linux-kernel - [PATCH v2 3/8] drm/bridge: dw-hdmi: set channel count in the infoframes

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Date:   Mon, 12 Aug 2019 14:07:21 +0200
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>
Cc:     Jerome Brunet <jbrunet@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Jonas Karlman <jonas@...boo.se>,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH v2 3/8] drm/bridge: dw-hdmi: set channel count in the infoframes

Set the number of channel in the infoframes

Reviewed-by: Jonas Karlman <jonas@...boo.se>
Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index be6d6819bef4..bed4bb017afd 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -663,6 +663,10 @@ void dw_hdmi_set_channel_count(struct dw_hdmi *hdmi, unsigned int cnt)
 	hdmi_modb(hdmi, layout, HDMI_FC_AUDSCONF_AUD_PACKET_LAYOUT_MASK,
 		  HDMI_FC_AUDSCONF);
 
+	/* Set the audio infoframes channel count */
+	hdmi_modb(hdmi, (cnt - 1) << HDMI_FC_AUDICONF0_CC_OFFSET,
+		  HDMI_FC_AUDICONF0_CC_MASK, HDMI_FC_AUDICONF0);
+
 	mutex_unlock(&hdmi->audio_mutex);
 }
 EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_count);
-- 
2.21.0