soundwire: intel: move shutdown() callback and don't export symbol

All DAI callbacks are in intel.c except for shutdown. Move and remove
export symbol
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190806005522.22642-18-pierre-louis.bossart@linux.intel.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/soundwire/cadence_master.c

@@ -1222,19 +1222,5 @@ int sdw_cdns_alloc_stream(struct sdw_cdns *cdns,
 }
 EXPORT_SYMBOL(sdw_cdns_alloc_stream);
 
-void sdw_cdns_shutdown(struct snd_pcm_substream *substream,
-		       struct snd_soc_dai *dai)
-{
-	struct sdw_cdns_dma_data *dma;
-
-	dma = snd_soc_dai_get_dma_data(dai, substream);
-	if (!dma)
-		return;
-
-	snd_soc_dai_set_dma_data(dai, substream, NULL);
-	kfree(dma);
-}
-EXPORT_SYMBOL(sdw_cdns_shutdown);
-
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_DESCRIPTION("Cadence Soundwire Library");

drivers/soundwire/cadence_master.h

@@ -172,8 +172,6 @@ int sdw_cdns_alloc_stream(struct sdw_cdns *cdns,
 void sdw_cdns_config_stream(struct sdw_cdns *cdns, struct sdw_cdns_port *port,
 			    u32 ch, u32 dir, struct sdw_cdns_pdi *pdi);
 
-void sdw_cdns_shutdown(struct snd_pcm_substream *substream,
-		       struct snd_soc_dai *dai);
 int sdw_cdns_pcm_set_stream(struct snd_soc_dai *dai,
 			    void *stream, int direction);
 int sdw_cdns_pdm_set_stream(struct snd_soc_dai *dai,

drivers/soundwire/intel.c

@@ -661,6 +661,19 @@ intel_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 	return ret;
 }
 
+static void intel_shutdown(struct snd_pcm_substream *substream,
+			   struct snd_soc_dai *dai)
+{
+	struct sdw_cdns_dma_data *dma;
+
+	dma = snd_soc_dai_get_dma_data(dai, substream);
+	if (!dma)
+		return;
+
+	snd_soc_dai_set_dma_data(dai, substream, NULL);
+	kfree(dma);
+}
+
 static int intel_pcm_set_sdw_stream(struct snd_soc_dai *dai,
 				    void *stream, int direction)
 {
@@ -676,14 +689,14 @@ static int intel_pdm_set_sdw_stream(struct snd_soc_dai *dai,
 static const struct snd_soc_dai_ops intel_pcm_dai_ops = {
 	.hw_params = intel_hw_params,
 	.hw_free = intel_hw_free,
-	.shutdown = sdw_cdns_shutdown,
+	.shutdown = intel_shutdown,
 	.set_sdw_stream = intel_pcm_set_sdw_stream,
 };
 
 static const struct snd_soc_dai_ops intel_pdm_dai_ops = {
 	.hw_params = intel_hw_params,
 	.hw_free = intel_hw_free,
-	.shutdown = sdw_cdns_shutdown,
+	.shutdown = intel_shutdown,
 	.set_sdw_stream = intel_pdm_set_sdw_stream,
 };