On 25/05/2026 15:32, Konrad Dybcio wrote:
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?
yep
Otherwise, if keeping msm_dp_aux_enable_xfers(true) is intentional
in bailout cases:
In the non-error bailouts, yes. I might want to change that later, but
for now it's expected this way.
Reviewed-by: Konrad Dybcio <[email protected]>
Konrad
--
With best wishes
Dmitry
