drm/mediatek: mtk_hdmi: Move plugged_cb/codec_dev setting to new function

In preparation for splitting common bits of this driver, move the
mutex-protected cable plugged callback and codec device setting
to a new function called mtk_hdmi_audio_set_plugged_cb().

Reviewed-by: CK Hu <[email protected]>
Signed-off-by: AngeloGioacchino Del Regno <[email protected]>
Link: https://patchwork.kernel.org/project/dri-devel/patch/[email protected]/
Signed-off-by: Chun-Kuang Hu <[email protected]>

Author: AngeloGioacchino Del Regno

drivers/gpu/drm/mediatek/mtk_hdmi.c

@@ -1582,17 +1582,22 @@ static int mtk_hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf,
 	return 0;
 }
 
-static int mtk_hdmi_audio_hook_plugged_cb(struct device *dev, void *data,
-					  hdmi_codec_plugged_cb fn,
+static void mtk_hdmi_audio_set_plugged_cb(struct mtk_hdmi *hdmi, hdmi_codec_plugged_cb fn,
 					  struct device *codec_dev)
 {
-	struct mtk_hdmi *hdmi = data;
-
 	mutex_lock(&hdmi->update_plugged_status_lock);
 	hdmi->plugged_cb = fn;
 	hdmi->codec_dev = codec_dev;
 	mutex_unlock(&hdmi->update_plugged_status_lock);
+}
+
+static int mtk_hdmi_audio_hook_plugged_cb(struct device *dev, void *data,
+					  hdmi_codec_plugged_cb fn,
+					  struct device *codec_dev)
+{
+	struct mtk_hdmi *hdmi = data;
 
+	mtk_hdmi_audio_set_plugged_cb(hdmi, fn, codec_dev);
 	mtk_hdmi_update_plugged_status(hdmi);
 
 	return 0;