On 5/24/26 12:33 PM, Dmitry Baryshkov wrote:
> From: Jessica Zhang <[email protected]>
>
> Instead of relying on the link_ready flag to specify if DP is connected,
> read the DPCD bits and get the sink count to accurately detect if DP is
> connected.
>
> Signed-off-by: Jessica Zhang <[email protected]>
> Tested-by: Val Packett <[email protected]> # x1e80100-dell-latitude-7455
> Tested-by: Yongxing Mou <[email protected]> # Hamoa IOT EVK,
> QCS8300 Ride
> Signed-off-by: Dmitry Baryshkov <[email protected]>
> ---
> drivers/gpu/drm/msm/dp/dp_display.c | 63
> +++++++++++++++++++++++++++++++++++++
> drivers/gpu/drm/msm/dp/dp_drm.c | 20 ------------
> drivers/gpu/drm/msm/dp/dp_drm.h | 2 ++
> 3 files changed, 65 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c
> b/drivers/gpu/drm/msm/dp/dp_display.c
> index 1dd168acbbc3..97c4752005c0 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -1152,6 +1152,69 @@ static int msm_dp_hpd_event_thread_start(struct
> msm_dp_display_private *msm_dp_p
> return 0;
> }
>
> +/**
> + * msm_dp_bridge_detect - callback to determine if connector is connected
> + *
> + * @bridge: Pointer to drm bridge structure
> + * @connector: Pointer to drm connector structure
> + *
> + * Returns: where there is a display connected to the DPTX (returning
whether?
Otherwise, if keeping msm_dp_aux_enable_xfers(true) is intentional
in bailout cases:
Reviewed-by: Konrad Dybcio <[email protected]>
Konrad
