linux-kernel - [PATCH v3 03/11] drm/bridge: ite-it6263: declare supported infoframes

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Message-Id: <20250830-drm-limit-infoframes-v3-3-32fcbec4634e@oss.qualcomm.com>
Date: Sat, 30 Aug 2025 03:22:59 +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 03/11] drm/bridge: ite-it6263: declare supported
 infoframes

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

Reviewed-by: Liu Ying <victor.liu@....com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
---
 drivers/gpu/drm/bridge/ite-it6263.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bridge/ite-it6263.c b/drivers/gpu/drm/bridge/ite-it6263.c
index cf813672b4ffb8ab5c524c6414ee7b414cebc018..f2d54ad8fb64254747f2e8e301f19accf337128f 100644
--- a/drivers/gpu/drm/bridge/ite-it6263.c
+++ b/drivers/gpu/drm/bridge/ite-it6263.c
@@ -755,10 +755,12 @@ static int it6263_hdmi_clear_infoframe(struct drm_bridge *bridge,
 {
 	struct it6263 *it = bridge_to_it6263(bridge);
 
-	if (type == HDMI_INFOFRAME_TYPE_AVI)
-		regmap_write(it->hdmi_regmap, HDMI_REG_AVI_INFOFRM_CTRL, 0);
-	else
+	if (type != HDMI_INFOFRAME_TYPE_AVI) {
 		dev_dbg(it->dev, "unsupported HDMI infoframe 0x%x\n", type);
+		return -EOPNOTSUPP;
+	}
+
+	regmap_write(it->hdmi_regmap, HDMI_REG_AVI_INFOFRM_CTRL, 0);
 
 	return 0;
 }
@@ -772,7 +774,7 @@ static int it6263_hdmi_write_infoframe(struct drm_bridge *bridge,
 
 	if (type != HDMI_INFOFRAME_TYPE_AVI) {
 		dev_dbg(it->dev, "unsupported HDMI infoframe 0x%x\n", type);
-		return 0;
+		return -EOPNOTSUPP;
 	}
 
 	/* write the first AVI infoframe data byte chunk(DB1-DB5) */
@@ -875,6 +877,7 @@ static int it6263_probe(struct i2c_client *client)
 	it->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
 	it->bridge.vendor = "ITE";
 	it->bridge.product = "IT6263";
+	it->bridge.software_infoframes = DRM_CONNECTOR_INFOFRAME_AVI;
 
 	return devm_drm_bridge_add(dev, &it->bridge);
 }

-- 
2.47.2