Dave Airlie
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30169bb645
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Backmerge v6.12-rc6 of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into drm-next
Backmerge Linus tree for some drm-fixes needed for msm and xe merges.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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2024-11-04 14:25:33 +10:00 |
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Dmitry Baryshkov
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c44a0faf53
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drm/bridge: aux: allow interlaced and YCbCr 420 output
As both aux bridges are merely passthrough bridges, mark them as
supporting interlaced and YCbCr 420 data. Other bridges in the chain
still might limit interlaced and YCbCr 420 data support on the
corresponding connector.
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20241019-bridge-yuv420-v1-4-d74efac9e4e6@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
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2024-10-24 22:42:26 +03:00 |
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Abel Vesa
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85e444a681
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drm/bridge: Fix assignment of the of_node of the parent to aux bridge
The assignment of the of_node to the aux bridge needs to mark the
of_node as reused as well, otherwise resource providers like pinctrl will
report a gpio as already requested by a different device when both pinconf
and gpios property are present.
Fix that by using the device_set_of_node_from_dev() helper instead.
Fixes: 6914968a0b ("drm/bridge: properly refcount DT nodes in aux bridge drivers")
Cc: stable@vger.kernel.org # 6.8
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20241018-drm-aux-bridge-mark-of-node-reused-v2-1-aeed1b445c7d@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20241018-drm-aux-bridge-mark-of-node-reused-v2-1-aeed1b445c7d@linaro.org
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2024-10-21 14:59:48 +02:00 |
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Dmitry Baryshkov
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6914968a0b
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drm/bridge: properly refcount DT nodes in aux bridge drivers
The aux-bridge and aux-hpd-bridge drivers didn't call of_node_get() on
the device nodes further used for dev->of_node and platform data. When
bridge devices are released, the reference counts are decreased,
resulting in refcount underflow / use-after-free warnings. Get
corresponding refcounts during AUX bridge allocation.
Reported-by: Luca Weiss <luca.weiss@fairphone.com>
Fixes: 2a04739139 ("drm/bridge: add transparent bridge helper")
Fixes: 26f4bac3d8 ("drm/bridge: aux-hpd: Replace of_device.h with explicit include")
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231216235910.911958-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
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2023-12-19 02:06:16 +02:00 |
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Dmitry Baryshkov
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2a04739139
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drm/bridge: add transparent bridge helper
Define a helper for creating simple transparent bridges which serve the
only purpose of linking devices into the bridge chain up to the last
bridge representing the connector. This is especially useful for
DP/USB-C bridge chains, which can span across several devices, but do
not require any additional functionality from the intermediate bridges.
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231203114333.1305826-2-dmitry.baryshkov@linaro.org
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2023-12-04 16:07:29 +02:00 |
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