drm/msm/dp: split msm_dp_ctrl_config_ctrl() into link parts and stream parts

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The DP_CONFIGURATION_CTRL register contains both link-level and
stream-specific fields. Currently, msm_dp_ctrl_config_ctrl() configures
all of them together. Separate the configuration into link parts and
stream parts to support MST. Clear the stream-specific fields before
OR-ing new values in the stream path to avoid bit accumulation across
repeated calls.

Signed-off-by: Yongxing Mou <yongxing.mou@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/742733/
Link: https://lore.kernel.org/r/20260728-dp_mstclean-v9-4-f7779fce10f4@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

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Yongxing Mou 2026-07-28 18:21:33 +08:00 • committed by Dmitry Baryshkov

parent 1c96c88ec1

commit 7de83c2129

2 changed files with 38 additions and 15 deletions

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51

drivers/gpu/drm/msm/dp/dp_ctrl.c

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2

drivers/gpu/drm/msm/dp/dp_reg.h

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