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authorMaxime Ripard <maxime@cerno.tech>2020-11-20 15:42:45 +0100
committerMaxime Ripard <maxime@cerno.tech>2020-11-23 17:59:30 +0100
commit2820526dd5c27326d9c0d2c831a34b8f14e7c404 (patch)
treebd36b48283844f85a49e7c261807ebc1c11d7160 /README
parentf2df84e096a8254ddb18c531b185fc2a45879077 (diff)
drm/vc4: kms: Don't disable the muxing of an active CRTC
The current HVS muxing code will consider the CRTCs in a given state to setup their muxing in the HVS, and disable the other CRTCs muxes. However, it's valid to only update a single CRTC with a state, and in this situation we would mux out a CRTC that was enabled but left untouched by the new state. Fix this by setting a flag on the CRTC state when the muxing has been changed, and only change the muxing configuration when that flag is there. Fixes: 87ebcd42fb7b ("drm/vc4: crtc: Assign output to channel automatically") Signed-off-by: Maxime Ripard <maxime@cerno.tech> Tested-by: Hoegeun Kwon <hoegeun.kwon@samsung.com> Reviewed-by: Hoegeun Kwon <hoegeun.kwon@samsung.com> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20201120144245.398711-3-maxime@cerno.tech
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