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[08/13,NOT,FOR,REVIEW,NOW] drm: bridge: Enable polling hpd event in dw_hdmi

Message ID 20170801131304.7741-9-icenowy@aosc.io (mailing list archive)
State RFC
Headers show

Commit Message

Icenowy Zheng Aug. 1, 2017, 1:12 p.m. UTC 
From: Jernej Skrabec <jernej.skrabec@siol.net>

Some custom phys don't support hpd interrupts. Add support for polling
such events.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 60faf2d2bc6b..6c6466c6297c 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -1942,7 +1942,11 @@  static int dw_hdmi_bridge_attach(struct drm_bridge *bridge)
 	struct drm_connector *connector = &hdmi->connector;
 
 	connector->interlace_allowed = 1;
-	connector->polled = DRM_CONNECTOR_POLL_HPD;
+	if (hdmi->phy.ops->setup_hpd)
+		connector->polled = DRM_CONNECTOR_POLL_HPD;
+	else
+		connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+				    DRM_CONNECTOR_POLL_DISCONNECT;
 
 	drm_connector_helper_add(connector, &dw_hdmi_connector_helper_funcs);