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Message-Id: <20240530-bridge-hdmi-connector-v3-1-a1d184d68fe3@linaro.org>
Date: Thu, 30 May 2024 02:12:24 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
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>, Daniel Vetter <daniel@...ll.ch>,
Rob Clark <robdclark@...il.com>, Abhinav Kumar <quic_abhinavk@...cinc.com>,
Sean Paul <sean@...rly.run>, Marijn Suijten <marijn.suijten@...ainline.org>
Cc: dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: [PATCH v3 1/7] drm/connector: hdmi: accept NULL for Audio
Infoframe
Allow passing NULL as audio infoframe as a way to disable Audio
Infoframe generation.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
drivers/gpu/drm/display/drm_hdmi_state_helper.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
index ce96837eea65..5356723d21f5 100644
--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -681,7 +681,7 @@ EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_update_infoframes);
/**
* drm_atomic_helper_connector_hdmi_update_audio_infoframe - Update the Audio Infoframe
* @connector: A pointer to the HDMI connector
- * @frame: A pointer to the audio infoframe to write
+ * @frame: A pointer to the audio infoframe to write or NULL to disable sending the frame
*
* This function is meant for HDMI connector drivers to update their
* audio infoframe. It will typically be used in one of the ALSA hooks
@@ -704,10 +704,16 @@ drm_atomic_helper_connector_hdmi_update_audio_infoframe(struct drm_connector *co
mutex_lock(&connector->hdmi.infoframes.lock);
- memcpy(&infoframe->data, frame, sizeof(infoframe->data));
- infoframe->set = true;
+ if (frame) {
+ memcpy(&infoframe->data, frame, sizeof(infoframe->data));
+ infoframe->set = true;
+
+ ret = write_infoframe(connector, infoframe);
+ } else {
+ infoframe->set = false;
- ret = write_infoframe(connector, infoframe);
+ ret = clear_infoframe(connector, infoframe);
+ }
mutex_unlock(&connector->hdmi.infoframes.lock);
--
2.39.2
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