhinavk@quicinc.com> Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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