ASoC: hdmi-codec: use helper function

Current ASoC has many helper function.
This patch use it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/874js7foqb.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/hdmi-codec.c

@@ -518,7 +518,7 @@ static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
 				struct snd_soc_dai *dai)
 {
 	struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
-	struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
+	struct hdmi_codec_daifmt *cf = snd_soc_dai_dma_data_get_playback(dai);
 	struct hdmi_codec_params hp = {
 		.iec = {
 			.status = { 0 },
@@ -562,7 +562,7 @@ static int hdmi_codec_prepare(struct snd_pcm_substream *substream,
 			      struct snd_soc_dai *dai)
 {
 	struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
-	struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
+	struct hdmi_codec_daifmt *cf = snd_soc_dai_dma_data_get_playback(dai);
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	unsigned int channels = runtime->channels;
 	unsigned int width = snd_pcm_format_width(runtime->format);
@@ -597,7 +597,7 @@ static int hdmi_codec_prepare(struct snd_pcm_substream *substream,
 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
 				  unsigned int fmt)
 {
-	struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
+	struct hdmi_codec_daifmt *cf = snd_soc_dai_dma_data_get_playback(dai);
 
 	/* Reset daifmt */
 	memset(cf, 0, sizeof(*cf));
@@ -834,7 +834,8 @@ static int hdmi_dai_probe(struct snd_soc_dai *dai)
 	if (!daifmt)
 		return -ENOMEM;
 
-	dai->playback_dma_data = daifmt;
+	snd_soc_dai_dma_data_set_playback(dai, daifmt);
+
 	return 0;
 }
 
@@ -891,7 +892,7 @@ static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
 	if (ret)
 		return ret;
 
-	cf = dai->playback_dma_data;
+	cf = snd_soc_dai_dma_data_get_playback(dai);
 	cf->fmt = HDMI_SPDIF;
 
 	return 0;