drm/msm/dp: move link-level teardown from display_disable to display_unprepare

msm_dp_display_disable() currently mixes stream-level shutdown
(disable VSC SDP, off pixel clk, clear power_on) with link-level
teardown (PSM config when sink_count==0, off_link, PHY re-init or
host PHY exit).

For DP MST the same link is shared across multiple streams, so
disabling one stream must not tear down the link. Move the
link-level steps into msm_dp_display_unprepare() so that
display_disable() handles only the per-stream sequence, mirroring
the split already present on the prepare path
(display_prepare_link vs display_set_mode / display_enable).

SST behaviour is unchanged: atomic_post_disable() still calls
display_disable() followed by display_unprepare() in the same
order, and the cached dp->panel used inside unprepare is the same
panel that was previously passed in.

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
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/756899/
Link: https://lore.kernel.org/r/20260929-msm-dp-mst-v7-1-4b81473185e7@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

0 files changed, 0 insertions, 0 deletions