[RESEND RFC PATCH 1/7] drm: bridge: Enable polling hpd event in dw_hdmi

[Jernej Skrabec]

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

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

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c 
b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index bf14214fa464..09cb5a3e4c71 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -1954,7 +1954,11 @@ 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);
 
-- 
2.14.1