[PATCH v3 04/38] drm/msm/dp: re-arrange dp_display_disable() into functional parts

[Dmitry Baryshkov]

On Mon, Aug 25, 2025 at 10:15:50PM +0800, Yongxing Mou wrote:
> From: Abhinav Kumar <quic_abhinavk at quicinc.com>
> 
> dp_display_disable() handles special case of when monitor is
> disconnected from the dongle while the dongle stays connected
> thereby needing a separate function dp_ctrl_off_link_stream()
> for this. However with a slight rework this can still be handled
> by keeping common paths same for regular and special case.

I'm mostly sure that this needs to be reworked by the HPD patchset (or
as a part of this patchset). The DP controller and the AUX channel needs
to be on for as long as there is a DPRX connected to the DP port. The
atomic_enable() / atomic_disable() callbacks should only be handling the
data lanes.

Nevertheless the patch on its own is correct.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at oss.qualcomm.com>


> 
> Signed-off-by: Abhinav Kumar <quic_abhinavk at quicinc.com>
> Signed-off-by: Yongxing Mou <yongxing.mou at oss.qualcomm.com>
> ---
>  drivers/gpu/drm/msm/dp/dp_ctrl.c    | 19 +------------------
>  drivers/gpu/drm/msm/dp/dp_ctrl.h    |  3 ++-
>  drivers/gpu/drm/msm/dp/dp_display.c | 10 +++++++++-
>  3 files changed, 12 insertions(+), 20 deletions(-)
> 

-- 
With best wishes
Dmitry