linux-kernel - [PATCH 3/4] DRM: BRIDGE: TFP410: Fix logic to configured polled HPD

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Message-Id: <20230125-tfp410_i2c-v1-3-66a4d4e390b7@criticallink.com>
Date:   Wed, 25 Jan 2023 16:09:11 -0500
From:   Jonathan Cormier <jcormier@...ticallink.com>
To:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <robert.foss@...aro.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        Jyri Sarha <jsarha@...com>
Cc:     dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Michael Williamson <michael.williamson@...ticallink.com>,
        Bob Duke <bduke@...ticallink.com>,
        Jonathan Cormier <jcormier@...ticallink.com>
Subject: [PATCH 3/4] DRM: BRIDGE: TFP410: Fix logic to configured polled HPD

From: Michael Williamson <michael.williamson@...ticallink.com>

The logic to configure polling (vs async/irq notification) of hot-plug
events was not correct.  If the connected bridge requires polling,
then inform the upstream bridge we also require polling.

Signed-off-by: Michael Williamson <michael.williamson@...ticallink.com>
Signed-off-by: Jonathan Cormier <jcormier@...ticallink.com>
---
 drivers/gpu/drm/bridge/ti-tfp410.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c
index 323a6d9ed188..837e1f81a0ff 100644
--- a/drivers/gpu/drm/bridge/ti-tfp410.c
+++ b/drivers/gpu/drm/bridge/ti-tfp410.c
@@ -155,7 +155,7 @@ static int tfp410_attach(struct drm_bridge *bridge,
 		return -ENODEV;
 	}
 
-	if (dvi->next_bridge->ops & DRM_BRIDGE_OP_DETECT)
+	if (dvi->next_bridge->ops & DRM_BRIDGE_OP_HPD)
 		dvi->connector.polled = DRM_CONNECTOR_POLL_HPD;
 	else
 		dvi->connector.polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;

-- 
2.25.1