From: Steffen Dirkwinkel <s.dirkwinkel@xxxxxxxxxxxx>
With hpd going through the bridge as of commit eb2d64bfcc17
("drm: xlnx: zynqmp_dpsub: Report HPD through the bridge")
we don't get hotplug events in userspace on zynqmp hardware.
Also sending hotplug events with drm_helper_hpd_irq_event works.
Fixes: eb2d64bfcc17 ("drm: xlnx: zynqmp_dpsub: Report HPD through the bridge")
Signed-off-by: Steffen Dirkwinkel <s.dirkwinkel@xxxxxxxxxxxx>
---
drivers/gpu/drm/xlnx/zynqmp_dp.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c
index 1846c4971fd8..cb823540a412 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_dp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c
@@ -17,6 +17,7 @@
#include <drm/drm_fourcc.h>
#include <drm/drm_modes.h>
#include <drm/drm_of.h>
+#include <drm/drm_probe_helper.h>
#include <linux/clk.h>
#include <linux/delay.h>
@@ -1614,6 +1615,9 @@ static void zynqmp_dp_hpd_work_func(struct work_struct *work)
hpd_work.work);
enum drm_connector_status status;
+ if (dp->bridge.dev)
+ drm_helper_hpd_irq_event(dp->bridge.dev);
+
status = zynqmp_dp_bridge_detect(&dp->bridge);
drm_bridge_hpd_notify(&dp->bridge, status);
}
--
2.46.1
