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author | Neil Armstrong <narmstrong@baylibre.com> | 2021-10-20 14:39:42 +0200 |
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committer | Neil Armstrong <narmstrong@baylibre.com> | 2021-11-12 10:07:11 +0100 |
commit | 7cd70656d1285b79c001f041a017fcfee4292ff9 (patch) | |
tree | 65db860ac84a5e60143a3832cf05e01097662d45 /drivers/gpu/drm/meson | |
parent | 3f2532d65a571ca02258b547b5b68ab2e9406fdb (diff) | |
download | linux-stable-7cd70656d1285b79c001f041a017fcfee4292ff9.tar.gz linux-stable-7cd70656d1285b79c001f041a017fcfee4292ff9.tar.bz2 linux-stable-7cd70656d1285b79c001f041a017fcfee4292ff9.zip |
drm/bridge: display-connector: implement bus fmts callbacks
Since this bridge is tied to the connector, it acts like a passthrough,
so concerning the output & input bus formats, either pass the bus formats from the
previous bridge or return fallback data like done in the bridge function:
drm_atomic_bridge_chain_select_bus_fmts() & select_bus_fmt_recursive.
This permits avoiding skipping the negociation if the remaining bridge chain has
all the bits in place.
Without this bus fmt negociation breaks on drm/meson HDMI pipeline when attaching
dw-hdmi with DRM_BRIDGE_ATTACH_NO_CONNECTOR, because the last bridge of the
display-connector doesn't implement buf fmt callbacks and MEDIA_BUS_FMT_FIXED
is used leading to select an unsupported default bus format from dw-hdmi.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211020123947.2585572-2-narmstrong@baylibre.com
Diffstat (limited to 'drivers/gpu/drm/meson')
0 files changed, 0 insertions, 0 deletions