linux-kernel - [PATCH v3 04/11] drm/bridge: lontium-lt9611: declare supported infoframes

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Message-Id: <20250830-drm-limit-infoframes-v3-4-32fcbec4634e@oss.qualcomm.com>
Date: Sat, 30 Aug 2025 03:23:00 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <rfoss@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Sandy Huang <hjc@...k-chips.com>,
        Heiko Stübner <heiko@...ech.de>,
        Andy Yan <andy.yan@...k-chips.com>, Chen-Yu Tsai <wens@...e.org>,
        Samuel Holland <samuel@...lland.org>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Maíra Canal <mcanal@...lia.com>,
        Raspberry Pi Kernel Maintenance <kernel-list@...pberrypi.com>,
        Liu Ying <victor.liu@....com>,
        Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jessica.zhang@....qualcomm.com>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org
Subject: [PATCH v3 04/11] drm/bridge: lontium-lt9611: declare supported
 infoframes

Declare which infoframes are supported via the .hdmi_write_infoframe()
interface.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
---
 drivers/gpu/drm/bridge/lontium-lt9611.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index a2d032ee4744715b88eb66883edf69bab4c274b0..271295e1549885ea054647b06cb95d483e352f4d 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -870,8 +870,7 @@ static int lt9611_hdmi_clear_infoframe(struct drm_bridge *bridge,
 
 	default:
 		drm_dbg_driver(lt9611->bridge.dev, "Unsupported HDMI InfoFrame %x\n", type);
-		mask = 0;
-		break;
+		return -EOPNOTSUPP;
 	}
 
 	if (mask)
@@ -911,8 +910,7 @@ static int lt9611_hdmi_write_infoframe(struct drm_bridge *bridge,
 
 	default:
 		drm_dbg_driver(lt9611->bridge.dev, "Unsupported HDMI InfoFrame %x\n", type);
-		mask = 0;
-		break;
+		return -EOPNOTSUPP;
 	}
 
 	if (mask) {
@@ -1136,6 +1134,11 @@ static int lt9611_probe(struct i2c_client *client)
 	lt9611->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
 	lt9611->bridge.vendor = "Lontium";
 	lt9611->bridge.product = "LT9611";
+	lt9611->bridge.software_infoframes =
+		DRM_CONNECTOR_INFOFRAME_AUDIO |
+		DRM_CONNECTOR_INFOFRAME_AVI |
+		DRM_CONNECTOR_INFOFRAME_SPD |
+		DRM_CONNECTOR_INFOFRAME_VENDOR;
 	lt9611->bridge.hdmi_audio_dev = dev;
 	lt9611->bridge.hdmi_audio_max_i2s_playback_channels = 8;
 	lt9611->bridge.hdmi_audio_dai_port = 2;

-- 
2.47.2