drm/bridge: dw-hdmi: set channel count in the infoframes

Set the number of channel in the infoframes
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812120726.1528-4-jbrunet@baylibre.com

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);