From: Lars-Peter Clausen <lars@metafoo.de>
Date: Tue, 5 Sep 2017 14:10:17 +0200
Subject: drm/bridge: adv7511: Enable connector polling when no interrupt is
 specified
Git-commit: 2f47f1c106d99f367f2924ce35741050fb87e081
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Fall back to polling the connector for connect and disconnect events when
no interrupt is specified. Otherwise these events will not be noticed and
monitor hotplug does not work.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20170905121018.11477-3-lars@metafoo.de

Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/bridge/adv7511/adv7511_drv.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
@@ -829,7 +829,11 @@ static int adv7511_bridge_attach(struct
 		return -ENODEV;
 	}
 
-	adv->connector.polled = DRM_CONNECTOR_POLL_HPD;
+	if (adv->i2c_main->irq)
+		adv->connector.polled = DRM_CONNECTOR_POLL_HPD;
+	else
+		adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT |
+				DRM_CONNECTOR_POLL_DISCONNECT;
 
 	ret = drm_connector_init(bridge->dev, &adv->connector,
 				 &adv7511_connector_funcs,