linux-kernel - [PATCH] drm/bridge: lontium-lt9611uxc: disable audio capture for HDMI card

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Message-Id: <20251208161642.3763245-1-vovchkir@gmail.com>
Date: Mon,  8 Dec 2025 19:16:41 +0300
From: Vladimir Yakovlev <vovchkir@...il.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Vladimir Yakovlev <vovchkir@...il.com>,
	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>,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] drm/bridge: lontium-lt9611uxc: disable audio capture for HDMI card

The LT9611UXC only has an I2S input and therefore only an HDMI-TX
audio channel. In this case, the capture channel must be disabled
on the HDMI sound card.

Signed-off-by: Vladimir Yakovlev <vovchkir@...il.com>
---
 drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
index 38fb8776c0f4..d3ce5dd30420 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
@@ -555,6 +555,7 @@ static int lt9611uxc_audio_init(struct device *dev, struct lt9611uxc *lt9611uxc)
 	struct hdmi_codec_pdata codec_data = {
 		.ops = &lt9611uxc_codec_ops,
 		.max_i2s_channels = 2,
+		.no_i2s_capture = 1,
 		.i2s = 1,
 		.data = lt9611uxc,
 	};
-- 
2.34.1